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The reflectivity of a substance usually expressed as a percentage of the incident radiation reflected is known as it's albedo or reflection coefficient.
What is the reflected amount of radiation called?
The reflected amount of radiation is called the albedo of the earth.
How do you reflect radiation?
Devices designed to reflect radiation are called reflectors or mirrors. The reflectivity of a surface is a measure of the amount of reflected radiation. Antireflection coatings are used to reduce the reflection from surfaces of optical equipment and devices.
What is the amount of solar radiation reflected off a surface?
around 30% In total approximately 70% of incoming radiation is absorbed by the atmosphere and the Earth's surface while around 30% is reflected back to space and does not heat the surface.
What is the incident radiation?
Incident Radiation: Radiation falling on an object. Sun's rays falling on Moon and gets reflected from its surface. Mainly Moon is radiation reflector not a source of radiator. Moon also radiates small amounts of energy in a limited spectrum of EM.
What is reflected radiation?
Reflection occurs when incoming solar radiation bounces back from an object or surface that it strikes in the atmosphere, on land, or water, and is not transformed into heat. The proportion of incoming solar radiation that is reflected by the Earth is known as its albedo.
How much percentage of the solar energy is received by the Earth?
The amount of solar energy reaching the Earth is 70 percent. The surface of the Earth absorbs 51 percent of the insolation. Water vapor and dust account for 16 percent of the energy absorbed. The other 3 percent is absorbed by clouds.
Can radiation be reflected?
Radiation can be absorbed, reflected, scattered, refracted, or transmitted. Absorbed: energy is retained by a substance. Reflected: the surface returns a portion of the energy. Scattered: the electromagnetic waves are changed from propagating in one direction to all directions.
What reflects radiation the best?
Aluminum foil is a strong IR reflector. Placing sheets of aluminum foil behind your radiator on an exterior wall can reduce heat loss through the wall. Snow's ability to reflect IR radiation back into space helps to keep the planet cooler.
What is the total percentage of solar energy reflected?
Thus, about 71 percent of the total incoming solar energy is absorbed by the Earth system. Of the 340 watts per square meter of solar energy that falls on the Earth, 29% is reflected back into space, primarily by clouds, but also by other bright surfaces and the atmosphere itself.
