Different lasers have different colors, such as red, orange, blue, green and yellow. Different colors have different wavelengths. Before buying a laser pointer, you need to determine the wavelength or color. The red laser is usually the weakest, with a wavelength of 632nm. For this reason, the cost of obtaining a red laser is always the lowest. The green laser is stronger than the red laser with a wavelength of 532nm. The most expensive and strongest pointer is the blue pointer with a wavelength of 473nm. Yellow is considered a unique color. If you want to differentiate yourself, it is recommended that you get a yellow pointer with a wavelength of 593.5nm.
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