Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: Mr. Scientist on 04/01/2009 17:00:37

Title: Lessons In Physics
Post by: Mr. Scientist on 04/01/2009 17:00:37
I am willing to dedicate my time to provide lessons in physics, but this time is precious to me, so you will need to do something for me. I will need at least five participants who want to learn specific subjects in the laws of physics. I am going to provide AT LEAST ten physical subjects for you to choose.

If you want to participate i need your names now. These will contempary lessons in college level physics, for Kinematics and Quantum Mechanics, including relativity. If you are interested, let me know now.
Title: Lessons In Physics
Post by: Bikerman on 04/01/2009 17:01:45
Well,
I'm always up for learning so count me in :-)
Title: Lessons In Physics
Post by: Mr. Scientist on 04/01/2009 17:36:44
Fellows of this forum, do not worry about the mathematical formulae. I will even show you algebra and the functions behind the mathematical notations.

Thank you bikerman, your position has been noted. Please people, if you would like to know more on subjects, do not let this opportunity go. I am a good teacher.
Title: Lessons In Physics
Post by: DoctorBeaver on 04/01/2009 17:59:40
I would like to but I don't have the time  [:(]
Title: Lessons In Physics
Post by: syhprum on 04/01/2009 19:48:52
I would really like to understand general relativity ,I have no problem with special but when it gets to Tensors and whatnot I get really lost.
Title: Lessons In Physics
Post by: Mr. Scientist on 04/01/2009 20:54:34
General is really hard, but i will add it as a lesson... two more people, and i will add my options for choice.
Title: Lessons In Physics
Post by: Chemistry4me on 04/01/2009 22:59:11
I'm in  [:P] [:P]. Though my knowledge of physics is probably as bad as my maths  [:D] [:I]
Title: Lessons In Physics
Post by: Madidus_Scientia on 04/01/2009 23:12:44
Through what medium will your lessons be? And what is it we have to do for you?

Also, how do we know what you're teaching us is correct/up to date, would you offer some qualifications?
Title: Lessons In Physics
Post by: Chemistry4me on 04/01/2009 23:22:22
Through what medium will your lessons be? And what is it we have to do for you?
Yeah, I forgot to ask, what is it that we have to do for you? [:-\] [:-\]
Title: Lessons In Physics
Post by: Mr. Scientist on 05/01/2009 00:10:22
Madidius

Listen, you take what i say as you take it. But so fr, if this is relevant, i have enough participants, and i ppreciate this. So now, i will present the options for them. So if you disbleieve my work, take it to another scientist.
Title: Lessons In Physics
Post by: Madidus_Scientia on 05/01/2009 00:33:03
I asked a good question and was basically told to piss off, probably not a good quality in a teacher. So i'll pass.
Title: Lessons In Physics
Post by: Mr. Scientist on 05/01/2009 00:34:16
Pass if you want. Anyway, you would get an F for your basic impunity.
Title: Lessons In Physics
Post by: Madidus_Scientia on 05/01/2009 00:36:22
It's called critical thinking, essential in science.
Title: Lessons In Physics
Post by: Mr. Scientist on 05/01/2009 00:39:26
These are your options:

Work and Energy

States of Matter

Newtons Universal Laws (Quite Hard)

Projectiles

Kinetic Energy Theory

The Anatomy of Matter

Gravity

Potnetial Energy

Pressure

General Relativity (Very Hard)

Special Relativity
Title: Lessons In Physics
Post by: Mr. Scientist on 05/01/2009 00:40:05
It's called critical thinking, essential in science.

No, its called ignorance.
Title: Lessons In Physics
Post by: Chemistry4me on 05/01/2009 00:41:48
How many are we meant to pick?
Title: Lessons In Physics
Post by: Chemistry4me on 05/01/2009 00:45:30
How long will these lessons go on for?
Title: Lessons In Physics
Post by: Mr. Scientist on 05/01/2009 00:49:33
About as long as a general lesson in these periods will go, which will be an hour tutoring, but about 30 mins reading. It will be filled with excellent knowlegde on the subjects

:)
Title: Lessons In Physics
Post by: Mr. Scientist on 05/01/2009 00:50:56
How many are we meant to pick?

Just one, but more than five people are allowed to participate, so all of the subjects can be chosen.
Title: Lessons In Physics
Post by: Madidus_Scientia on 05/01/2009 00:51:53
Ignorance would be blindly accepting something somebody says as truth. Which is why I asked the simple question of your qualifications, which you seem to have taken great offence to.
Title: Lessons In Physics
Post by: Mr. Scientist on 05/01/2009 00:59:09
Oh well, ignorance is bliss, as they say.

Title: Lessons In Physics
Post by: yor_on on 05/01/2009 01:19:01
I'll go with Syphrum if there's place.
General relativity as far as it's possible for me to assimilate :)
And gravity, and the anatomy of matter and the kinetic energy theory...

But I can be slow at times.
My mind is like a sieve, at the same time kind of full.

of holes.
( On the other hand, it's air conditioned :)

---------
And yes,and in fact I want them all:)
Work and Energy. States of Matter. Newtons Universal Laws. Special Relativity..
It's like my favorite toystore, but for free:)
Well almost?

Time will tell :)

Title: Lessons In Physics
Post by: Mr. Scientist on 05/01/2009 01:24:13
Right, ok my friend.

You both take share of the cake, but no one else, as i will take lesson of this subject. The other participants must choose other subjects.

Thanks
Title: Lessons In Physics
Post by: Mr. Scientist on 05/01/2009 01:28:10
By the way, the first lesson will commence within the next two days, and will be finished by then.

:)
Title: Lessons In Physics
Post by: yor_on on 05/01/2009 01:33:10
Looking forward to it.
Thanks.
Title: Lessons In Physics
Post by: Chemistry4me on 05/01/2009 01:37:02
I'll go with Work & Energy Mr.S
Title: Lessons In Physics
Post by: Bikerman on 05/01/2009 02:52:48
Ahh...I would have chosen GR but it seems to be off the curriculum. That leaves me with a lot of stuff I've already done to grad level...OK..how about Special Relativity? I could probably use a refresher...
Title: Lessons In Physics
Post by: Mr. Scientist on 05/01/2009 17:18:29
General Relativity - Lesson Installation 1 of 3

One thing Einstein brought to the world, was his amazing conclusion of solving field equations that was describable as a spacetime geometry. The definition of a field equation, is one that describes a physical spacetime field where in the case of Einsteins equations, deal with gravity, which is an all pervading physical field which attracts all other gravitational radiating bodies in the universe.

To begin these lessons, we shall learn about one of Einsteins most famous equations, the Einstein tensor equation. Once we have covered the very basics of his formula, we will then consider the implications of it, through a worded essay.

Einstein’s Tensor Equation

The most important equation in Einstein’s field equations, is the field tensor equation, and is given as:

G_uv=T

Einstein began these equations from a simple equivalence:

G_(αβ)= T_(αβ)

*some times k will not be added, but it is usually more correct to add it

 G_(αβ)=kT_(αβ)

And this alone would explain that geometry was being involved in the description of spacetime. It said that particles are fluctuations of a gravitational field, and are themselves fluctuations of gravity. These fluctuations would bend and curve the space around them, not only caused by a generation of mass, but also the acceleration as it moved through the vacuum.

The right hand side of the equation G_(αβ)=T_(αβ) refers to the energy tensor, related to momentum, that naturally causes the space and time surrounding it to curve in on itself. In fact, in many ways, particles are tiny points that are visualized to be fluctuations that have curved in on themselves, so they can be seen as little creases in the very fabric of spacetime.

The provision of equations, also have about them, a conservation, just like the kind of conservation we may use in Kinetic Energy Equations, for example. We (in terms of physics jargon), that the tensor is covariantly conserved as a quantity in space and time, and we denote this conservation as:

▼βT^(αβ)= ▼βG^(αβ)

▼ Is the derivative, also known as the ‘’covariant derivative’’ is the same as the Einstein Tensor,

▼=G_uv

*Notice the lower and higher indices. They can be representable as traces in Einstein’s equations.

The constant k, is given a value of

K=8πG/c^4

These equations lead to a field equation that is most recognizable in physics education,
 
 G_(αβ)=(K=8πG/c^4)T_(αβ)

And in this one equation, if my memory serves me correctly, involves 10 differentiable equations. So there is quite a lot in this equation. In Einstein’s early resolution of the equations, he decided that it was necessary to believe the universe was static, but under closer observations of cosmological evolution, it became apparent that a cosmological constant divided Einstein’s thoughts to either a contracting universe or an expanding universe. It became obvious that it resolved to an expanding universe.

 G_(αβ)+Λg^(αβ)=(K=8πG/c^4)T_(αβ)

The cosmological constant ‘’Einstein’s biggest blunder’’ (a phrase he would coin that could be debatable), gave rise to an expanding universe, where an energy density was by a magnitude greater of 10^120, which would mean there was more energy predicted in the universe, than what can be observed – it is considered, understandably, one of the largest discrepancies known in physics today.

The Geometry of Spacetime

And so, what we learn from the Einstein Field equation, is that the right hand side of G_(αβ)=T_(αβ), described the geometry of spacetime. In fact, we learn through relativity, that this geometry is not just simply the three-dimensional presence of matter, but is also related to being distortions in spacetime itself. Because it is related to the momentum, it is also said that these distortions are equivalant to acceleration. So in a nutshell, matter is simply the same as the distortions, which is the same as acceleration; these are also the components of another entity; curvature.

The presence of matter entails the geometry of curvature in spacetime, where it will quite literally distort and derrange the spacetime within its vicinity and curve it within its presence. It is for this reason, that in 1919 Arthur Eddington was able to take a photograph of light being bend around the suns gravitational presence. This happens because light has momentum, and also its own gravity (whilst its gravity is very weak), it is still able to be influenced by gravity itself. The gravitational influence of light in the universe is far too weak (in fact, miniscule) to even have an influence in the evolution of the universal gravitational bodies, such as planets, stars to entire galaxies. Light may have had an effect on the gravitational evolution of bodies perhaps very early on in the universes history.

Title: Lessons In Physics
Post by: Mr. Scientist on 05/01/2009 18:42:25
The second installation is coming soon. However, can i note, i have not numerically used General Relativity before, so i cannot inform you on how to do so. I have only studied the work myself.

Now, i must say, bringing in other topics on other subjects in this thread will be very confusing at best, with the amount of theories going to be reviewed. So, i will also start another thread, so there will be two threads dedicated to these subjects.

The other thread will focus on the Special relativistic equations, which i have numerically worked with. I hope will clear some of the possible confusion that coud arise when doing these things.
Title: Lessons In Physics
Post by: yor_on on 05/01/2009 19:01:02
So if I got it right :)
You will create a separate thread for Special relativity.
and us reading your installments here wanting to discuss general relativity.
We will use this thread for that if I got you right.

So my first question then:)

You wrote "In fact, we learn through relativity, that this geometry is not just simply the three-dimensional presence of matter, but is also related to being distortions in spacetime itself. Because it is related to the momentum, it is also said that these distortions are equivalant to acceleration."
How do you see 'distortions in spacetime'?
Are you referring to mass influence on spacetime, or are you seeing it as something 'happening' in, for example, outer space to space itself by itself?
Not related to any 'normal' matter formations influence?

That is , do you see it as due to vacuums inbuilt energy?
Title: Lessons In Physics
Post by: Mr. Scientist on 05/01/2009 19:44:56
I see these distortions like this:

Imagine a very beautiful woman on the beach, in the great sun belting on her sunkist face... she decides to have a presence made on the sand with her finger. She places her finger in the sand, and the sand reacts to her fingers presence. The sand will bend as she presses it into the harsh, corse silcone bits, and their distorted perimeter, is in fact the presence of her fineger which is made of matter istelf. This matter then, has caused a geometry in the sand, and this is analogous to the presence of matter in space. It distorts and derranges the sand around it, so the presence of matter has caused these distortions, and has caused the dent of geometry itself. The ability of matter to do this, is certainly also due to the energy is has, so yes.

Title: Lessons In Physics
Post by: yor_on on 05/01/2009 22:33:57
Ok, more or less like I see it then:)
Although I'm starting to think that all space is matter:)
It's like a symmetry, you will get space if having matter.
241 sort of.

Which seems to fit with gravity being like some sort of 'field'.
But if that was true one could presume 'regions', far enough away so to speak, without a vacuum.
Even when allowing for a uniform inflation?
Not that I can 'imagine' it but it could be a possibility.

But then one might be expecting areas without 'light' coming towards us, if now light have to follow spacetime.

Spacetime won't let you see those other 'areas' as it will form itself into an 'enclosure, what is called a 'four vector four-dimensional real vector space, called Minkowski space' in special relativity, or a four-momentum (mass-energy and linear momentum) in general relativity'.
http://en.wikipedia.org/wiki/Four-vector


So I guess that thought was plain stupid.
Ah well, let's see where the journey takes me.
Carry on Mr S. ::))
Title: Lessons In Physics
Post by: Bikerman on 05/01/2009 22:38:54
Errr...hang on a mo..
The analogy with sand is surely misleading. Sand is 'stuff'. The analogy indicates that spacetime is therefore 'stuff'. This leaves open the whole issue of the aether which Michelson-Morley was supposed to have buried.
Einstein himself said that spacetime could be regarded as an aether but ONLY a non-particulate aether in which there was no time dependent 'motion'. Thus the analogy seems to me to be misplaced....
Title: Lessons In Physics
Post by: chris on 05/01/2009 23:23:09
Where will these "lessons" be conducted?

(I am thinking that our Second Life auditorium might be a good venue...)

Chris
Title: Lessons In Physics
Post by: yor_on on 05/01/2009 23:28:22
Bikerman, you're right:)

Still, if vacuum is something containing energy (looking at BEC and radiation).
And if so called 'stopped light is something truly 'vanishing' inside that BEC but still somehow 'imprinted' on the BEC.
So that it come back as moving light again, when one stops the lasers interference (as I've understood it)?

It doesn't make a aether, but it seems to be something else than a 'nothing', do you agree.
To me it seems more like having some hidden dimensional field giving us both matter and what we call space?

And now its definitely time for me to go to bed, huh:)


Title: Lessons In Physics
Post by: Soul Surfer on 05/01/2009 23:39:44
Chris I don't think these "lessons" a good idea.  MR Scientist just copies and pastes stuff from other science websites and sometimes adds bits himself and these are not always accurate.  The stuff he has just posted is not properly understandable unless you already have a good grasp of tensor calculus in the particular notation used(this is the really difficult bit) and hence is not really imparting useful knowledge to anyone.
Title: Lessons In Physics
Post by: Bikerman on 06/01/2009 01:42:28
Chris I don't think these "lessons" a good idea.  MR Scientist just copies and pastes stuff from other science websites and sometimes adds bits himself and these are not always accurate.  The stuff he has just posted is not properly understandable unless you already have a good grasp of tensor calculus in the particular notation used(this is the really difficult bit) and hence is not really imparting useful knowledge to anyone.
I have to reluctantly agree. My maths has always been my weak point in science (a MAJOR drawback) though it is something I'm currently addressing in my spare time (mainly by working through 'The Road To Reality - Penrose'. I'm still currently working my way through Hamiltonians/Lagrangians :-)
Title: Lessons In Physics
Post by: Mr. Scientist on 06/01/2009 02:50:44
Oh no, when apprecication is not taken, is when one must give up.

I give up.
Title: Lessons In Physics
Post by: Mr. Scientist on 06/01/2009 02:52:55
In fact today, i learn i have no place here, if one is not willing to ask a question, without prejudice, and without cause or just making of me to be fool of the science or ''remedial'' explanations i bring to my audiance.

It must now, seem clear that the one who came to teach, is nothing but a fool.


edited: You lot jumped on some wagon without explanation or guidance. Does one like me who has a lot to show, may have more luck with talking to his big toe?
Title: Lessons In Physics
Post by: Madidus_Scientia on 06/01/2009 06:21:48
Quote
You lot jumped on some wagon without explanation or guidance. Does one like me who has a lot to show, may have more luck with talking to his big toe?

Did you not expect the people of a science forum to have critical thinking skills? Twice in this thread alone, you have taken great offence to people questioning what you've said. If you say something questionable, you will be questioned on it. WELCOME TO SCIENCE
Title: Lessons In Physics
Post by: Bikerman on 06/01/2009 10:37:01
I'm sorry you feel like that Mr Scientist, but speaking as one who has devoted a large part of his life to teaching, I can tell you that you had better get used to being questioned if you are serious about teaching.

I did not insult you or in any way 'have a go' - I simply agreed that your explanation of GR was formulaic and would only be of use to those with an existing grasp of tensor mathematics.
I also pointed out that your 'sand' analogy was flawed and very likely to confuse the issue by reintroducing a notion that modern physics has dispensed with.
If you have a problem with either of those observations then I would suggest that you really need to reconsider teaching as an option, since both points were made reasonably, civilly and in the spirit of constructive criticism.

Anyway - I will leave you to think about it - I'm off for an interview for a lecturing post :-)
Title: Lessons In Physics
Post by: yor_on on 06/01/2009 11:11:47
Well Mr S.

I still think you should present your installments :)

Bikerman is a cool dude :) as they say in the States.
And he's not really out to 'brand' anything or anyone.

If you have, what you are satisfied with, explaining spacetime, do post it.
Differ between what you know is "main frame science" and 'other views'.
Just as you did before.

There is no stigma to not 'knowing it all', not even Newton, nor Einstein, believed that they had it all.


-----

(Although Newton was kind of 'prickly' at times, wasn't he?:)
Title: Lessons In Physics
Post by: Mr. Scientist on 06/01/2009 12:23:49
He's not the problem.

The one who is saying these lessons are a bad idea, does not have two brain cells to rub together. It is true, i have taken my work from previous sites, but it is still my work. I would have understood his lame comments if i had pleigarised the work, or copied it without permisssion. I only brought the work here, because i have had comments in the past that it helped them understand physics, or it was written well; but i will not see how taking my work for those purposes is by any means, not good, as Soul Surfer said. What's worse, is that i really did honestly take my time out to write this stuff, and that should be appreciated. Criticism is fine, as i once said. But being ignorant towrds someone without proof is bad in itself.
Title: Lessons In Physics
Post by: Madidus_Scientia on 06/01/2009 13:20:51
Quote
Criticism is fine, as i once said. But being ignorant towrds someone without proof is bad in itself.

The people who have criticised you have shown the opposite of ignorance, they have exercised critical thinking skills and have questioned your logic. If they were ignorant, they would have blindly taken what you said to be truth. You are the one being ignorant toward those who question you.
Title: Lessons In Physics
Post by: syhprum on 06/01/2009 14:50:49
After reading the excellent article on how the negative mass of the gravitational field was derived that lightarrow direted us to
http://www.negative-mass.com/
I was somewhat disappointed by Mr Scientist efforts that really dropped us into the deep end of a pool of tensors explaining little on the way.
Title: Lessons In Physics
Post by: Mr. Scientist on 06/01/2009 16:23:49
Quote
Criticism is fine, as i once said. But being ignorant towrds someone without proof is bad in itself.

The people who have criticised you have shown the opposite of ignorance, they have exercised critical thinking skills and have questioned your logic. If they were ignorant, they would have blindly taken what you said to be truth. You are the one being ignorant toward those who question you.


well, that's interesting, because I see it completely differently. As i said, there is criticism, and then there is just ignorance, and in this case, the ignorance was directed to impune my work, and me.

I can take criticism, but not if it has behind it bad intentions.
Title: Lessons In Physics
Post by: Mr. Scientist on 06/01/2009 16:28:37
After reading the excellent article on how the negative mass of the gravitational field was derived that lightarrow direted us to
http://www.negative-mass.com/
I was somewhat disappointed by Mr Scientist efforts that really dropped us into the deep end of a pool of tensors explaining little on the way.

I did warn the reader it would be hard. Whilst it might have felt i let you jump into the deep end, i did warn the reader of these facts first-hand.
Title: Lessons In Physics
Post by: Seany on 06/01/2009 16:38:15
*Lifts hand up like a nice child to ask a question* [;D]
Title: Lessons In Physics
Post by: Mr. Scientist on 06/01/2009 16:41:08
please ask.
Title: Lessons In Physics
Post by: Seany on 06/01/2009 16:47:11
Can we start the lessons again?
I am sure people will be more careful this time.
And we appreciate your time which you've taken to write this!

And please stay with us here! [:)]
Title: Lessons In Physics
Post by: DoctorBeaver on 06/01/2009 17:11:52
*Lifts hand up like a nice child to ask a question* [;D]

How polite you Koreans are! We Brits would just say "Oi, I wanna ask ya a question Moosh" [;D]
Title: Lessons In Physics
Post by: Mr. Scientist on 06/01/2009 17:12:20
How can i say ''no'' to that?
Title: Lessons In Physics
Post by: Seany on 06/01/2009 17:15:20
How can i say ''no'' to that?

Thank you for being so considerate [;)]
Title: Lessons In Physics
Post by: Seany on 06/01/2009 17:15:46
*Lifts hand up like a nice child to ask a question* [;D]

How polite you Koreans are! We Brits would just say "Oi, I wanna ask ya a question Moosh" [;D]

How nice of you to still remember my nationality [;D]
Good memory!
Title: Lessons In Physics
Post by: Madidus_Scientia on 06/01/2009 17:23:25
Quote
Criticism is fine, as i once said. But being ignorant towrds someone without proof is bad in itself.

The people who have criticised you have shown the opposite of ignorance, they have exercised critical thinking skills and have questioned your logic. If they were ignorant, they would have blindly taken what you said to be truth. You are the one being ignorant toward those who question you.


well, that's interesting, because I see it completely differently. As i said, there is criticism, and then there is just ignorance, and in this case, the ignorance was directed to impune my work, and me.

I can take criticism, but not if it has behind it bad intentions.

Where are the bad intentions?
Title: Lessons In Physics
Post by: Mr. Scientist on 06/01/2009 17:31:46
Where are the good intentions in saying there is something potentially wrong in my taking work i have already written for the good of people learning?

Just drop it.
Title: Lessons In Physics
Post by: DoctorBeaver on 06/01/2009 17:45:51
*Lifts hand up like a nice child to ask a question* [;D]

How polite you Koreans are! We Brits would just say "Oi, I wanna ask ya a question Moosh" [;D]

How nice of you to still remember my nationality [;D]
Good memory!

I've made a Korea out of remembering things  [;D]
Title: Lessons In Physics
Post by: yor_on on 06/01/2009 17:58:45
Mr S.
Relax, but prepare for questions and opinions:)
But that is as it should be...

After all, we all want it to be as 'right' as possible.
And nobody here is evil..

Ah, with the possible exception of that person in red over there, perhaps?
You know, the one with those two red pointy things.
what are they called?
Horns?

:)

Nah, relax and enjoy.
Some may expect a more stringent 'language' when describing an idea.

But when done as I do :)
They fast realize that the best they ever will get out of me is a..
'I know Noothing, noo thiing I say'.

Yep, brothers in arms, that's us, Manuel and me.
Title: Lessons In Physics
Post by: Mr. Scientist on 06/01/2009 18:03:34
Yes, i will relax. I also don't mind questions, but i don't want my teaching method questioned, because afterall, i don't see anyone else jumping to the opportunity to take time out of their day to go through, and to be honest, a very difficult area of science.
Title: Lessons In Physics
Post by: yor_on on 06/01/2009 19:28:00
But they do Mr. S :)

In a 'laid back' manner perhaps.
But one of the main reasons, beyond the civility and knowledge shown around here, I enjoy this place is just that.
That here you will find people taking that 'extra step' to try to explain their thoughts in a comprehensible manner.
Lightarrow is my most recent example of a guy showing extraordinary patience with me, guiding me in how physics define and differ between different concepts.
What you are planning to do is the same :) but as a more concise 'treatise' relating to defined areas.

But in the end, I believe, it all comes down to our need to learn.

The more you use that mind the more you will find that you don't know anything.
At least that is how it feels for me :)
Then , on the other tentacle, in my case it might be all too true::))

When you find that you suddenly understand something, that you had problems coming to grip with before.
That's the best kick there are.

Yep, Knowledge should be free, and here I think it is.
(Although it may cost one some 'sweat' coming to 'terms' with it, ah, that new knowledge i meant:)
Title: Lessons In Physics
Post by: Mr. Scientist on 06/01/2009 19:32:58
Forgive me, i meant lessons, not participatory means, which people here do take their time out of to do.
Title: Lessons In Physics
Post by: Soul Surfer on 06/01/2009 19:44:15
I have no criticism of good explanations containing accurate examples at an understandable level for the questioner and work hard to do this when asked.  Can I point out though that on both of the two sites where I found identical postings to what Mr Scientist posted here containing identical errors the (differently named) posters had been banned from the site, presumably for posting poor quality scientific information.  Also I have been active as a moderator on open chat sites of many different types ever since the web was invented and Mr Scientist's aggression, fear of criticism and pleading as a victim are totally characteristic of the behaviour of that loathsome species the internet Troll.

Mr Scientist there is still time to mend your ways with this site if you concentrate on polite and accurate scientific discussion you might even learn some science.  But for someone who apparently does not understand (or pretends not to understand) how a filament light bulb works.  (see      )  offering to teach others seems a bit unwise.

Mind you it is amazing the poor quality teaching that exists in some schools these days because it was only a couple of years ago that we had a young person on this site who had been told that the electrons round the nucleus of atoms atoms were held together by gravity like planetary systems.  Fortunately I think we did manage to get a message back to the teacher.
Title: Lessons In Physics
Post by: Mr. Scientist on 06/01/2009 19:49:34
You base this on a bulb?

This is not about my knowledge on the workings of a bulb. Check my more recent posts that are short lesson installations. If you find error with me, i will admit a mistake, but i will not be a ''victim'' as you put it to shallow attacks on my teaching method, never mind its truthfullness. If i was teaching people how a bulb worked, i would understand your analogy, but i am not teaching that.

Title: Lessons In Physics
Post by: Soul Surfer on 06/01/2009 20:03:01
can you please explain to me what you mean by the statement

"Take a dice. A dice has about 10^80 grams of energy!"

 
Title: Lessons In Physics
Post by: syhprum on 06/01/2009 20:37:22
Soulsurfer

When I was at school in 1941 not only were we taught that Electron orbited the nucleus like little planets but that the nucleus consisted of Protons and Electrons.
Perhaps Neutrons were a military secret in 1941 !
Title: Lessons In Physics
Post by: Soul Surfer on 06/01/2009 20:48:42
Early  theories of atomic structure did not recognise neutrons.  These were first described as separate particles by Chadwick I think (must look this up)

The way it was described was like this.   It was known that protons congregated in the centre of the atom but it was not known how they bound together.  It was known that a certain number of electrons were in shells around the nucleus and these defined the chemical properties of the atom.  The atomic weight of elements showed that there was an excess of heavy particles over the atomic number in higher atomic weight nuclei so it was assumed that they were protons and electrons bound together in a different way to hold the nucleus together against the powerful repulsive forces of the positively charged protons.  these electrons were described for a few years as nuclear electrons.

OK this was eventually shown to be wrong but it was the best Idea that they had at the time.


Neutrons were first and observed made by bombarding a beryllium target with alpha particles(helium nuclei)
 from polonium  first observed by the curies but researched and explained by chadwick

"Chadwick immediately repeated the experiments at the Cavendish Laboratory in Cambridge, England. He not only bombarded the hydrogen atoms in paraffin with the beryllium emissions, but also used helium, nitrogen, and other elements as targets. By comparing the energies of recoiling charged particles from different targets, he proved that the beryllium emissions contained a neutral component with a mass approximately equal to that of the proton. He called it the neutron in a paper published in the February 17, 1932, issue of Nature. In 1935, Sir James Chadwick received the Nobel Prize in physics for this work"

extract from http://www.chemcases.com/nuclear/nc-01.htm

So your teachers were about ten years behind  (about typical I would think)  In the later forties and early 50s when I was at junior school I read about nuclear structure involving neutrons and had diagrams of a simple two sub critical mass fission bomb and a nuclear reactor in books I could read from the library.
Title: Lessons In Physics
Post by: Mr. Scientist on 06/01/2009 21:36:00
can you please explain to me what you mean by the statement

"Take a dice. A dice has about 10^80 grams of energy!"

 

What don't you understand about it?
Title: Lessons In Physics
Post by: DoctorBeaver on 06/01/2009 22:03:06
When I was a lecturer I listened to all criticisms of my teaching methods. I changed my teaching style a couple of times as a result and when my first batch of students took their degrees most of them thanked me. Incidentally, they got a very high pass rate with most getting a 2.2 or better.

If someone is not prepared to listen to criticism it means they think they are perfect at what they do. I don't believe anyone is.
Title: Lessons In Physics
Post by: Bikerman on 06/01/2009 22:34:47
Doc is correct. I've been a lecturer and teacher for many years. If you can't take criticism of your teaching method then don't teach...it is really as simple as that.
Title: Lessons In Physics
Post by: Mr. Scientist on 06/01/2009 22:56:51
I simply won't answer the criticism. Hopefully people are wise enough to decide opinions of their own without anyones influence.
Title: Lessons In Physics
Post by: Chemistry4me on 06/01/2009 22:58:40
Does that mean you're not leaving?  [:)] [???]
Title: Lessons In Physics
Post by: Mr. Scientist on 06/01/2009 23:05:26
Someone asked very nicely, so i said i would.
Title: Lessons In Physics
Post by: Soul Surfer on 07/01/2009 00:35:57
"Take a dice. A dice has about 10^80 grams of energy!"


Everything is wrong with it! the statement is completely obscure and meanigless in scientific terms

Firstly energy is not measured in grams

secondly 10^80 is a very big number indeed

Finally precisely how are they related to a dice  (strictly the term for one is a die dice is a plural) but how big and heavy is it? it is not something that has a standard size,

As you claim to have written this statement you must be able to explain it in rather more extended and unambiguous terms.
Title: Lessons In Physics
Post by: Madidus_Scientia on 07/01/2009 06:15:28
Quote
secondly 10^80 is a very big number indeed

Yeah even if he meant joules not grams its still wrong, if you estimate a die to be about 8 grams it would have 7.19 * 10^14 joules of energy
Title: Lessons In Physics
Post by: Andrew K Fletcher on 07/01/2009 08:49:53
Now that's painful
Quote

I've made a Korea out of remembering things  [;D]
Title: Lessons In Physics
Post by: DoctorBeaver on 07/01/2009 09:52:54
Hopefully people are wise enough to decide opinions of their own without anyones influence.

Absolutely; and they have the right to make their opinions public.
Title: Lessons In Physics
Post by: DoctorBeaver on 07/01/2009 09:53:38
Now that's painful
Quote

I've made a Korea out of remembering things  [;D]

Yes, I remembered. I didn't have to Czech.
Title: Lessons In Physics
Post by: dentstudent on 07/01/2009 09:55:07
Now that's painful
Quote

I've made a Korea out of remembering things  [;D]

Yes, I remembered. I didn't have to Czech.

Have you quite Finnished?
Title: Lessons In Physics
Post by: Chemistry4me on 07/01/2009 09:59:46
Now that's painful
Quote

I've made a Korea out of remembering things  [;D]

Yes, I remembered. I didn't have to Czech.

Have you quite Finnished?

Who's Hungary for some Turkey?  [;D]
Title: Lessons In Physics
Post by: Chemistry4me on 07/01/2009 10:04:13
Or an Afghan cookie? 
Title: Lessons In Physics
Post by: Madidus_Scientia on 07/01/2009 10:19:52
Maybe some kiwi.
Title: Lessons In Physics
Post by: Chemistry4me on 07/01/2009 10:31:48
Alright, take a Chile pill  [:D] [;D]
Title: Lessons In Physics
Post by: dentstudent on 07/01/2009 10:32:54
Don't go Russian in though.
Title: Lessons In Physics
Post by: dentstudent on 07/01/2009 10:34:47
I'm Ghana assess our United States and Peru-se the outcome.
Title: Lessons In Physics
Post by: Chemistry4me on 07/01/2009 10:35:37
 [:D] [:D] [:D] [:D] [:D] [:D]
Title: Lessons In Physics
Post by: Chemistry4me on 07/01/2009 10:37:21
Don't go Russian in though.
But do go Waleing in.
Title: Lessons In Physics
Post by: Chemistry4me on 07/01/2009 10:43:58
Ken-ya imagine that?
Title: Lessons In Physics
Post by: Chemistry4me on 07/01/2009 11:31:47
Come on! I-ran all this way and nobody has posted anything?  [:D]
Title: Lessons In Physics
Post by: Andrew K Fletcher on 07/01/2009 13:00:58
Thought this was a lesson in physics not geography?
Title: Lessons In Physics
Post by: Madidus_Scientia on 07/01/2009 13:15:13
Come on! I-ran all this way and nobody has posted anything?  [:D]

You must be hot. I'll get you a Cuba ice.
Title: Lessons In Physics
Post by: Seany on 07/01/2009 14:11:56
Someone asked very nicely, so i said i would.


YAYYY! Was this me? [;D]
Title: Lessons In Physics
Post by: science_guy on 07/01/2009 16:30:48
there's norway you could possibly come up with more country puns...   [:-\] [:o)] [:o)]
Title: Lessons In Physics
Post by: Madidus_Scientia on 07/01/2009 17:34:05
On the subject of physics lessons, something you might not know is some universities post certain lectures on youtube, here's a playlist I recommend;

http://www.youtube.com/view_play_list?p=095393D5B42B2266

If learning science is the kind of thing that glues you to your seat then these will provide many hours of seat-glue. Get 'em india!
Title: Lessons In Physics
Post by: Andrew K Fletcher on 07/01/2009 18:22:03
Thanks for the list, will have a look.
On the subject of physics lessons, something you might not know is some universities post certain lectures on youtube, here's a playlist I recommend;

http://www.youtube.com/view_play_list?p=095393D5B42B2266

If learning science is the kind of thing that glues you to your seat then these will provide many hours of seat-glue. Get 'em india!
Title: Lessons In Physics
Post by: Chemistry4me on 07/01/2009 23:39:08
there's norway you could possibly come up with more country puns...   [:-\] [:o)] [:o)]

Are U-kraine-zy of course I can! Aren't U-ganda try?
Title: Lessons In Physics
Post by: lightarrow on 08/01/2009 12:45:19
Walter Lewin's FREE VIDEO lessons of Physics at MIT are the best I've found till now. Unfortunately for me, it's stuff I've already studied at uni. If he taught quantum physics, or general relativity or something I haven't studied, I would immediately watch them.
With google, look for all his lessons (from mechanics to thermodynamics, optics,ecc.)
Title: Lessons In Physics
Post by: yor_on on 08/01/2009 15:25:46
Ahh Lightarrow:)
He's good.

He informed me who it was who started all that 'stupidity' of electricity's wandering from plus to minus.
I found out about it when I was young, and it gave me a hard time accepting the way electricity and electrical drawings were depicted .

Benjamin was his first name right? Sadly i missed his last.
But, I believe i have enough on him now to inform the proper authorities.

He will be apprehended and brought to justice..
And that's a promise...
Title: Lessons In Physics
Post by: Mr. Scientist on 08/01/2009 15:59:27
Alright, take a Chile pill  [:D] [;D]

Heehee,

This one had me in tears for some reason lol
Title: Lessons In Physics
Post by: DoctorBeaver on 08/01/2009 17:15:57
Thought this was a lesson in physics not geography?

Indeed. So, let's talk about relecting light through 90o - a right-Angola.  [;D]
Title: Lessons In Physics
Post by: syhprum on 08/01/2009 18:00:35
I note that the last 20 or posts have been devoted to humour, while a little lightening of heavy subjects is not out of place I cannot but feel a little miffed that this goes on while my quite serious discussion for the need for better spelling is vanquished to the outer wastes of 'Geek Speak'.
Title: Lessons In Physics
Post by: DoctorBeaver on 08/01/2009 18:34:17
I note that the last 20 or posts have been devoted to humour, while a little lightening of heavy subjects is not out of place I cannot but feel a little miffed that this goes on while my quite serious discussion for the need for better spelling is vanquished to the outer wastes of 'Geek Speak'.

Sorry  [:I]
Title: Lessons In Physics
Post by: Mr. Scientist on 08/01/2009 19:32:45
"Take a dice. A dice has about 10^80 grams of energy!"


Everything is wrong with it! the statement is completely obscure and meanigless in scientific terms

Firstly energy is not measured in grams

secondly 10^80 is a very big number indeed

Finally precisely how are they related to a dice  (strictly the term for one is a die dice is a plural) but how big and heavy is it? it is not something that has a standard size,

As you claim to have written this statement you must be able to explain it in rather more extended and unambiguous terms.

Energy can be measured in grams: Its not unheard of. I have within the last couple weeks read something similar, where Dr Wolf examines how much energy is stored in small systems, and he also measured it in grams. It is related to the amount of matter that is stored in comparrison to the energy that can be extracted in question.
Title: Lessons In Physics
Post by: lyner on 08/01/2009 19:50:50
You'd need to define you terms.
If the dice were 80g, then the energy equivalent would be mc2.
Which would be about 0.08 X 9e16, or 7.2e15. Where does e80 come from?
Title: Lessons In Physics
Post by: Mr. Scientist on 08/01/2009 19:54:35
No no, these grams measure the energy.
Title: Lessons In Physics
Post by: Mr. Scientist on 08/01/2009 20:01:42
In fact, i am probably just confusing everyone this way. I apologize for this, because i promised i would not intentionally be confusing, so, instead, i will carefully measure the matter if a dice, and then convert it into energy mathematically with the usual units.
Title: Lessons In Physics
Post by: lyner on 08/01/2009 21:25:01
The use of grams is confusing in itself because we normally use SI units.
Title: Lessons In Physics
Post by: Mr. Scientist on 08/01/2009 22:09:35
I know. I am yet to get my scientific scales out and then mathematically transpose this into the energy. Give me time, and i will release a new configuration, with units you will recognize, as well as everyone who use them notationally everyday. I do realize, i made a mistake believing this would have been appropriate.
Title: Lessons In Physics
Post by: lyner on 08/01/2009 22:16:37
It might be a good idea to rehearse your ideas in private and get them right before you expose them to the rest of the world.
Title: Lessons In Physics
Post by: Mr. Scientist on 08/01/2009 22:19:58
That could be a wiseful idea.

Are you a moderator here?
Title: Lessons In Physics
Post by: lyner on 08/01/2009 22:34:00
Yep.
Title: Lessons In Physics
Post by: Mr. Scientist on 08/01/2009 22:44:55
Then i will post you my work on Cartesian Coordinates, as that will be my next chapter, expalaining time as invariant under space.

Is that ok?
Title: Lessons In Physics
Post by: lyner on 08/01/2009 22:49:26
And you expect me to wade through yards and yards of stuff which I find boring? Most technical authors PAY someone to do that sort of thing.
Title: Lessons In Physics
Post by: Mr. Scientist on 08/01/2009 22:51:13
Well then, don't let me bore you.
Title: Lessons In Physics
Post by: Mr. Scientist on 08/01/2009 22:52:13
Secondly, don't suggest something, unless you are willing to do your bit. As in getting someone here would be a moderator, to moderate.

In fact, don't do your job at all, since that is what you are implying.
Title: Lessons In Physics
Post by: Chemistry4me on 08/01/2009 22:55:04
Thought this was a lesson in physics not geography?

Indeed. So, let's talk about relecting light through 90o - a right-Angola.  [;D]

O-man! You're losing it Doc  [:D]. Maybe you should look in the atlas, there might be some good ideas In-dia ! [:D]
Title: Lessons In Physics
Post by: lyner on 08/01/2009 22:58:08
Moderators are not there to do other people's research for them. We are there to deal with spam and other sources of wasted time. Also to remind people about how the Forum expects them to behave.
Title: Lessons In Physics
Post by: lyner on 08/01/2009 22:59:37
C4me
That's Africkin good joke.
Title: Lessons In Physics
Post by: Mr. Scientist on 08/01/2009 23:06:52
lol
Title: Lessons In Physics
Post by: Chemistry4me on 08/01/2009 23:55:19
Thank you sophiecentaur, I must say that my brain has never Ben-in such good shape! [:D]
Title: Lessons In Physics
Post by: Bikerman on 09/01/2009 00:23:58
Without wishing to distract this playful interlude I wish to make an observation:
Mr Scientist - I appreciate all offers to teach, and as a teacher myself I understand the commitment and effort needed in that role. I think your offer was well meant, but I would ask you to reconsider, given what you have posted here. It is apparent to me that you really haven't got a scheme of work, let alone detailed lesson plans. These are essential. Nor do I think you actually have a proper grasp of the subject - a major drawback. Now, I completely understand that a teacher is often his/her own best pupil and teaching something is the surest way to test that you actually understand it yourself. That said, I think it is unwise to offer to teach quite complex physics unless you have a real understanding of the basics. I'm not at all sure that you do.
Don't take that as an insult...take it as a constructive suggestion.
Title: Lessons In Physics
Post by: Soul Surfer on 09/01/2009 09:44:47
Far worse than that Bikerman  The stuff he is purporting to "teach" is totally riddled with inconsistencies and errors that are more likely to confuse people and give them the wrong idea.

I believe that he has malevolent intents even though he whinges victimisation.  These are the typical actions of an internet chat page troll. I have seen enough of them to know one when I see it.
Title: Lessons In Physics
Post by: yor_on on 10/01/2009 13:16:57
Soulsurfer, even though I think (as you:) that Mr S. might have had an agenda of his own when he was presenting his material.
I do not think he was having 'malevolent intentions', rather that he was building up to a 'idea' of his own.
Using what he himself have learnt and trying to give us what he saw as the 'proper' references for it.

But physics and especcially mathematics is a very stringent subject, so using it one has to be prepared for 'flack'.

He might come across as a somewhat 'straightlaced' person?
And as having taken on somewhat more than he could 'chew' here:)

But then again:)

"Yes, there were times, I'm sure you knew
When I bit off more than I could chew.
But through it all, when there was doubt,
I ate it up and spit it out.
I faced it all and I stood tall;
And did it my way."

As we all have to do at times.
Title: Lessons In Physics
Post by: Soul Surfer on 11/01/2009 12:32:13
As far as I can see his only intent is to gain some sort of fame and notoeriety by arousing interest and argument from his activities irrespective of their scientific accuracy.  This has nothing to do with most of the contributors here who wish to learn from and help others to learn some genuine and accurate science. OK we also allow people to expound some innovative and wild ideas in the right areas but Mr Scientist is not trying to do this. He appears to be concentrating on main stream science and it has been clearly demonstrated several times he does not understand the stuff he is posting and it is also often copied from banned contributors on other science chat pages.
Title: Lessons In Physics
Post by: Bikerman on 13/01/2009 00:33:40
Well, I try to take the most charitable line. As a moderator on other forums, I find it very easy to quickly categorise people as trolls (I see plenty of such behaviour). To avoid becoming over-cynical, therefore, I try to imagine the best, given that people often have problems posting articulately (in the case of Mr.S I am guessing that English might be a second language).
I have acted as 'mentor' to enough trainee teachers over the years to know that some people with the best of intentions should really not be let loose in a classroom situation. I was, perhaps over-charitably, assuming that Mr.S falls into this category rather than trying to deliberately mislead.....
Title: Lessons In Physics
Post by: Chemistry4me on 13/01/2009 00:39:52
I think Mr.S has already decided To-go! *I can't believe nobody has thought of that*
Title: Lessons In Physics
Post by: LeeE on 13/01/2009 19:24:45
Now that the silly stuff has stopped, Ireland in this thread and make my contribution.
Title: Lessons In Physics
Post by: Chemistry4me on 14/01/2009 00:04:53
Yeah, lets think of Sa-moa country puns!
Title: Lessons In Physics
Post by: science_guy on 15/01/2009 17:29:10
should we really just russian and do that on sombody else's topic?
Title: Lessons In Physics
Post by: Chemistry4me on 16/01/2009 01:59:47
should we really just russian and do that on sombody else's topic?
I'm afraid Russian has already been taken. Trust you to Cam-e-roon the fun science_guy!  [;D]
Title: Lessons In Physics
Post by: Andrew K Fletcher on 25/01/2009 12:50:09
Can we talk Turkey? We could at least Thai to look interested.
Title: Lessons In Physics
Post by: Chemistry4me on 25/01/2009 22:18:53
Sorry, Turkey has already been taken (eaten). We could Thai and look interested but it Is-rael hard right now.
Title: Lessons In Physics
Post by: LeeE on 26/01/2009 12:53:31
Can someone please ex-spain what's going on here?
Title: Lessons In Physics
Post by: Andrew K Fletcher on 26/01/2009 13:45:50
I just don't Belize it! Maybe Con-go teach elsewhere?
Title: Lessons In Physics
Post by: ScientificBoysClub on 26/01/2009 13:54:49
These are your options:

Work and Energy

States of Matter

Newtons Universal Laws (Quite Hard)

Projectiles

Kinetic Energy Theory

The Anatomy of Matter

Gravity

Potnetial Energy

Pressure

General Relativity (Very Hard)

Special Relativity

Mr. Scientist ,

Where can I find your teachings cos I am just a under graduate student in Math and Physics...
I need help from u ? so, is it youtube lectures ? or audio lectures ?  is it free ??
well just like u think ... I thought about it starting video lectures right from basics!! well Now I am not free now .. but @ mid march I will be cos I have exams !!!

And I am also going to use computer graphics for video explanation !!
Title: Lessons In Physics
Post by: Chemistry4me on 26/01/2009 21:52:17
Mr. Scientist has gone... for good.
Title: Lessons In Physics
Post by: Chemistry4me on 26/01/2009 21:53:59
On a more serious note:

I just don't Belize it! Maybe Con-go teach elsewhere?
I'm Ch-ina think of some more!
Title: Lessons In Physics
Post by: Mr. Scientist on 09/12/2009 17:42:40
OMG! Forgot all about this thread... Does anyone still wish to participate?

The first lesson would be on linear vector calculus... don't be afraid by its name though! :)
Title: Lessons In Physics
Post by: Mr. Scientist on 09/12/2009 17:43:57
Mr. Scientist has gone... for good.

How [presumptious] of you :)
Title: Lessons In Physics
Post by: LeeE on 09/12/2009 20:34:02
Oh no - not only has he come back, but he's remembered this bloody thread as well [>:(]
Title: Lessons In Physics
Post by: Chemistry4me on 09/12/2009 23:30:06
(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fbestsmileys.com%2Finnocent%2F2.gif&hash=1611465ad40fd1aa2b1c268dc38624fb) Are we back onto the country puns

*Sees Mr. Scientist*
Oh, hi boss, we were just um... (https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fbestsmileys.com%2Foffice1%2F24.gif&hash=880bc7e1d0b39017de2c4d1c7f1e11f0)
Title: Lessons In Physics
Post by: Mr. Scientist on 10/12/2009 04:07:04
(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fbestsmileys.com%2Finnocent%2F2.gif&hash=1611465ad40fd1aa2b1c268dc38624fb) Are we back onto the country puns

*Sees Mr. Scientist*
Oh, hi boss, we were just um... (https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fbestsmileys.com%2Foffice1%2F24.gif&hash=880bc7e1d0b39017de2c4d1c7f1e11f0)

lol