Though the energy-mass equation might appear simple, there are some special cases that appear to challenge its assumptions. Take the case of photons, for example. These particles, which represent ...

This solution, which should produce photons with negative energy, was thought to be an artifact of the equations and did not correspond to anything physical. But that field itself consists of ...

A new focus on light. In a recent work published in the Annals of Physics, I have shown that light's interpretation as quantized packets of energy or particles is an outcome of a more subtle kind ...

Since the speed of light was a fantastically large number, and its square was even larger, this meant that even a tiny amount of matter could release a fabulous amount of energy.

Albert Einstein's E = mc2 equation has been used to create matter from light after researchers sped up two gold ions that are positively charged, in a loop.

Discover how Einstein’s theory of special relativity reshaped physics by linking space, time, mass, and energy in a universe governed by the speed of light.

Albert Einstein, in 1905, presented the revolutionary idea of light quanta of energy which equals ħw, where ħ is reduced Planck's constant. There is plenty of experimental evidence on magnetic ...