Light variables
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Light variables
Could someone please explain the different variables we measure when dealing with light and their relationships to one another? I remember frequency and wavelength, but think I am forgetting one or two? Thank you!
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Re: Light variables
Properties of Light:
1.Wavelength(λ)
a. Distance between two consecutive peaks or troughs in a wave
b. Measured in meters (SI system)
2. Frequency(ν)
a. The number of waves that pass a given point per second
b. Measured in hertz (sec-1) 1Hz=1 (1/s)
3. Speed(c)
a. Measured in meters/sec
b. Speed in Vacuum: 2.9979 x 10 to the 8th power (m/sec)
λν=c
1.Wavelength(λ)
a. Distance between two consecutive peaks or troughs in a wave
b. Measured in meters (SI system)
2. Frequency(ν)
a. The number of waves that pass a given point per second
b. Measured in hertz (sec-1) 1Hz=1 (1/s)
3. Speed(c)
a. Measured in meters/sec
b. Speed in Vacuum: 2.9979 x 10 to the 8th power (m/sec)
λν=c
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Re: Light variables
Remember the speed of light constant: C = 3.00*10^8 m/s and Planck's constant: h = 6.626*10^-34 and the equations that relate the light variables together:
C= wavelength*frequency
Energy = h*frequency
C= wavelength*frequency
Energy = h*frequency
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Re: Light variables
Aside from the speed of light, if you were given the variables from the de Broglie's equation, you can solve for the wavelength and therefore use this wavelength in the equation c = wavelength x frequency.
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