Firstly, allow me to answer your question: Of course I see the difference. I thought that my first post in this thread made that explicitly clear. The reason why I kept participating is because I have no idea what those steps could be.
It's not as if I had a clear idea of what "frozen...
I think it would be prudent to split the discussion into two separate flows, here.
First: If a group of fermions can be created by the collision of photons, could we consider that group of fermions to be "frozen radiation"?
is (a derivation of) what the original poster was asking.
Second: Are...
Ah, I see that now.
Hrm...
Hrmmmmmmmmmmmm...
What about combinations of particles? For instance, an atom of helium-4 can be both electrically neutral and have a spin of 0, and so can a molecule of parahydrogen. For such a composite particle, would there be any other considerations with...
...I thought that could be trivially overcome by creating an electron-positron pair simultaneously? Every book I've read thus far on quantum physics mentioned that you can get a particle-antiparticle pair if two sufficiently high-energy photons collide.
That's a neat question, actually.
Here's the thing: You can turn lots of energy into a little matter, and you can turn a little matter into a lot of energy. That much is true.
Now, apart from that... what other things would your phrasing entail? What would need to happen for us to be able to...
Oooooooh! Neat!
Still, I will need one more nudge. I tried searching for the rate of expansion of a gas during a free expansion, but I didn't find any relevant equations. A little more help? (Maybe it has something to do with the mean speed of the molecules in it?)
Greetings to everyone. I would like to ask how the shape of a rocket exhaust plume changes with distance, when the rocket operates in a vacuum. What I'm mainly looking for, is to see how large the diametre of the plume would be at a distance of ~20km from the nozzle. We're assuming an ordinary...
I don't usually do those, but the forum guidelines asked me to and I see no reason to refuse.
Long story short: Hello, my name is Alonso Quixano. I consider that name to be apt.
I am here to ask some questions I had regarding the operation of rockets, and ask for directions on where I could...