A photon is a packet of electromagnetic radiation. A very small part of the spectrum of that radiation (wavelengths of around 400 to 750 nanometres) is detectable with our eyes and we call this light.

A new theory, that explains how light and matter interact at the quantum level has enabled researchers to define for the first time the precise shape of a single photon.

New CT technology allows for a comprehensive, simultaneous evaluation of lung structure and function, something not possible with standard CT, according to a new study.

Physicists have manipulated individual particles of light, photons, under ultra-stable laboratory conditions. They split a ...

For the first time, researchers have observed how just one particle of light can trigger photosynthesis in bacteria — finally revealing the first step of the crucial process.

The photon-counting detectors developed by Das's team at UH can separate X-ray photons by their energy levels, similar to how a prism splits white light into different colors—and they can help ...

Shape Of A Single Photon Revealed For First Time Thanks To New Computer Model Researchers have modeled the interactions between particles of light and matter.