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en.wikipedia.org/wiki/Infrared

Infrared radiation, or simply infrared or IR, is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore invisible, although it is sometimes loosely called infrared light. ... Infrared radiation is emitted or absorbed by molecules when they change their rotational-vibrational movements.

en.wikipedia.org/wiki/Electromagnetic_radiation

EMR of visible or lower frequencies (i.e., visible light, infrared, microwaves, and radio waves) is called non-ionizing radiation, because its photons do not ...

www.physicsforums.com/threads/infrared-as-heat-waves.443130

Oct 30, 2010 ... ture, which is why infrared waves are often called heat waves. ... I always thought they are called heat waves because the black body radiation ...

physics.info/radiobiology

Because of this, infrared radiation is often mistakenly called "heat waves". ... This last form of radiation is what most people are referring to when they use the ...

www.khanacademy.org/science/physics/light-waves/introduction-to-light-waves/a/light-and-the-electromagnetic-spectrum

Electromagnetic waves are similar, but they are also distinct in that they actually consist of 2 ..... These types of energy include infrared (IR) rays (heat waves given off by thermal ... Because they were considered to be in different categories , scientists did not have a .... Photons carry discrete amounts of energy called quanta.

www.edinformatics.com/math_science/electromagnetic_spectrum.htm

what are the different types of electromagnetic waves? ... Because the electric and magnetic fields are at right angles to the direction of the wave, ... radiation, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays. ... The Planck constant (denoted h), also called Planck's constant, is a physical constant ...

www.livescience.com/38169-electromagnetism.html

Mar 12, 2015 ... Maxwell also developed a set of formulas, called Maxwell's ... Similarly, a longer wavelength has a lower frequency because each cycle takes ... The common designations are: radio waves, microwaves, infrared (IR), ... IR light is invisible to human eyes, but we can feel it as heat if the intensity is sufficient.

courses.lumenlearning.com/boundless-physics/chapter/the-electromagnetic-spectrum

FM radio waves are also used for commercial radio transmission in the frequency ... They have have frequencies from 300 GHz to as low as 3 kHz, and corresponding .... Infrared radiation is popularly known as ” heat radiation,” but light and ..... It is so-named because the spectrum consists of electromagnetic waves with ...

www.easynotecards.com/notecard_set/20224

Infrared waves are often called heat waves because they. A) emanate from relatively hot sources. B) consist of frequencies lower than those of visible light.