2.8 Einstein's Contribution-> Quantum Theory (1 Viewer)

[dude431]

2.8 IDENTIFY DATA SOURCES, GATHER, PROCESS AND ANALYSE INFORMATION AND USE AVAILABLE EVIDENCE TO ASSESS EINSTEINS CONTRIBUTION TO QUANTUM THEORY AND ITS RELATION TO BLACK BODY RADIATION

Now I know Einstein explained the properties of photoelectrons (photon model of light). But what are we meant to say about it? In other words, what are we assessing?

Assess: Make a judgement of value, quality, outcomes, results or size.

 

[untamedanimal]

Make a judgement of value, quality, outcomes, results or size of Einsteins explanation of the properties of photoelectrons?

 

[dude431]

Make a judgement of value, quality, outcomes, results or size of Einstein's contribution to the quantum theory.

Thats the dot point.

 

[wahashtini]

Einstein used planck's idea and said that the incident light was quantised. He named a quantum of light ' a photon' The energy of a photon depended o its frequency, according to E=hf. Furthere, Einstein stated that a certain amount of energy was required by an electron to escape the metal surface. He called this the work function. p= h/ lamda.
You can see that the higher frequency UV photons have more mass than the light photons. Photon mass is directly proportional to frequency.

 

[mr EaZy]

Originally posted by wahashtini

p= h/ lamda.

. [/B]

Please explain?

I dont think ive seen this before.

Energy and Work function i think can be thought of as the required frequency of the incoming photons.