dec 73d 250 cc5 51f e1b 16c 379 be6 c2b 012 562 612 8ef c9a a4e 50b 5a1 ef9 229 0f6 329 eca 23e c9e 301 cf2 3c9 cc6 2b9 218 83c 36f 4ac 4a6 91f a95 870 97f 11c a43 2c3 d24 c6b 577 d63 8c7 644 375 eb4 0ff da3 15f 79c 8b0 649 b7a cb2 80d 17d b0e 4b1 565 82a de3 1fe 86e fc6 165 e84 9b9 f46 36e b03 857 741 df7 8db f64 7cd 2af 1c5 06e cca 4ad 8bf f69 9c6 440 7bf 27d 52a 823 635 e33 2b2 405 329 896 868
This follows directly from the electromagnetic energy spectrum and the respective temperatures of the Sun and Earth. The Sun emits radiation at a shorter wavelength than the Earth because it has a higher temperature, and Planck's curve for higher temperatures peaks at shorter wavelengths.
Does the sun or Earth emit more radiation?
The sun, T=6000�K, emits vastly more energy than the earth at T=300�K. The wavelength of maximum energy radiated by a body is given by Wien's displacement law: Lambda = A / T.
Does the Earth emit less radiation than the sun?
When it reaches the Earth, some is reflected back to space by clouds, some is absorbed by the atmosphere, and some is absorbed at the Earth's surface. However, since the Earth is much cooler than the Sun, its radiating energy is much weaker (long wavelength) infrared energy.
How does the radiation emitted from the Earth differ from that emitted by the sun?
The Earth emits mostly longer wavelength infrared radiation that we cannot see. Sunlight made up of visible light passes through the atmosphere on the way into Earth, but the greenhouse gases in the Earth's atmosphere absorb infrared radiation going out to space.
Why does the sun emit so much energy?
The sun generates energy from a process called nuclear fusion. During nuclear fusion, the high pressure and temperature in the sun's core cause nuclei to separate from their electrons. Hydrogen nuclei fuse to form one helium atom. During the fusion process, radiant energy is released.
Does Earth emit radiation?
Once in the Earth's atmosphere, clouds and the surface absorb the solar energy. The ground heats up and re-emits energy as longwave radiation in the form of infrared rays. Earth emits longwave radiation because Earth is cooler than the sun and has less energy available to give off.
What type of radiation does the Sun emit?
All of the energy from the Sun that reaches the Earth arrives as solar radiation, part of a large collection of energy called the electromagnetic radiation spectrum. Solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays. Radiation is one way to transfer heat.
Why does the Earth emit infrared radiation?
Just as sunlight warms you, it warms the surface of the Earth as well. The Earth does not continue to get hotter and hotter as it absorbs energy from the sun, because it gives off energy to space as invisible infrared radiation.
What type of radiation does the sun emit?
All of the energy from the Sun that reaches the Earth arrives as solar radiation, part of a large collection of energy called the electromagnetic radiation spectrum. Solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays. Radiation is one way to transfer heat.
Why does the Sun emit mostly infrared waves and visible light and Earth emits infrared waves?
Earth scientists study infrared as the thermal emission (or heat) from our planet. As incident solar radiation hits Earth, some of this energy is absorbed by the atmosphere and the surface, thereby warming the planet. This heat is emitted from Earth in the form of infrared radiation.
