New posts in Mass Energy

Why is there a controversy on whether mass increases with speed?

Is there experimental evidence that massless particles such as photons attract massive objects?

Why do lasers cut? Is this a case of light acting as matter?

$E=mc^2$ resembles non-relativistic kinetic energy formula $E_K = \frac{1}{2}mv^2$?

Is electronvolt a mass or an energy unit?

Is a spinning object heavier than a non-spinning object?

Can one create mass from energy?

Potential energy in Special Relativity

Does potential energy in gravitationall field increase mass?

How does $E=mc^2$ put an upper limit to velocity of a body?