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  1. Naked Science Forum
  2. Profile of Bored chemist
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Messages - Bored chemist

Pages: [1] 2 3 ... 1389
1
New Theories / Re: How does Noether's theorem apply to moments of time?
« on: Today at 08:46:57 »
Quote from: Deecart on Yesterday at 22:40:04
I never do mistakes, i learn.
OK, both instances of the word "I" there should be a capital letter.
And the word "do" is incorrect, the correct word is "make".
You can't even tell us that you don't make mistakes without making  mistakes.

2
New Theories / Re: How does Noether's theorem apply to moments of time?
« on: Today at 08:42:32 »
Quote from: Deecart on Yesterday at 22:15:37
Quote from: Bored chemist on Yesterday at 22:02:39
The point remains; you don't understand Noether's theorem.

Perhaps me, perhaps you.
Whats the proof of that ?

The proof that you don't understand it is your inability to explain what symmetry corresponds to your suggested  "conservation of now".

3
New Theories / Re: How does Noether's theorem apply to moments of time?
« on: Yesterday at 22:08:43 »
Quote from: Deecart on Yesterday at 20:58:10
What insult ?
This sort of thing.
Quote from: Deecart on Yesterday at 00:00:35
Dont call mommy.
Quote from: Deecart on Yesterday at 17:10:37
(calling mommy is not an example)

But the interesting thing is that you don't seem to understand that you are insulting people.
Do you behave like that in real life?

4
New Theories / Re: How does Noether's theorem apply to moments of time?
« on: Yesterday at 22:02:39 »
Quote from: Deecart on Yesterday at 21:02:32
Dont try to fool me with such primitiv recursif trick.
So, you also don't know what recursive means.

The point remains; you don't understand Noether's theorem.

5
New Theories / Re: How does Noether's theorem apply to moments of time?
« on: Yesterday at 20:22:54 »
Quote from: Deecart on Yesterday at 19:44:47
Quote from: Bored chemist on Yesterday at 19:15:46
What symmetry are you putting forward as the counterpoint to your idea that ""now" is conserved?

I dont say anything like that.
I only say that if you dont agree that Noether theorem states that there is some "now" within the block universe, then you are stupid.
You can say : Oh no ! i dont believe ! Or whatever you can say.
This will not change the fact (and i am totaly sure some non stupid guys will understand that; soon they read it).





I believe the usual meme here is "Tell me you don't understand Noether's theorem without saying you don't understand Noether's theorem".


6
Marine Science / Re: Can whales eat when they are in fresh water ?
« on: Yesterday at 19:19:06 »
Quote from: Deecart on Yesterday at 19:13:48
Quote from: Bored chemist on Yesterday at 18:24:54
Do you really believe that vets enjoy euthanizing animals?

I dont believe, i only note that in France if we dont talk about dogs cats and horse (and even in that case they dont really care of the animal), every animal that is not actualy able to survive without help will be euthanized.
If a vet dont know how to help (because it would need some additional work) the animal to survive, he will euthanize it.
 


So, your preference would be to promote and prolong suffering.
Why would you do that?

7
New Theories / Re: How does Noether's theorem apply to moments of time?
« on: Yesterday at 19:15:46 »
Quote from: Deecart on Yesterday at 19:06:31
Quote from: Origin on Yesterday at 18:32:55
Please give an example of one of these illusions.

Please be more specific.
Starting with the assertion of your post, nobody will ever understand what you are talking about.

Quote from: Bored chemist on Yesterday at 18:57:30
What about it?

i can help you :
Quote

Noether's Theorem

*In 1915, the German mathematician Emmy Noether formulated her famous theorem.  It states that every symmetry transformation of a system leads to the conservation of some quantity that is a property of the system

A symmetry transformation is any transformation that preserves the equation(s) of motion for the system.
https://go.owu.edu/~physics/StudentResearch/2005/LauraBecker/SymmetrytoConservation.html

This leads to the fact that there should be some conservation of some quantity that is a property of the system, so the now.
Why dont you agree that some "now" consideration could exists within all the points of views ?



I'm aware of Noether's theorem.
It tells us that conservation laws form  a 1 to 1 correspondence with symmetries.
So, for example, the fact that the universe is symmetrical in time (the laws of physics are the same tomorrow as they were yesterday) tells us that mass/energy is conserved.
The fact that  the universe is isotropic tells us that momentum is conserved and the fact that there is no preferred rotation tells us that angular momentum is conserved.

What symmetry are you putting forward as the counterpoint to your idea that ""now" is conserved?

8
New Theories / Re: How does Noether's theorem apply to moments of time?
« on: Yesterday at 18:57:30 »
Quote from: Deecart on Yesterday at 17:10:37
Noether theorem.
What about it?

9
Marine Science / Re: Can whales eat when they are in fresh water ?
« on: Yesterday at 18:24:54 »
Quote from: Deecart on Yesterday at 17:23:47
Quote from: Bored chemist on Yesterday at 16:05:37
Where did you post that prediction?

I talked to some guy about.

Quote from: Bored chemist on Yesterday at 16:05:37
What basis do you have for your claim that they were "waiting for some pretext to euthanize him"?
Because they are talking about this without even knowing if the animal need it.

Quote from: Bored chemist on Yesterday at 16:05:37
What is your expertise in this field?

I have some good psychological understanding of human behavior.
The vet has some "power" : She can euthanasize the animal.
She has some "weakness" : Incapacity to understand how to save the animal.

She prefer saying she acted (so she isnt prooving herself and others she is not incapacited) to save the well-being of the animal, and not saying she is not able to save his life (accordingly of her expertise).
Her expertise is very important to save her own ego.
She dident save the animal, but her ego is safe.

I am pretty sure that if she was at the place of the animal she would not have choose the euthanasia to save her well-being.


Do you really believe that vets enjoy euthanizing animals?

10
New Theories / Re: Is this New Logic Usefull?
« on: Yesterday at 18:02:28 »
It transpires that I was mistaken. The vanity publishing industry was able to use this "logic" to extract $75 from the OP.

11
New Theories / Re: Is this New Logic Usefull?
« on: Yesterday at 16:07:23 »
Quote from: Bored chemist on 16/06/2022 18:51:22
Is this New Logic Usefull?
2 months on, nobody has suggested a use for it.
And now 4 months...

12
Marine Science / Re: Can whales eat when they are in fresh water ?
« on: Yesterday at 16:05:37 »
Quote from: Deecart on Yesterday at 14:23:00
At least this is the result i predicted : They were waiting for some pretext to euthanize him.
Where did you post that prediction?
What basis do you have for your claim that they were "waiting for some pretext to euthanize him"?
What is your expertise in this field?

13
New Theories / Re: How does Noether's theorem apply to moments of time?
« on: Yesterday at 12:37:47 »
Quote from: Deecart on Yesterday at 00:00:35
I already have read wikipedia.
Read it again.

14
Marine Science / Re: Can whales eat when they are in fresh water ?
« on: Yesterday at 10:44:21 »
It seems they have decided to move the whale into salt water.
https://www.itv.com/news/2022-08-10/trapped-beluga-whale-removed-from-seine-river-after-rescue-mission

15
New Theories / Re: what is temperature?
« on: Yesterday at 09:18:45 »
Quote from: hamdani yusuf on 09/08/2022 23:20:14
How to cool things using light other than laser?
The same way that you would do it using a laser, but using a different light source.
The fact that you ask this proves that you don't understand how laser cooling works.

16
New Theories / Re: what is temperature?
« on: Yesterday at 09:17:53 »
Quote from: hamdani yusuf on 09/08/2022 23:46:38
with the same heat capacity
Heat capacity isn't well defined here.
The heat capacity depends on the available degrees of freedom.
Since, in the case of the negative electron temperature in  lasers we are talking about the heat capacity of a specific electronic transition it's not gong to be possible to get equilibrium within that transition without getting a more general shift towards equipartition.

Quote from: hamdani yusuf on 09/08/2022 23:46:38
It seems like you are trying so hard to look like you know more things than you actually do.
I do know the stuff; I just know that there's not much point trying to explain it to you  because you don't understand and or don't listen.
Quote from: hamdani yusuf on 09/08/2022 23:46:38
If that's not the case, then saying that the laser has negative 5000K is erroneous in the first place.
or it means that your understanding is faulty.
In principle, what you actually get is an infinitely negative temperature.

Please try to realise that it isn't my fault that you do not understand this.
I am not your teacher.

17
New Theories / Re: Why light change its' speed and direction during refraction?
« on: Yesterday at 09:11:50 »
Quote from: hamdani yusuf on Yesterday at 00:39:05
There are many scientists. Sometimes they disagree with each others. You can choose one of them to follow,
...
or you can look at the evidence.
Quote from: hamdani yusuf on Yesterday at 00:39:05
But they are unscientific reasons. We should choose a model based on its explanatory power, i. e.  capable to explain more phenomena with less assumptions.
OK, so what facts and observations  are not explained by the current models in physics?

18
Just Chat! / Re: Energy and healthwise, what is the best thing to eat for breakfast?
« on: 09/08/2022 16:11:28 »
Energy-wise probably fried bread.
Health-wise probably anything but fried bread.


Quote from: Pseudoscience-is-malarkey on 09/08/2022 14:36:55
I'd love to get this right.
We would also like you to get it right, but you can't even frame a sensible question.

19
New Theories / Re: what is temperature?
« on: 09/08/2022 16:09:52 »
Quote from: hamdani yusuf on 09/08/2022 11:02:56
Quote from: alancalverd on 09/08/2022 10:42:20
Quote from: hamdani yusuf on 09/08/2022 03:03:44
Do laser cutters decrease entropy?
no.
So, they don't have negative temperature.
I already explained that there's nothing magical about lasers.
You can use a focused beam of sunlight to cut stuff with.
No laser required; no negative temperature required.

There's also nothing special about lasers for cooling.

20
New Theories / Re: what is temperature?
« on: 09/08/2022 16:07:54 »
Quote from: hamdani yusuf on 09/08/2022 05:09:38
Quote from: Bored chemist on 03/08/2022 14:27:05
In a HeNe laser the electronic temperature is negative.
What's the magnitude, in Kelvin?
I'd have to do lots of complicated maths but, for the sake of discussion, let's pretend that I have done it and the answer is minus 5000K.

What use are you going to make of that information?
Because, if you don't have a good answer, I'm going to take it as further proof that you are a troll.
It will prove that you were just trying to trick me into doing lots of pointless work.

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