Special Relativity
The behavior of massless particles is understood by virtue of special relativity. For example, these particles must always move at the speed of light. In this context, they are sometimes called luxons to distinguish them from bradyons and tachyons.
See also: Mass in special relativityRead more about this topic: Massless Particle
Famous quotes containing the words special and/or relativity:
“The experience and behaviour that gets labelled schizophrenic is a special strategy that a person invents in order to live in an unlivable situation.”
—R.D. (Ronald David)
“By an application of the theory of relativity to the taste of readers, to-day in Germany I am called a German man of science, and in England I am represented as a Swiss Jew. If I come to be regarded as a bête noire the descriptions will be reversed, and I shall become a Swiss Jew for the Germans and a German man of science for the English!”
—Albert Einstein (1879–1955)