21

New Theories / Re: what is temperature?

« on: 18/11/2024 20:07:27 »

There are subtle differences between Catherine/Catharine

So subtle that both colleges have crests featuring Catherine wheels.

and Magdalen/Magdalene.

Again, the difference is spelling.
Both refer to Mary.

22

New Theories / Re: what is temperature?

« on: 18/11/2024 10:32:01 »

I guess the "trick question" ones are Queens and Kings.
Jesus (AKA Corpus Christi) and
Mary Magdalen
each have a college.

Are there two Saints Catherine and two Saints  John?

23

New Theories / Re: what is temperature?

« on: 17/11/2024 17:01:24 »

The Boltzmann equation actually derives from considerations of thermal noise in a conductor.

This was particularly clever of him since he derived  the eqn in 1872 and the electron was not discovered until 1897.

24

Physiology & Medicine / Re: How Does Your Body Burn Fats And Oils?

« on: 17/11/2024 00:36:35 »

protein doesn't lead to weight gain.

It certainly can contribute to it.

25

Physiology & Medicine / Re: How Does Your Body Burn Fats And Oils?

« on: 17/11/2024 00:35:13 »

Occasionally, as with a stopped clock, PC gets something right.
https://en.wikipedia.org/wiki/Protein_toxicity#Epidemiology

There's also a condition  referred to as "rabbit starvation" (rabbit meat is very lean).


On the other hand, he's sometimes laughably wrong.

Ketosis is also a diet

26

New Theories / Re: what is temperature?

« on: 17/11/2024 00:17:47 »

Pick one.

Antenna temperature is well defined.

Antenna Temperature is a measure of the noise generated by an antenna in a given environment,... This is not the physical temperature of the antenna itself; rather, it depends on ....

Then tell me, is the temperature of the electrons going up and down, the same as that of the electrons going side to side?

Do you realise that a noise temperature or antenna temperature isn't a real temperature of anything?
e.g.

"C-band LNB
Here is an example of a North American C-band LNB:

Local oscillator: 5.15 GHz
Frequency: 3.40?4.20 GHz
Noise temperature: 25?100 kelvins"

From
https://en.wikipedia.org/wiki/Low-noise_block_downconverter#C-band_LNB

27

New Theories / Re: what is temperature?

« on: 16/11/2024 11:40:58 »

The purpose of antennae is not that they produce black body radiation.

Who says it is?

OK, so what antennae do is nothing to do with temperature.

28

New Theories / Re: what is temperature?

« on: 16/11/2024 11:06:47 »

A better question might be why did Alan bring friction into it?

I don't recall doing so. I did point out that friction between mesoscopic objects has a strong chemical (i.e. molecular) component, but, being a physicist, all my pendulums are of course point masses on weightless strings in vacuo. Or, if you really insist, uniform rigid bars suspended on frictioness pivots.

You narrowed down the scope of your physics to a level to be simpler than high school text books.

That's entirely reasonable when communicating with someone who does not understand high school physics.

29

New Theories / Re: what is temperature?

« on: 16/11/2024 11:05:28 »

Here's a temperature measurement based on energy transfer through radiation.

The purpose of antennae is not that they produce black body radiation.

It's obviously very far from equilibrium and does not have a well defined temperature. (For example, if you consider a simple dipole antenna, the electrons going "up and down" are not in equilibrium with the electros going "side to side")
Why did you bring it up?

30

New Theories / Re: what is temperature?

« on: 15/11/2024 15:17:30 »

The total energy of the ZPE of a spring (or a pendulum) is constant.
That's true whether the energy is kinetic or potential.
There are no losses.
So, if you wanted to ask a bot about the energy losses from ZPE, you need to tell it that's what you are referring to.

A better question might be why did Alan bring friction into it?

31

Just Chat! / Re: Where do I get my confidence to challenge established theories?

« on: 15/11/2024 15:00:15 »

I never said it had.
I said that's where you get your confidence.
You ask the bot the wrong question, get an irrelevant answer and think it supports your "new idea".

Which question?

Is molecular motion frictionless ?

32

Physics, Astronomy & Cosmology / Re: Liquid surface waves in an acoustic resonator

« on: 15/11/2024 11:13:35 »

So it's likely entirely electrostatic

Try it in zero gravity.

33

Just Chat! / Re: Where do I get my confidence to challenge established theories?

« on: 15/11/2024 11:10:59 »

Given that the observable answer to "Where do I get my confidence to challenge established theories?" is "chatbots", maybe  you should stop.

Which chatbot do you know that challenged established theories? which theories?

I never said it had.
I said that's where you get your confidence.
You ask the bot the wrong question, get an irrelevant answer and think it supports your "new idea".

34

New Theories / Re: what is temperature?

« on: 15/11/2024 10:42:25 »

So, it's OK to use ChatGPT now?

If you are using it to explain why it's not much use, yes.

Did you forget to answer my question?
Why did you ignore the fact that I was talking about zpe?

35

Just Chat! / Re: Where do I get my confidence to challenge established theories?

« on: 14/11/2024 23:46:57 »

Given that the observable answer to "Where do I get my confidence to challenge established theories?" is "chatbots", maybe  you should stop.

36

New Theories / Re: what is temperature?

« on: 14/11/2024 23:33:26 »

What question did you ask it?

Is molecular motion frictionless ?

So... you missed out the important bit.
Why did you ignore the fact tat I was talking about zpe?

If you ask a better question, you get a better answer. (Even with Chatgpt.)

ZPE.JPG (37.46 kB . 805x236 - viewed 73 times)

37

New Theories / Re: what is temperature?

« on: 14/11/2024 13:20:56 »

It reflects current understanding of mainstream science.

Whose?

What question did you ask it?

38

Question of the Week / Re: QotW - 24.11.08 - How effective are cancer screening tests?

« on: 14/11/2024 10:21:55 »

It's a pity, but not a tragedy.
We all go. I have a better idea than most about when my time will be up.
If I'm lucky, someone will find a cure but the odds are against that.


And I'm lucky enough to have retired early so I have some time to mess about with nerdy stuff.
If my pension fund only has to last as long as expected then I'm fairly wealthy.
If I last l until I get my state pension , then I don't need to worry about funding.

So, at least on that score I'm OK and, at the moment most of me is fine.

But the point remains that, with a comprehensive screening programme, I might be looking at a different outlook.
Of course there might be ten other guys who, having found they had a marginally raised PSA would have  worried themselves into an early grave over nothing. Or there might be 20 people who went short of good A&E care because the money got spent on PSA tests that confirmed that very few asymptomatic middle aged men have prostate trouble.

The question of testing for cancer doesn't exist in isolation.

39

Physiology & Medicine / Re: How Does Your Body Burn Fats And Oils?

« on: 14/11/2024 10:05:43 »

This
https://en.wikipedia.org/wiki/Fatty_acid_metabolism#Fatty_acid_catabolism
is the answer to this
How Does Your Body Burn Fats And Oils?

The effectiveness of the Atkins diet is questionable.

40

New Theories / Re: what is temperature?

« on: 14/11/2024 10:01:15 »

That aside, can you point out which part of its answer is false?

None of it is relevant.
GIGO

I said "The ZPE can't be lost to anything (including any sort of friction) because that would mean that the molecules stopped vibrating and that would violate uncertainty.".
And that's still true.
The GPT poetry doesn't even refer to ZPE, but that may not be its fault.

What question did you ask it?