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

Pages: [1] 2 3 ... 1510
1
Physiology & Medicine / Re: Does Your Brain Remember Everything?
« on: Yesterday at 22:55:41 »
I thought I already replied to this...

2
Physics, Astronomy & Cosmology / Re: Has E=mc2 been proved practically?
« on: Yesterday at 22:24:26 »
Quote from: acsinuk on Yesterday at 21:38:05
Matter is just made up of electrical charges held apart by magnetic spin inertia in an x,y,z, volume enclosure.
That's not even wrong.
https://en.wikipedia.org/wiki/Not_even_wrong

3
Physics, Astronomy & Cosmology / Re: Has E=mc2 been proved practically?
« on: Yesterday at 22:23:20 »
Quote from: acsinuk on Yesterday at 21:38:05
Physicists needs to physically measure something in terms of its length, weight, time taken etc
One of the etceteras is the magnetic permeability of free space which was defined as something like 4 pi * 10^-7 Henries per metre by defining the ampere as
" that constant current i which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed r = 1 metre apart in vacuum, would produce between these conductors a force F equal to 2 x 10-7 newton per meter of length ".

So the thing you see as a "problem" was solved decades ago.

The use of things like this
https://en.wikipedia.org/wiki/Kibble_balance
Show that we quite definitely can, and in practice do, measure things in such a way to make this
" fundamental electro-magnetic energy cannot be measured in those units "
absurd.

4
Physics, Astronomy & Cosmology / Re: Has E=mc2 been proved practically?
« on: Yesterday at 13:10:51 »
Quote from: acsinuk on 05/12/2023 20:16:14
electromagnetic energy is massless
That's a matter of perspective. Light has no rest mass, but it has relativistic mass.

5
New Theories / Re: Stationary model of the solar system
« on: Yesterday at 09:05:56 »
Quote from: paul cotter on 08/11/2023 21:02:40
Good grief BC!, what a load of cobblers and it's not even a full moon. I read through the whole thread and now I have a headache.
It gets worse...

6
New Theories / Re: Solving the puzzle of wave-particle duality, solution of this problem
« on: 05/12/2023 16:20:04 »
Quote from: cpu68 on 05/12/2023 15:14:42
So what is it ?
It's a quantum object.
So a photon is not a wave or a particle- because it's a photon.
And so on.

I don't mean to be rude, but you don't seem to get the wave-particle duality "problem".


7
Physics, Astronomy & Cosmology / Re: Has E=mc2 been proved practically?
« on: 04/12/2023 23:50:45 »
Quote from: Petrochemicals on 04/12/2023 22:46:20
If you wouldn't mind, the Wikipedia examples are not entirely convincing.
Yes they are.
The problem must lie elsewhere.

8
Chemistry / Re: Are there gel-like and solid-like materials with high diffusivity?
« on: 04/12/2023 20:13:48 »
If the OP had asked a better question then things like ion exchangers and this
https://en.wikipedia.org/wiki/Molecular_imprinting
Might be better answers- but he didn't.

9
Physics, Astronomy & Cosmology / Re: Has E=mc2 been proved practically?
« on: 04/12/2023 16:52:12 »
Yes.

10
New Theories / Re: Solving the puzzle of wave-particle duality, solution of this problem
« on: 03/12/2023 20:23:01 »
Quote from: cpu68 on 03/12/2023 20:03:57
The explanation of wave-particle duality presented in the first post may perhaps be considered not entirely satisfactory
Yes; because it doesn't explain wave-particle duality.
Quote from: cpu68 on 03/12/2023 20:03:57
This can probably be seen as a step towards the final solution.
Yes; that step concludes when you realise it's tosh and you stop wasting time on it and do something useful instead.

11
Chemistry / Re: Are there gel-like and solid-like materials with high diffusivity?
« on: 03/12/2023 12:23:51 »
Quote from: scientizscht on 03/12/2023 02:15:18
Thanks but I think you confuse absorption with diffusion?
Nope, I understand the difference.

12
Physiology & Medicine / Re: Do tranquilizers really work as fast as we see in crime fiction?
« on: 02/12/2023 22:05:31 »
The idea- popular in cartoons and spy films- that you can knock someone unconscious with a blow to the head and have them recover fully, shortly afterwards, is as much a myth as the "chloroform on a cloth" myth.
It's probably more dangerous too- since not many people have ready access to chloroform.

13
New Theories / Re: Why the Earth axis rotation is shifted
« on: 02/12/2023 21:33:10 »
Quote from: Dave Lev on 02/12/2023 18:03:09
So, what kind of force is there which keeps the Earth axis rotation at about 23.5 for relatively long time?
You don't need a force to keep it constant.
The conservation of angular momentum does that.

On the other hand, the earth's motion is complicated.
https://en.wikipedia.org/wiki/Axial_precession
Try learning physics, then you might understand it.

14
Chemistry / Re: Are there gel-like and solid-like materials with high diffusivity?
« on: 02/12/2023 00:26:32 »
Toast?

15
Physiology & Medicine / Re: Do tranquilizers really work as fast as we see in crime fiction?
« on: 01/12/2023 18:39:33 »
Quote from: paul cotter on 01/12/2023 18:23:40
I would not argue with anything in it.
Not even this bit ?
" It takes at least five minutes of inhaling an item soaked in chloroform to render a person unconscious. "

16
Physiology & Medicine / Re: Do tranquilizers really work as fast as we see in crime fiction?
« on: 01/12/2023 17:59:59 »
It depends...
But.
" In 1865 as a direct result of the criminal reputation chloroform had gained, the medical journal The Lancet offered a "permanent scientific reputation" to anyone who could demonstrate "instantaneous insensibility", i.e. losing consciousness instantaneously, using chloroform.[62]"
From
https://en.wikipedia.org/wiki/Chloroform#Criminal_use

It would be tricky to balance a high enough dose to get a fast effect vs a dose that kills  the person.
Not a problem in the OP's scenario.

This sort of thing is a genuine concern.
https://en.wiktionary.org/wiki/chemical_cosh

17
Just Chat! / Re: Would you fart in an elevator?
« on: 29/11/2023 17:19:47 »
Farting in the lift is wrong on many levels.

18
New Theories / Re: Photo of subtle body, photo of soul, photo of astral body
« on: 27/11/2023 23:40:57 »
Quote from: cpu68 on 27/11/2023 22:48:03
If the lower subtle body could be observed in the ultraviolet spectrum, then the higher subtle body should logically be observable in the X-ray spectrum
There is nothing "logical" about that.

19
Chemistry / Re: A machine that smells as well as a dog
« on: 24/11/2023 16:03:26 »
Two things.
Evolution has about a billion year head start on us and
there's no market because the machine would have to be cheaper to build than a dog.

20
Question of the Week / Re: QotW - 23.11.24 What can seeds to for our health?
« on: 23/11/2023 19:39:09 »
If you are careless when eating apples you should be glad that the pips go through unchanged.
If chewed they release cyanide- though not enough to do any harm.

Eating seeds is pretty much universal when you think about it; wheat, maize, rice and so on as well as pulses and nuts are essentially seeds.

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