difference between infrared and visible light
Both are examples of electromagnetic radiation. Infrared has a longer wavelength (lower frequency) than visible light. Of course visible light is visible to humans and infrared is not (although long wave Infrared is sensible to humans as heat). Fb.13522457416286.
Infrared waves are used in many heating applications because they are easier to generate than visible light waves. That is, they are produced at a lower temperature, and therefore require less exotic materials (like tungsten) that are used in incandescent light bulbs.