Field of view.
They are sometimes but not always
Night vision cameras convert ambient light photons into electons. Those electrons are amplified by an electrical and chemical process and converted into visible light.
Poet of the camera.
Most digital camera sensors are sensitive to a small range of IR, as well as visible light.
Visible light.
Throw a snowball on camera 2 when the cameras are off ;)
Mounting a camera describes the process of securing a camera to a more stable base. This could be as simple as putting it on a tripod or mounting it to a more complicated rig.
The LED itself is visible, the light it emits is not. You can "see" the light by looking at it through a camera, for example the one on your cellphone!
The only advantage of having a instant film camera is being able to have a physical picture immediately. The grain on those pictures are horrible to the pictures you will get from even the cheapest digital camera.
it uses infared and heat sensor to make a visible image
The cone and the pyramid both have a base and a tip. The cone has a circular base and only 2 faces, 1 edge, and 1 vertex. The pyramid can have 4 verticies, 6 edges, and 4 faces; or 5 verticies, 8 edges, and 5 faces.
They can be seen. The stars are not visible in picture taken from the moon because the exposure on the camera is set too low.