In the case of a photon, for which m=0, the equation boils down to E=pc. Because photons move at the speed of light regardless of where we view them from, they have momentum, and therefore energy.

What this equation means is thoroughly world-changing ... But if you smash them together with enough energy, you'll get a photon, and electron, and a new matter-antimatter pair of particles ...

That looks strangely similar to the equation for the energy of a photon. Yup. If you like, you can use light with a frequency of f to induce the transition from one energy level to another.

Photons appear and disappear randomly within the cavity due to tiny energy fluctuations in space that cause quantum particles to blink in and out of existence. However, once there, the photon is ...

In their study, Fleming, co-lead author Birgitta Whaley, a senior faculty scientist in the Energy Sciences Area at Berkeley Lab, and their research groups showed that a single photon can indeed ...