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The Action Lab video about negative Kelvin temperature violates laws of thermodynamics ?
https://youtu.be/jdjTYlReE-I
This guy has excellent videos on several science subjects. Now one w ... |
25-1-2024 at 12:06
by: metalresearcher |
Are plastics really difficult to recycle ?
I think that the only way of 'recycling' is chemical recycling, which means pyrolyzing plastic waste ... |
29-11-2023 at 00:26
by: metalresearcher |
ITER: A useful nuclear fusion experiment or a waste of money ?
Seen a lot of videos on this project comprising on nuclear fusion using a gargantuan building in the ... |
28-11-2023 at 09:46
by: metalresearcher |
Exploding aircons and fridges, really ?
[rquote=688501&tid=159959&author=SplendidAcylation]This guy is crazy!
[snip]
However, furt ... |
11-11-2023 at 04:39
by: metalresearcher |
Exploding aircons and fridges, really ?
Youtuber NOBOX7 posted a video about aircons which have cyclopentane as a refrigerant, which is flam ... |
10-11-2023 at 10:10
by: metalresearcher |
thermite cutter
I had no problems with this mixture. I mixed 69% generic thermite (3 parts Fe2O3 + 1 part Al powder) ... |
30-10-2023 at 11:14
by: metalresearcher |
Manufacturer claims their skillets can withstand temperature of 30000 F
A New Jersey woman has filed a lawsuit against a cookware manufacturer who claims that their skillet ... |
20-10-2023 at 10:37
by: metalresearcher |
"Smart Burn": What's in it?
What I notice that Smartburn Australia is the only supplier in the world, so it appears that it does ... |
20-10-2023 at 08:51
by: metalresearcher |
"Smart Burn": What's in it?
"B(a)P: That's a good article. It seems like it says the catalysts did not decrease the level of pol ... |
19-10-2023 at 09:05
by: metalresearcher |
"Smart Burn": What's in it?
The catalyst presumably vaporizes, whioech means that it is consumable and the device has to be refi ... |
19-10-2023 at 00:05
by: metalresearcher |
Why do we need so many elements (and energy) ?
[rquote=687940&tid=159910&author=Dr.Bob]I agree that it is possible to reduce energy usage, ... |
14-10-2023 at 06:13
by: metalresearcher |
Why do we need so many elements (and energy) ?
Not a real chemistry topic, but at least scientific related to chemistry.
Since long (and recently ... |
13-10-2023 at 09:07
by: metalresearcher |
The logic behind symbols of chemical elements ?
That is what always wondered me. The symbols have either one uppercase letter (e.g. B, C, N) or one ... |
11-10-2023 at 08:21
by: metalresearcher |
Is compressed oxygen in a cylinder a supercritical fluid ?
A supercritical fluid is a substance over its critical temperature and its critical pressure. So wat ... |
4-10-2023 at 07:52
by: metalresearcher |
Proper electrode material for arc melting steel
Sometimes I melt (stainless) steel using a DC arc welder with carbon rods. But after melting, the st ... |
16-9-2023 at 10:06
by: metalresearcher |
SiO2 + Na thermite reaction?
[rquote=686740&tid=159711&author=averageaussie]
what setup do you have to melt the silicon? ... |
17-8-2023 at 12:15
by: metalresearcher |
Potassium mirror ?
Heating a question mark shaped retort tube which was welded on one end snd coupled with a 10mm boros ... |
16-8-2023 at 10:32
by: metalresearcher |
SiO2 + Na thermite reaction?
I tried reacting SiO2 with Mg powder, it is a (rather slow) sustainable reaction, it gets very hot a ... |
16-8-2023 at 07:10
by: metalresearcher |
Why is Beryllium so rare ?
Being the fourth element in the periodic table, it one of the rarest elements, particularly so low i ... |
10-8-2023 at 10:55
by: metalresearcher |
How do you find the temperature at equilibrium?
Well, *any* compound will disintegrate above a few thousand K.
I think, even CO2 gets unstable abov ... |
10-8-2023 at 08:55
by: metalresearcher |
Stainless steel retort molten when heating K2CO3 + C ?
Finding a better method to isolate potassium (I did it successfully with KCl + Lithium), I did a a p ... |
8-8-2023 at 12:14
by: metalresearcher |
KCl+Li does react and isolates K metal but why not KCl+Mg ?
[rquote=686339&tid=159771&author=RustyShackleford]further inquiry to the NIST database revea ... |
4-8-2023 at 22:37
by: metalresearcher |
KCl+Li does react and isolates K metal but why not KCl+Mg ?
Recently I heated up KCl + Li metal in a retort to 800 C and captured K vapor in mineral oil condens ... |
4-8-2023 at 09:12
by: metalresearcher |
Yield of KClO₃ from boiled bleach
Electrolyzing diet salt (2 parts KCl and 1 part NaCl) and then precipitating KClO3 after cooling is ... |
19-6-2023 at 09:08
by: metalresearcher |
Homemade carbon electrodes
@C6Br6: Good idea.
I want to try it out baking with sugar, I don't need them for KClO3 / KClO4 ele ... |
24-5-2023 at 00:40
by: metalresearcher |
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