14 Facts About Radiation pressure

Radiation pressure is the mechanical pressure exerted upon any surface due to the exchange of momentum between the object and the electromagnetic field.

Forces generated by radiation pressure are generally too small to be noticed under everyday circumstances; however, they are important in some physical processes and technologies.

Radiation pressure forces are the bedrock of laser technology and the branches of science that rely heavily on lasers and other optical technologies.

The pressure is very small, but can be detected by allowing the radiation to fall upon a delicately poised vane of reflective metal in a Nichols radiometer .

Radiation pressure can be viewed as a consequence of the conservation of momentum given the momentum attributed to electromagnetic radiation.

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Where is Radiation pressure, is the incident irradiance and is the speed of light in vacuum.

Just as a wave reflected from a body contributes to the net radiation pressure experienced, a body that emits radiation of its own obtains a radiation pressure again given by the irradiance of that emission in the direction normal to the surface Ie:.

From that it can be shown that the resulting Radiation pressure is equal to one third of the total radiant energy per unit volume in the surrounding space.

Solar radiation pressure is due to the Sun's radiation at closer distances, thus especially within the Solar System.

Solar radiation pressure affects bodies throughout much of the Solar System.

The forces of Radiation pressure exerted on the two sides are equal if the plate is at rest.

The backward acting force of Radiation pressure exerted on the front surface is thus larger than the force of Radiation pressure acting on the back.

Radiation pressure has had a major effect on the development of the cosmos, from the birth of the universe to ongoing formation of stars and shaping of clouds of dust and gasses on a wide range of scales.

Such light-Radiation pressure-induced elastic waves have for example observed inside an ultrahigh-reflectivity dielectric mirror.