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8 Cards in this Set
- Front
- Back
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Photon
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Greek word for "light"
Smallest quantity of EM radiation Small bundle of energy AKA quantum |
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4 properties of Photons
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Wavelength
Amplitude Frequency Velocity |
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Wavelength ( λ )
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distance from crest to crest (or trough to trough) of a sine wave.
Shorter WL = Higher Frequency, Higher Energy Longer WL = Lower Frequency, lower energy *Wavelength is INDIRECTLY PROPORTIONAL to frequency and energy! |
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Speed of light (C or Constant)
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What photons travel at. 300,000km/sec or 3.0 x 10^8m/sec
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Period (T)
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time between passage of successive crests
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Frequency (f)
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number of WL passing a particular point per second. measured in Hertz (hz)
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Amplitude (A)
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Intensity (strength) of wave defined by its max height
One half the distance from crest to trough |
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Wave equation
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Velocity = Frequency x WL
or C= fλ REMEMBER: C is constant at 3.0 x 10^8m, and Frequency and WL are inversely proportional |
