Night vision is normally associated with police and spies in films. However, night vision has many practical applications. Basically, night vision refers to a device that allows an image to be to be seen in situations where it would be otherwise too dark to see it. Night vision can be achieved either via binoculars or goggles, and you may be surprised by how useful they can be.
Night vision devices work by gathering ambient light that is normally not visible to the naked eye. This can be infrared light, moonlight or starlight. The light is then transferred to a part of the ‘Image Intensifier Tube’ (IIT). Usually, light is made up of protons, but when it enters the IIT, it is transformed in electrons. These electrons are then combined with a phosphorus screen which changes the electrons into light that can be seen by the human eye. The user of the night vision goggles or binoculars then sees a green tinted image of the scene in front of them.
Although the police regularly use night vision, it has many other regular uses too. Night vision can aid a variety of hobbies, including fishing and bird watching. It can enable them to enjoy their hobbies at times when they wouldn’t otherwise have been able to. Night vision is also great for campers. When you are camping, there are often situations where you need to move around at night. While a torch can help with this, night vision makes it as simple as moving around during the day.