The term radiant energy refers to energy that travels by waves or particles, particularly electromagnetic radiation such as heat or x-rays. Radiant energy is created through electromagnetic waves and was discovered in 1885 by Sir William Crookes. Fields in which this terminology is most often used are telecommunications, heating, radiometry, lighting, and in terms of energy created from the sun. Radiant energy is measured in joules.
Everyday Examples of Radiant Energy
Virtually anything that has a temperature gives off radiant energy. Some examples of radiant energy include:
- The heat emitted from a campfire
- Emission of heat from a hot sidewalk
- X-rays give off radiant energy
- Microwaves utilize radiant energy
- Space heaters produce radiant energy
- Heat created by the body can be radiant energy
- Lighting fixtures
- Home heating units
- Fixtures that convert solar energy to heat
- Visible light
- Gamma rays
- Radio waves
- A surface heated by the sun converts the energy of the light into infrared energy which is a form of radiant energy
- Cell phones utilize radiant energy to function
- Magnetic motor generators that utilize neodymium magnets create radiant energy
- Audio signals that come to home or cars via radio waves
- Ultraviolet light
- Infrared radiation
- The light emitted from a campfire
- The light generated from a light bulb
- A heated brake disc giving off heat
- The heat from a grill used for cooking
- Water can reflect or absorb radiant energy
- Soil can absorb radiant energy
- Light from the sun
- Heat emitted from a bunsen burner
- Heat from an overused computer
- Heat caused by friction
- Heat emitted from a dryer
- The heat generated by a light bulb
- Heat generated through reflection of visible light
- A window reflects radiant energy
- Heat created from a stove or oven
- Heat emitted from a washing machine
Understanding Radiant Energy
Radiant energy is a form of kinetic energy. Kinetic energy refers to the movement of the energy whether is is of atoms, molecules, waves, substances or objects. Other forms of kinetic energy include thermal energy, sound, motion energy and electrical energy. Without radiant energy, like that from the sun, life on Earth would not be possible.
Radiant energy is the result of a change in configuration of electrons. It can travel through any substance including air, liquid, glass, and space. However, matter is not necessary for transmission of radiant energy. Even in a vacuum environment, radiant energy can move.
Radiant energy moves in a straight line at a very high speed and can be absorbed, transmitted or reflected. Radiant energy is reflected if the object receiving the energy cannot absorb it. If the energy is only partially able to penetrate the object, then it is absorbed. The energy is transmitted if an object cannot absorb it.
All of these examples help to better explain the important concept of radiant energy.
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"Examples of Radiant Energy." YourDictionary, n.d. Web. 16 October 2018. <http://examples.yourdictionary.com/examples-of-radiant-energy.html>.
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