event ticket holders. Infrared LEDs can be used

Posted by shiekh shazia on July 28th, 2016

event ticket holders. Infrared LEDs can be used for illuminators for night vision systems. LED flashlights may be specified to be compatible with night vision devices. A less common type of flashlight uses a High Intensity Discharge (HID) lamp as the light source. An HID gas discharge lamp uses a mixture of metal halide salts and argon as a filler. HID lamps produce more light than an incandescent flashlight using the same lling

http://www.dermayouth.org/which-tactical-flashlight-to-choose

wands are frequently used for directing automobiles or aircraft at night. Colored lenses placed over the end of the flashlight are used for signalling, for example, in railway yards. Colored light is occasionally useful for hunters tracking wounded game after dusk, or for forensic examination of an area. A red filter helps preserve night vision after the flashlight is turned off, and can be useful to observe animals 

http://www.dermayouth.org/which-tactical-flashlight-to-choose