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No, the neutrons produced in nuclear reactors don't travel anywhere near the speed of light. Let's look at this a bit. In the "standard" fission reactor, fissile nuclear fuel is "started up" and the neutron chain reaction begins. Neutrons are produced during atomic fission events, and these neutrons are sometimes called "fission energy" or "prompt" or "fast" neutrons. They are the free neutrons that appear as the result of the fission event. And they're moving pretty darn quick when they're "blown out" of the fissioning nucleus. But they're not moving anywhere near the speed of light. The Boltzman distribution (a fancy way of speaking about the range of energies at which the fast neutrons appear), has a strong peak at close to 2 MeV (20 TJ/kg). That translates into a speed of 28,000 km/s. The speed of light is some 299,792 km/s as we've defined it, and that puts the speed of those fast neutrons at roughly 10% the speed of light.

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Q: In nuclear reactors do neutrons travel faster than the speed of light and if so what about the theory of relativity according to which nothing can travel faster than the speed of light?
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What happens to mass as acceleration increases?

Nothing. The force increases but the mass is constant. However if it gets fast enough the mass will increase ever so slightly and get much higher near the speed of light, according to Einstein's theory of relativity. But at ordinary speeds there is insignificant change


What is the lightest subatomic particle of an atom?

electrons the smallest but weigh as much as protons neutrons weigh nothing ~Kay


When did Albert Einstein discover the theory of relativity?

Einstein's theory of special relativity, proposed in 1905, states that nothing in the universe can travel faster than the speed of light in a vacuum. !!!!! But researchers at the CERN lab near Geneva claim they have recorded neutrinos, a type of tiny particle, traveling faster than the barrier of 186,282 miles (299,792 kilometers) per second.!!!!! << major breakthrough.. Because we have based almost everything on his relativity E=MC^2


What did the theory of relativity do for science?

If anything, It gave a sort of "Universal speed limit" for all matter. That includes the "event wave" in front of a photon. Mathematically, nothing can travel faster than that.


Why was the theory of relativity invented?

It was invented when Albert Einstein realized that Universal Gravitation was incorrect. He realized that he needed to propose a theory which would resolve this problem. When Einstein completed Special Relativity, he formulated that nothing travel faster than the speed of light. However, Newtonian Gravitation stated that Gravity was an instantaneous force, therefore this was problematic. Thus Einstein worked on General Relativity to resolve this query by introducing spacetime distortion which result in the gravitational waves that travel at the speed of light.

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