# Planck, Max (1858–1947)

## Definition

### Astronomy

- German physicist who set out quantum theory – the science of energy in discrete quanta rather than continuous radiation – in work first published in 1900. Planck’s Constant (usually represented by the symbol h) gives the relationship between the frequency of a particular
__photon__ and its energy. Planck also set out the formula for the energy distribution in the spectrum of a black body.

http://www.dictionarycentral.com/definition/planck-max-1858-1947.html