The Photo Electric Effect
- Created by: Holly Hayward
- Created on: 07-12-12 13:26
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- The Photo Electric effect
- What is it?
- The process in which elctrons are emittted from a metal when light with a high enough frequency is shined apon it.
- What Happens?
- 1. Light or Electromagnetic radiation falls onto a surface of a metal
- 2. Free eclectrons on the surface absorb energy from the light.
- 3.The electrons vibrate faster by converting the light energy into kintic energy
- 4. If enough energy is absorbed and converted the electrons will melt bonds and fly free
- Electrons Emitted are called Photoelectrons
- E=hf=hc/wavelength
- h being planks constant =6.63x10-34
- c being the speed of light in a vaccum =3.00x10+8 ms-1
- Wave theory just doesnt work
- Frequency
- Low Frequency- the less energy each electron carries
- The higher the frequency the more energy each electron carries
- Light Intensity
- Hight Intensity Light leads to more electrons emitted
- Low Intensity light leads to less electrons being emitted
- What is it?
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