Description: World's Best Night Vision Goggles, How Does Night Vision Work?, How to make your own Night Vision Device!, 3D Printed Night Vision Goggles, Sytong night vision device night engineer outdoor test, Mileseey NV20 Night Vision Monocular: Engineering Grade...Very Nice!
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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 .
Night-useful spectral range techniques can sense radiation that is invisible to a human observer. Human vision is confined to a small portion of the electromagnetic spectrum called visible light . Enhanced spectral range allows the viewer to take advantage of non-visible sources of electromagnetic radiation (such as near- infrared or ultraviolet radiation). Some animals such as the mantis shrimp can see using much more of the infrared and/or ultraviolet spectrum than humans.
Sufficient intensity range is simply the ability to see with very small quantities of light.