Black Body Radiation Sun Earth

We explore how the radiation emitted by an object depends on its temperature. In the realm of physics a blackbody is an idealized material that absorbs perfectly all em radiation that it receives nothing is reflected and it also releases or emits em radiation according to its temperature.

Energy From The Sun American Chemical Society
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Classical physics can be used to derive an equation which describes the intensity of blackbody radiation as a function of frequency for a fixed temperature the result is known as the rayleigh jeans law.

Black body radiation sun earth. The sun can be considered as a blackbody radiation source at temperature t 5778 k. The radiation maximum for the sun and earth occur at two distinct wavelengths of radiation. Well it all.

For what frequency and what wavelength does the intensity peak. Radiation from the sun which is incident on the earth is reflected by the atmosphere such that the intensity hitting the earths surface is reduced by a factor r. Hotter objects emit more em energy and the energy is concentrated at shorter wavelengths.

A blackbody is an idealized object which absorbs and emits all frequencies. The cosmic microwave background is black body radiation with a temperature of 27 degrees. Use both the the intensity of radiation on earth and that the spectrum peaks about 500 nm to get answers.

Therefore it is probably not a coincidence that our eyes are very sensitive to this specific band of radiation. A body at room temperature about 300 degrees kelvin emits radiation mainly around a wavelength of 10 um which is infrared. Notethe magnitude of the earth curve has been magnified 500000 times.

It has a specific spectrum of wavelengths inversely related to intensity that depend only on the bodys temperature which is assumed for the sake of calculations and theory to be. The solar peak is located in the visible portion of the spectrum. Black body radiation is the thermal electromagnetic radiation within or surrounding a body in thermodynamic equilibrium with its environment emitted by a black body an idealized opaque non reflective body.

What was the first thing that set this whole chain of events into motion. We then look at black body radiation and how the levels of radiation absorbed or emitted by the earth depends on. So we know that physics got turned upside down at the turn of the 20th century but how did that all begin.

Our sun with its surface temperature of about 5777 degrees kelvin emits most of its radiation at about 05 um or 500 nm which is visible light.

Co2 Absorption Spectrum
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