What is Night vision?
'''Night vision''' is being able to see in the dark. Some animals, like [[cat]]s, have [[natural]] night vision - they can see in very low light without any help. Humans do not have good night vision. If there is not enough light to see well, a human may need a [[night vision device]] such as night vision goggles to help them see. Night vision goggles come in two types: [[File:Night vision.jpg|thumb|Night vision using amplified light]] [[File:IR Fussbodenheizung.jpg|thumb|Infrared image]] *[[Amplifier|Amplification]] - This increases the visible light, and makes it bright enough for our eyes to see. It works well outside but cannot be used in a completely dark place, such as a cave. * [[Infrared]] - Uses a different part of the light that we cannot see. It sees heat energy. Animals and vehicles produce heat and are easily seen in infrared, even when it is completely black. {{biology-stub}} [[Category:Vision]]