Recent content by nehorlavazapal

Yes, that's what I have meant. Are there any particles that would come close.. like a few kilometers, i.e. very cold neutrinos or WIMPs?

Yes, please forgive me if I am missing sometihing: I would rather reformulate my question: are there any fundamental bariers that would prevent a small macroscopic agregate (like 10^6 atoms) from having a 95 % probability of being inside a galaxy via extremely low associated energy? For exampe...

Yes, of course. I was only asking if it is possible in theory..at let's say 10^-20 K. For example if vacuum fluctuations would collapse the wave function into a smaller volume.

Am I right to think that particles cooled asymptotically to 0 K would have wave functions the size of galaxies or even larger (provided they would stay cooled long enough for that light cone---).

Hi, does anyone know how much of the universes's iron or carbon has been made in supernovae that formed black holes? Is it 5, 10, 50 % of the iron currently pressent here? And, if se, do we have any idea how much of the average stars content gets traped in the BH versus the mass of the...

I can't afford a support structure, it's antimatter drive designed to intercept only a fraction of the hard gammas produced in anihilation. It is not a viable option. Some new physics is needed to take care of the gammas, the antimatter drive as currently pressented is dead. It needs to produce...

Homework Statement I need to generate a field of B = 10 T at the center of a magnetic loop (coil). The coil should have r = 70 m. The coil material itself should be a cable of r = 0.2 m. The question, how much mechanical stress is applied throughout the loop? I'm trying to figure out, if such...

Or to put it another way, if the loop was made out of best CNTs, it would take 7 GN of stress, so how strong magnetic field would it generate 70m away, down in the center. This loop would intercept only 1/350 of resulting gamma rays out of the antimatter reaction, as. antiprotons, only 1/1000th...

I can't go into detail right know - but the thing is: in order to make a real antimatter engine one would need to make a loop of SCs wire r = 70 m, where r(wire) is approx. 20 cm. I need to generate about 10 T in the center of the field, that is 70 m from the nearest wire. How much mechanical...

The total heat released will be 4180 J per kg × 25 × 35 billion = 3,65 × 10^15 J. Wow, that's a lot of heat stored in human blood! S = 502 000 m^2. So in total each m^2 would need to radiate/conduct 7,2×10^9 J. That's a lot. Can somebody offer a model in some kind of computer program? This is...

Hi, If we took the blood of all people here on Earth and made a ball of it (r=200, T = 310 K) how long would it take for it to cool down to ~ 285 K in vacuum (absent of sunglight)? How long would it take to cool down in air, with reasonable conduction speeds?