Video showing the laser beam at day and night.
See also this great laser comparison: http://bit.ly/n81Tnu (red vs green)
True 50mW Green Laser Pointer (only $20) -- http://bit.ly/2gDN1AJ
Music: DrBio - Tears in the rain http://www.nrk.no/urort/Laat/127597/default.aspx
