A laser pointer used in a lecture hall emits light at 650 nm. What is the frequency of this radiation? Using Figure 6.4, predict the color associated with this wavelength.

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Wavelength (m)- 10-9 10-11 10-7 10-5 10-3 10-1 101 103 Gamma! X rays !Ultra- i violet rays Infrared iMicrowavesi Radio frequency 1020 1018 1016 1014 1012 1010 108 106 104 Frequency (s-1) Visible region 400 500 600 700 750 nm