Nightvision

When a soldier can pinpoint a target in the middle of the night with no visible light to the eye it provides a great advantage over the enemy target. Being able to see in the dark can also come in handy for non-military purposes. Night vision devices come in two basic forms: thermal imaging systems and image enhancement systems. Thermal imaging systems create various types of images from the heat given off by objects, also known as infrared light. The best of these devices can provide useful pictures of people from as far away as 1000 feet. …