Hi: What hazards -- other than thermal burns -- does a 400-nanometer-wavelength continuous [i.e. non-pulsed] laser of Class 4 intensity pose to human skin? As far as I know, 400 nm is the longest wavelength classified as "black light". Class 4 laser: http://en.wikipedia.org/wiki/Laser_safety#Class_4 Thanks, Green Xenon
This is Near Ultraviolet light or UV-A. Almost everything about this and other types of UV light can be found here: http://en.wikipedia.org/wiki/Ultraviolet 400nm laser class 4 is just a powerful and concentrated UV-A light. Take care of your skin and eyes.
