Germany became a modern, unified nation under the leadership of the âIron Chancellorâ Otto von Bismarck (1815-1898), who between 1862 and 1890 effectively ruled first Prussia and then all of Germany.
Laser effects on the skin. Thermal (burn) injury is the most common cause of laser induced skin damage. Thermal damage is generally associated with lasers operating at exposure times greater than 10 microseconds and in the wavelength region from the near ultraviolet to the far infrared.
The green light is more damaging to the eye because it has a wavelength of 533 nm and a high frequency of 1064 nm. The red light has a weaker effect coming in 670 nm, 650 nm, and 635 nm. The frequency of the red light is lower. The power of laser points vary from 1-5 mW.