Recent content by Borek

So helium-4 atom doesn't occupy space?

Interesting. I have read about similar technology were in the rubber there were tiny sealed ampoules with glue, they were intended to tear open when the rubber is breaking (for any reason) and to seal out the hole. Sounds like a safer and more convenient approach (both for wrens and users).

Possible, but still a bit strange - it wasn't exposed to temperatures other than it would be on the car, and somehow I don't think goo inside the tyre is something desired.

No, you can have a third, inert gas inside. Oxygen in, carbon dioxide out, inert gas stays inside and its amount is constant, keeping the pressure identical to the outside. I don't see how to get a mask working in conditions given without some additional pump. RO doesn't work against a pressure...

Just a comment: if you see a liquid (whatever, be it water, molten metal, anything), there is a vapor over it. The question is not whether it "can" evaporate (answer is yes, always, actually there is even some vapor over solids), question is "how fast" (and here I doubt you will get a better...

Google for "emergent properties". And this basically boils down to eons old discussion between reductionists and their opponents. Don't expect clear answers, more like more and more questions.

What it tries to say is that the relationship holds precisely only for ideal gas (pointlike molecules with zero volume, no interactions other than elastic collisions), and that the lower the pressure, the closer the real gas is to the ideal gas. This is quite common in the real systems, you...

It is enough that one of them failed and shorted in any way (and for whatever internal reason) to burn two others as they are under 400 V now. That's actually the most likely explanation of what happened.

Perhaps I am missing something, but what kind of li-ion batteries produces over 800V? As far as I am aware it is 4.2 V per fully charged cell, to get to 800+ volts you need almost 200 cells - but connected in series.

Equilibrium process. ICE is just a convenient way of dealing with the math involved (you can call it "math device"), but it doesn't define any property of the system, it just helps describing the principle of mass conservation with equations.

5% HCl is 1.4 M, that's already quite concentrated in the context of just changing pH (yields pH in the zero range, that's seriously acidic). I would start around 1% (which is probably an overkill as well).

You are right in your first paragraph, but I feel like you are misunderstanding some basics here. Stoichiometry (described by the reaction reaction equation) and equilibrium are two separate (although in practice closely related) concepts. Reaction equation describes the stoichiometry, and can...

I would add "at any given point". Our technological civilization grew in just about 3k years (give or take, add a zero, divide by ten, it won't change the weight of the argument by much), there is no way to say how long it will survive but I am rather pessimistic and I don't think it will last...

Interesting approach, and definitely good candidate for something that can be turned into a detection technique. I feel like it is kind of a measure of "how thermodynamically impossible is to see the molecule produced by a natural, abiotic process" (yes, very handwavy, but I am sure it is the...

(emphasis mine) Yes, we haven't seen anything that can't be explained as a natural process (there are some strange observations, but they are random and inconclusive) - but how much have we seen? Can be that the advanced life is quite common, as opposed to intelligence capable of producing...