Recent content by VaccumEnergy

Fundamentally speaking, how does a light bulb work? And what other ways are there, could you provide a list please. Define quantum object.

What are the different mechanisms for producing light or radiation. Annihilation comes to my mind. What are some other ways? Also, what state of matter is light? Given that a high energy photon* flows for an infinite amount of time through 'empty' space will it stay as it is forever or would...

The proper time, on the spacecraft , is given by: ##t_0 = t / {gamma}## The proper time must be less than ##16[years]##, is a constraint (i.e. ##t/{gamma} < 16 {years} ##) It then follows that : ##t/{gamma} = (2*4.37*c*years)/(v*{gamma}) < 16 years## Now solving for ##v/c## gives : ##v/c...

Homework Statement [/B] 1. Homework Statement A spacecraft is prepared to visit α-Centauri, which is at the distance 4.37 light years from the Sun. Provisions for the crew are prepared for the duration of 16 years. How fast must the spacecraft travel for this provision to be enough? Answer...

If the Earth was to be shrunk to the size of a small particle (around the size of *10^-11m) how would the properties differ? (given that the mass remains constant) How would the properties differ if the mass size ratio was the same? If it was involved in an exothermic reaction (and us humans...

What is d/di(x+iy)?