Photons and Electrons
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8 Terms
Electromagnetic Waves
Waves that form when electric charge oscillate rapidly
Properties of EM
They are transverse waves 2. They can travel through a vacuum 3. They travel at the speed of light in a vacuum 4. Obey the wave equation 5. Carries energy in form of photons
Energy of a photon
The smallest discrete amount or quantum of electromagnetic radiation. It depends on the frequency of the EM wave
Photoelectric effect
The process that occurs when light shines on a metal and electrons are ejected
Photoelectrons
The electrons ejected from a metal by incident light
The gold leaf electroscope
It is an instrument for detecting and measuring static electricity or voltage
Threshold frequency
The minimum frequency of incident radiation at which electrons will be emitted from a particular metal depended on metal
Work function
The minimum amount of energy needed to emit an electron from the surface of a metal