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posted by Charles on Thursday, February 23, 2012 at 6:08pm.

Laser Pointers emit light waves whose wavelength is 670 nm. What is the frequency for this light?

3x10^8m/s / 670nm = 3x10^8 m/s / 670*10^-9m = 4.48*10^14/s = 448THz

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