Semana IX
FIS01184
|
|
| |
|
|
|
|
|
|
| |
Introdução a Fisica Moderna
Efeito Fotoelétrico
e Efeito Compton.
  Albert Einstein's (1879-1955) name is associated with the general and special theories of relativity, but his explanation of the photoeletric effect, a phenomenon which could not be accountex for by electromagnetic wave theory, won him the Nobel prize in physics. He proposed a corpuscular model of radiation as the photoeletric mechanism. Light travels in quanta (or photons) and must be of a certain threshold energy (or color) to cause the emission of electrons from a given surface, while its intensity determines only the number of electrons so released. This German stamp shows electrons escaping at random angles while light strikes the surface. |
WeeK_LinK:
Efeito Fotoelétrico (em português)
Efeito Fotoelétrico (simulação!)
Efeito Fotoelétrico (teoria!)
Efeito Compton (simulação!)
Efeito
Compton (teoria!)
Personage_LinK: Albert Einstein
If I were to have the good fortune
to pass my examinations, I would go to Zurich. I would stay there for
four years in order to study
mathematics and physics. I imagine myself becoming a teacher in
those branches of the natural sciences, choosing the theoretical
part of them. Here are the reasons which lead me to this plan.
Above all, it is my disposition for abstract and mathematical thought,
and my lack of imagination and practical ability.