Some devices like bar code readers, CD/DVD players, laser

Some devices like bar code readers, CD/DVD players, laser

Some devices like bar code readers, CD/DVD players, laser pointers and dental drills use light of only a single wavelength of frequency. What is the wavelength of light that has a frequency of 4.2 x 10^14 Hz? The post Some devices like bar code readers, CD/DVD players, laser pointers and dental drills use light of only a single wavelength of frequency. What is the… first appeared on Nursing School Essays.

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