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990Miles USB Rechargeable Green Laser Pointer Pen Astronomy Visible Beam Light – ASA College: Florida
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Laser Pointer Wavelength, 405nm,445nm,450nm,460nm,473nm, 532nm,589nm,635nm, 650nm, 808nm, 980nm, 1064nm - LaserTo
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A green laser pointer emits light with a wavelength of 550 nm. What is the frequency of this light? - YouTube
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