Recent content by anuttarasammyak

Fermi Dirac distribution of conduction electron gas in metal for T>0 suggests interaction of electrons including degenerate ones. Two electrons of opposite spins in 1s of helium atom interact by Coulomb force.

Ideally all exhasted plasma has momentum of same direction backward. Exhasuted plasma would have the least mass and the maximum momentum by a proposed reaction. Say $$p >> mc$$ $$E=\sqrt{p^2 c^2 + m^2c^4} \approx pc$$ Superrelativistic. It seems close to photon rocket to me.

Though it is not your case FYI the case of photon rockets $$\frac{v}{c}=\frac{1-r^2}{1+r^2}$$ where v is final velocity achieved and $$r=\frac{initial\ total\ mass\ of\ rocket\ - \ consumed\ as\ fuel\ mass}{initial\ total\ mass\ of\ rocket}=\sqrt{\frac{1-\frac{v}{c}}{1+\frac{v}{c}}}$$...

As for neutrinos emitted from the Sun, apparatus on the spaceship leaving the Sun with near light speed would be able to observe slow neutrinos. In this same sense “red-shift” of neutrinos from distant stars should take place.

FYI of recent progress "XENONnT now extends this legacy, lowering the solar-neutrino energy threshold to 17 keV." https://xenonexperiment.org/xenonnt-first-measurement-of-low-energy-solar-neutrinos-scattering-off-electrons/

Inelastic collision means no bounce. The two make one body after collision. When two clay balls of same mass and opposite velocity collide, they make a big ball at rest. The ball is heated by loss of kinetic energy.

FYI experiment video of Double-slit experiment for electrons https://www.hitachi.com/rd/research/materials/quantum/doubleslit/index.html

I think energy to create crator is \sqrt{p^2c^2+m^2c^4}-mc^2 where p is momentum of the villain in time of contact with the Earth in the Earth’s IFR and m is mass of the villain. How he got p does not matter in result.

Some further clarifications, and please correct me if my understanding is wrong. Suppose that the incident light is monochromatic, i.e. it has essentially a single frequency. However, monochromaticity alone is not sufficient to guarantee a clear interference pattern. What is also important is...

Thanks @Cthugha from your comment would it be correct to say that, in a single-photon double-slit experiment, the probability amplitudes associated with the photon's two possible paths interfere?

How about Bloch sphere for qubit? Perhaps you want more than that.

Photons do not interfere. Coherence of light does not matter. Interference takes place in a single individual photon. In loose saying a photon interferes with itself. FYI experiment video of single photon Young double slit experiment by Hamamatsu Photonics in 1982...

Hello. I understand that A and B entangle so that they have same |X>. Alice observes |X>. She anticipates that Bob should observe |X> also but it is not sure, e.g., -He forgets to do it. -His apparatus is out of service or in service but mal-tuned -Photon going to Bob is destroyed or...

$$\frac{1}{T}=\beta=\frac{dS}{dE}=S'(E)$$ ##\beta## is derivative of entropy increase per internal energy increase. Large ##\beta##, small T, implies that the system is hungry for energy to satisfy its desire for entropy. ##\beta## is degree of energy avarice of the system to satisfy its desire...

If the goal is to operate the reactor for an extended period with little or no additional fuel supplied from outside, the issue is not simply one of the breeding ratio; rather, it requires an integrated design that takes into account core burnup, neutron economy, and reactivity changes over the...