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Each photon contains a certain amount of energy. ... Radio waves have photons with low energies, microwave photons have a little more energy than radio waves, infrared photons have still more, then visible, ultraviolet, X-rays, and, the most energetic of all, gamma-rays.

Even objects that we think of as being very cold, such as an ice cube, emit infrared. When an object is not quite hot enough to radiate visible light, it will emit most of its energy in the infrared. For example, hot charcoal may not give off light but it does emit infrared radiation which we feel as heat.

Infrared is radiated heat: the feeling of warmth from the sun on your face; the heat from a coal fire, or a toaster. It is even the same form of heat emitted by your own body. ... Infrared waves travel through the air and when they touch a surface, heat energy is released regardless of the surrounding air temperature.

Visible light occupies a tiny part of electromagnetic spectrum. As you can see we have red and blue colors on extreme ends. Using this relation we get, energy carried by a red photon is ≈ 1.8 eV and of a blue photon is ≈3.1 eV .Mar 9, 2018

All electromagnetic waves move at the same speed in a vacuum. But in material that transmits, the frequencies move at different speeds, with the shorter wavelengths like blue and UV traveling slower than the longer wavelengths like red and infrared.

Infrared waves, or infrared light, are part of the electromagnetic spectrum. People encounter Infrared waves every day; the human eye cannot see it, but humans can detect it as heat. A remote control uses light waves just beyond the visible spectrum of light—infrared light waves—to change channels on your TV.

Infrared imaging, or infrared thermograph, is used in various applications. For instance, night-vision devices use IR radiation to allow humans to see in the dark. IR imaging can also be used in biological applications such as observing the changing in blood flow as thermal monitoring and regulation.

It slams into our bodies and sometimes breaks molecules, but very little of it is converted into heat. The heat we feel from sunlight is infrared. So infrared feels hot because we sense it as heat, and because when we feel its heat, there is a lot of radiation, which makes up for its lower energy content.

Infrared waves have a wavelength 1,000x longer than ultraviolet waves (10^-16 vs 10^-13). ... The amplitude (or height) of an electromagnetic wave is proportional to its intensity. For example, a weak X-ray and a strong X-ray would be shorter and taller, respectively.May 21, 2019