At first, the photons settle into a state with zero momentum, but as this state 'fills up', pairs of photons begin to spill ...

Light, heat, radio transmissions, and medical X-rays may not seem all that similar ... and are delivered by massless particles called photons. The only thing that differentiates one type of ...

During the time it takes for its wave to go through one cycle, a gamma-ray wave traveling at the speed of light will travel ... High-energy gamma-ray photons are relatively scarce, and it takes ...

Now, this same black hole is once again captivating scientists with an extraordinary gamma-ray flare that’s emitted photons hundreds of billions of times more powerful than visible light.

Gamma rays are highly energetic photons, and very high-energy gamma rays carry with them energies of trillions of electron volts, a level that is hundreds of billions of times greater than visible ...

"Right now, X-rays used in medical clinics and other industries collect incoming photons as a whole, similar to how white light contains all the colors, but they aren't separated," Das says.