There is really no such thing as a “heat wave” from a physics point of view, although some people will (incorrectly IMO) refer to infrared radiation with this term. Our eyes are not adapted to detect infrared radiation, although we can feel it heat our skin, and we can detect it with special instruments and photographic film. read more
These waves aren’t infrared heat waves, but rather heat waves of air of different temperatures. Because the objects are hot, the air around these hot objects heat up. read more
Visible light is the light that we can see, and thus is the only light detectable by the human eye. White light is visible light, and it contains all the colors of the rainbow, from red to violet. The range of visible wavelengths is 400 to 700 nanometers. read more
*Far infrared light refers to infrared light near the microwave part of the spectrum. Low Light Imaging. Low light night vision goggles require that there is some light in the area. They work by intensifying the light signals, sort of like a speaker that amplifies sound when you turn up the volume. read more