Meaning & use
photon
A particle representing a single quantum, or discrete unit, of light or other electromagnetic radiation.
See it in a sentence
A single photon of light can, under the right conditions, trigger a detector.
Solar panels convert energy from photons into an electric current.
A note on using this word
Photons have no mass and always travel at the speed of light, a key idea in quantum physics.
Words with a similar meaning
This term is best learned through its definition and examples.
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Make it your own
Write a sentence using “photon”, then compare your use with the examples above.
Your draft stays on this page and is not sent anywhere.