Thermal Camera

This is a follow up to my previous posting as I said cinemas should deploy thermal camera. Some might wonder how does a thermal camera work.

Unlike a normal camera which can only capture light reflected by the objects, thermal camera or night vision camera operates by capturing the upper portion of the infrared light spectrum emitted as heat by objects which is imperceptible to our eyes and amplifying the infrared light to the point that we can easily observe the image. The hotter the objects, such as animal, warm human bodies, running engines, electronic appliances etc. emit more of this infrared light than cooler objects like water, trees or buildings.


Check out this cool thermal imaging of bat video from Discovery.