Lecture Notes (Photoelectric Effect & X-Rays) - Dickey Physics
Lecture Notes (Photoelectric Effect & X-Rays) - Dickey Physics
Lecture Notes (Photoelectric Effect & X-Rays) - Dickey Physics
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- Planck discussed this idea in 1900, five years prior to Einstein's<br />
paper on the PE<br />
- Planck came up with this idea while studying heat and light<br />
emitted by hot solids<br />
- Planck related the energy radiated by a hot solid to the frequency<br />
of the radiation given off<br />
- classical physics could not explain his experimental results; so<br />
Planck came up with his new idea that atoms radiate energy<br />
in bundles (quanta)<br />
- the amount of radiant energy in each lump is called a quantum of<br />
energy (now it is called a photon)<br />
- Einstein's PE theory was actually an extension of Planck's<br />
work; Einstein said that the change in the atom's energy<br />
being carried off was located in a distinct photon of energy<br />
rather than being spread out continuously over the light wave
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