Changes

properties as well as wave like properties. According to Maxwell's equations, increasing the  

properties as well as wave like properties. According to Maxwell's equations, increasing the  

intensity of light should increase the number of electrons emitted from metal. The German physicist  

intensity of light should increase the number of electrons emitted from metal. The German physicist  

Lénard did an experiment proving that this was not true. Einstein explained that different particles of light or photons have different frequencies or intensities. Therefore, increasing the intensity of low frequency photons has no effect, while using a higher (blue or ultra violet) frequency of light does cause more electrons to be emitted. The formula Einstein used to explain this was e = hf, where h is Planck's constant and f is the frequency.[http://www.physlink.com/Education/AskExperts/ae24.cfm?CFID=8792067&CFTOKEN=36662276]  

Lénard did an experiment proving that this was not true. Einstein explained that different particles of light or photons have different frequencies. Therefore, increasing the intensity of low frequency photons has no effect, while using a higher (blue or ultra violet) frequency of light does cause more electrons to be emitted. The formula Einstein used to explain this was e = hf, where h is Planck's constant and f is the frequency.[http://www.physlink.com/Education/AskExperts/ae24.cfm?CFID=8792067&CFTOKEN=36662276]  

Although Einstein won a Nobel Prize for explaining the photoelectric effect, Lénard was bitter and wrote antisemitic books claiming that German physics was superior to the Jewish physics of Einstein.<ref>Richard J. Evans, The Third Reich in Power</ref>

Although Einstein won a Nobel Prize for explaining the photoelectric effect, Lénard was bitter and wrote antisemitic books claiming that German physics was superior to the Jewish physics of Einstein.<ref>Richard J. Evans, The Third Reich in Power</ref>