Impressive Training at Night - Tracers Flying - Night Vision скачать в хорошем качестве

Impressive Training at Night - Tracers Flying - Night Vision

Live-fire exercises conducted at night featuring US Army Soldiers, US Marines and Jordanian Special Forces. Footage includes machine guns, rifles, tanks, close air support, artillery firing at night. Night vision is the ability to see in low light conditions. Whether by biological or technological means, night vision is made possible by a combination of two approaches: sufficient spectral range, and sufficient intensity range. Humans have poor night vision compared to many animals, in part because the human eye lacks a tapetum lucidum. A night vision device (NVD), also known as a night optical/observation device (NOD), is an optoelectronic device that allows images to be produced in levels of light approaching total darkness. The image may be a conversion to visible light of both visible light and near-infrared, while by convention detection of thermal infrared is denoted thermal imaging. The image produced is typically monochrome, e.g. shades of green. NVDs are most often used by the military and law enforcement agencies, but are available to civilian users. Video Credits: U.S. Marine Corps & U.S. Army | United States Department of Defense ►Subscribe Now -- http://bit.ly/1iAy5UG ►Subscribe to our facebook page -- http://.fb.com/WarClashes21