Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

Does the wavelength (color) of a LASER affect its visibility in the sky?

April 26, 2017affect color laser sky Visibility

0

Posted

Does the wavelength (color) of a LASER affect its visibility in the sky?

1 Answer

0

Posted

A. Yes. Due to the sensitivity curve of the human eye, a wavelength of 635 nM appears at least 4 times brighter than an equivalent power level at 670 nM. Thus, shorter wavelength LASERS will be best where maximum visibility is important. A Green (532nm) LASER is the most visible as a function of power vs. wavelength. The lower the (nanoMeter) number (nM) the shorter the wavelength.