By the sun - 99.99% (and maybe a few more 9's) of the electromagnetic radiation we see on earth comes from the sun. A tiny bit comes from extra-solar space, and we produce a bit from light bulbs, radio transmitters, etc.
All EM radiation is made by a charged particle undergoing acceleration.
An electromagnetic wave, or electromagnetic radiation.
Light is the most common form of electromagnetic radiation that you see in your daily life.
Convection and radiation (internally) and radiation (externally).
In most contexts radiant energy would be assumed to be made up of electromagnetic radiation, such as light. The force carrier for electromagnetic radiation is a massless fundamental particle, the photon.
Gamma Radiation
Electromagnetic radiation is carried by electromagnetic waves.
Electromagnetic radiation is made of energy. Very small amount of energy for radio waves or large amounts of energy for gamma rays. Visible light is electromagnetic radiation.
Gamma rays have the highest energy of all electromagnetic radiation wavelengths.
Electromagnetic radiation (EMR) is the oscillation and movement of magnetic and electric fields which are perpendicular to each other. This is the way in which electromagnetic radiation is propagated. Photons are another term for higher energy EMR, and it could also be argued that photons make up some forms of electromagnetic radiation.
Electromagnetic radiation is made up of electric and magnetic fields oscillating together in the form of waves. These waves can vary in frequency and wavelength, giving rise to different types of electromagnetic radiation such as radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.
Radiation is the transfer of heat energy through space by electromagnetic radiation. Most of the electromagnetic radiation that comes to the earth from the sun is invisible. ... In electromagnetic radiation, its frequency is the number of electromagnetic waves moving past a point each second.
Electromagnetic radiation.