Photon
/ˈfəʊtɒn/ noun
noun ·Moderate ·College level
Definitions
Noun
- 1 The quantum of light and other electromagnetic energy, regarded as a discrete particle having zero rest mass, no electric charge, and an indefinitely long lifetime. It is a gauge boson. particle
"The single-imaging optic of the mammalian eye offers some distinct visual advantages. Such lenses can take in photons from a wide range of angles, increasing light sensitivity. They also have high spatial resolution, resolving incoming images in minute detail."
- 2 a quantum of electromagnetic radiation; an elementary particle that is its own antiparticle wordnet
Example
More examples"A photon is its own antiparticle."
Etymology
From photo- + -on. Coined by American physicist Leonard Troland in 1916 as a unit of light hitting the retina, and later popularized in a more modern sense by Gilbert N. Lewis, with the term gaining acceptance in the physics community by the late 1920s.