Albert Einstein


Physicist


Curriculum vitae


University of Zurich


Rämistrasse 71
CH-8006 Zürich, Switzerland



Photoelectric effect


In 1905, Albert Einstein described light as composed of discrete quanta, called photons, rather than continuous waves. Based upon Max Planck's theory of black-body radiation, Einstein theorized that the energy in each quantum of light was equal to the frequency multiplied by a constant, later called Planck's constant. A photon above a threshold frequency has the required energy to eject a single electron, creating the observed effect. This discovery led to the quantum revolution in physics and earned Einstein the Nobel Prize in Physics in 1921. [Wikipedia](https://en.wikipedia.org/wiki/Photoelectric_effect)

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Publications


On the Relativity Principle and the Conclusions Drawn from It


Albert Einstein


Jahrbuch der Radioaktivität, 1907, pp. 411-462


Does the Inertia of a Body Depend Upon Its Energy Content?


Albert Einstein


Annalen der Physik, 1905, pp. 639-641