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Author Topic: Lessons In Physics  (Read 41729 times)

Offline DoctorBeaver

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« Reply #100 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]
 

Offline Mr. Scientist

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« Reply #101 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.
 

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« Reply #102 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?
 

Offline Mr. Scientist

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« Reply #103 on: 08/01/2009 19:54:35 »
No no, these grams measure the energy.
 

Offline Mr. Scientist

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« Reply #104 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.
 

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« Reply #105 on: 08/01/2009 21:25:01 »
The use of grams is confusing in itself because we normally use SI units.
 

Offline Mr. Scientist

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« Reply #106 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.
 

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« Reply #107 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.
 

Offline Mr. Scientist

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« Reply #108 on: 08/01/2009 22:19:58 »
That could be a wiseful idea.

Are you a moderator here?
 

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« Reply #109 on: 08/01/2009 22:34:00 »
Yep.
 

Offline Mr. Scientist

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« Reply #110 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?
 

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« Reply #111 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.
 

Offline Mr. Scientist

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« Reply #112 on: 08/01/2009 22:51:13 »
Well then, don't let me bore you.
 

Offline Mr. Scientist

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« Reply #113 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.
 

Offline Chemistry4me

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« Reply #114 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
 

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« Reply #115 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.
 

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« Reply #116 on: 08/01/2009 22:59:37 »
C4me
That's Africkin good joke.
 

Offline Mr. Scientist

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« Reply #117 on: 08/01/2009 23:06:52 »
lol
 

Offline Chemistry4me

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« Reply #118 on: 08/01/2009 23:55:19 »
Thank you sophiecentaur, I must say that my brain has never Ben-in such good shape! :D
 

Offline Bikerman

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« Reply #119 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.
 

Offline Soul Surfer

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« Reply #120 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.
 

Offline yor_on

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« Reply #121 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.
« Last Edit: 10/01/2009 13:22:59 by yor_on »
 

Offline Soul Surfer

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« Reply #122 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.
 

Offline Bikerman

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« Reply #123 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.....
 

Offline Chemistry4me

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« Reply #124 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*
 

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« Reply #124 on: 13/01/2009 00:39:52 »

 

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