define radiation. give any two examples where heat is transferred by radiation. what is the name of invisible heat rays which transfer heat by radiation?
Answers
Answer:
Radiation is the emission and propagation of energy in the form of waves, rays or particles. There are three main types of radiation:
Non-ionizing radiation: This is the release of energy from the lower-energy region of the electromagnetic spectrum. Sources of non-ionizing radiation include light, radio, microwaves, infrared (heat), and ultraviolet light.
Ionizing radiation: This is radiation with sufficient energy to remove an electron from an atomic orbital, forming an ion. Ionizing radiation includes x-ray, gamma rays, alpha particles, and beta particles.
Neutrons: Neutrons are particles found in the atomic nucleus. When they break away from the nucleus, they have energy and act as radiation.
》Examples of Radiation
Radiation includes emanation of any portion of the electromagnetic spectrum, plus it includes the release of particles. Examples include:
A burning candle emits radiation in the form of heat and light.
The Sun emits radiation in the form of light, heat, and particles.
Uranium-238 decaying into Thorium-234 emits radiation in the form of alpha particles.
Electrons dropping from one energy state to a lower state emit radiation in the form of a photon.
》the invisible heat rays which heqt are transfered heat by radiation are called infra red ray.
Answer:
Radiatiin is the transfer of heat energy from a hot body to a cold body by means of heat rays,wihout any Material medium between them.
Explanation:
hope it helps u☺...
Thank u