PhotoelectricEffect

PhotoelectricEffect - The Photoelectric Effect 4/23/07...

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The Photoelectric Effect The Photoelectric Effect 4/23/07 4/23/07
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Introduction Introduction Experimental evidence that light consists of photons comes from the phenomena of the photoelectric effect. The Photoelectric effect is when electrons are emitted from a metal surface when the light shines on it.
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Introduction Introduction In 1905 Einstien presented an explanation of the photoelectric effect. He proposed that the frequency of light could be reguarded as a collection of discrete packets of energy. Each packet had the energy of E=hf
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Procedure Procedure First our apparatus was set up with the Photoelectric effect apparatus facing mercury light source, with the apparatus connected to a digital voltmeter using alligator clips. We forgot to put a dark cloth over the apparatus which messed up our results Next we turned on the lamp and placed the 435.8 nm over the phototube opening. We set the zero by turning the voltage knob up to the point where the current stopped. We moved the apparatus back untill the scale read 10.
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Procedure From here we increased the voltage and recorded the point where the current just stopped at zero. We repeated this step five times. We repeated these
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This note was uploaded on 04/27/2008 for the course PHYS 101L/102L taught by Professor Johnson during the Spring '08 term at South Carolina.

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PhotoelectricEffect - The Photoelectric Effect 4/23/07...

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