Every story and comment from the Hacker News API, in a layout borrowed from 2001.
A comment on New Property of Light Discovered. Parent comment
Intensity is number of photons per unit area per unit time, so it takes many photons normally, but a single photon produces a non-zero intensity.
There are no comments on this comment yet.
Intensity is number of photons per unit area per unit time, so it takes many photons normally, but a single photon produces a non-zero intensity.