Photon

Photon

A particle of light that acts as an individual unit of energy.

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Industry/Domain: Energy
Category: Solar power
Company: U.S. DOE
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photon

Energy; Nuclear energy

A quantum (or packet) of energy emitted in the form of electromagnetic radiation. Gamma rays and x-rays are examples of photons.

photon

Medical devices; Radiology equipment

A discrete "packet" of pure electromagnetic energy. Photons have no mass and travel at the speed of light. The term "photon" was developed to describe energy when it acts like a ...

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Weather; Meteorology

The massless particle that, according to the quantum theory of radiation, carries the smallest discrete amount of electromagnetic energy ''h''ν, where ''h'' is Planck's constant ...

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Biotechnology; Genetic engineering

A quantum of light; the energy of a photon is proportional to its frequency; E = hv, where E is energy; h is Planck's constant, 6.62 × 10 -27 erg-second; and v is the ...

photon

Physics; Electromagnetism

The particle of energy that makes up light and other forms of electromagnetic radiation. A beam of light is a stream of photons.

dye-sensitised solar cell

Energy; Solar power

A dye-sensitised solar cell is a low-cost thin film solar cell that absorbs light by a sensitizer on the surface of a semiconductor. Then photo-induced electrons are injected from ...

solar energy technologies

Energy; Solar power

Convert solar energy to useful purposes. They can provide: electrical generation by heat engine or photovoltaic means; space heating and cooling in active and passive solar ...

solar hot water

Energy; Solar power

Water heated by the use of solar energy.

solar cell

Energy; Solar power

a solar cell (also called photovoltaic cell or photoelectric cell) is a solid state electrical device that converts the energy of light directly into electricity by the ...

passive solar

Energy; Solar power

Technologies that capture sunlight for heat energy without use of active mechanical systems such as fans or pumps (as contrasted to active solar). Such technologies convert ...

solar power

Energy; Solar power

Also called solar energy, solar power is electricity generated from sunlight, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP). ...

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