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Emission (electromagnetic radiation)

 

 
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Emission (electromagnetic radiation)
 
 
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In physics
Physics

Physics is the natural science which examines basic concepts such as energy, force, and spacetime and all that derives from these, such as mass, charge, matter and its Motion ....
, emission is the process by which the energy
Energy

In physics, energy is a scalar physical quantity that describes the amount of Work_ that can be performed by a force. Energy is an attribute of objects and systems that is subject to a conservation law....
 of a photon
Photon

In physics, the photon is an elementary particle, the quantum of the electromagnetic field and the basic unit of light and all other forms of electromagnetic radiation....
 is released by another entity, for example, by an atom
Atom

|-! bgcolor=gray | Properties|-||}The atom is a basic unit of matter consisting of a dense, central atomic nucleus surrounded by a electron cloud of electric charge electrons....
 whose electron
Electron

The electron is a subatomic particle that carries a negative electric charge. It has elementary particle and is believed to be a point particle....
s make a transition between two electronic energy level
Energy level

A Quantum mechanics system or particle that is Bound state, confined spatially, can only take on certain discrete values of energy, as opposed to Classical mechanics particles, which can have any energy....
s. The emitted energy is in the form of a photon.

The emittance
Emittance

Emittance may refer to:*Beam emittance*Thermal emittance...
 of an object quantifies how much light is emitted by it. This may be related to other properties of the object through the Stefan–Boltzmann law.

For most substances, the amount of emission varies with the temperature
Temperature

In physics, temperature is a physical property of a Physical system that underlies the common notions of hot and cold; something that feels hotter generally has the greater temperature....
 and the spectroscopic composition
Spectroscopy

Spectroscopy was originally the study of the interaction between radiation and matter as a function of wavelength . In fact, historically, spectroscopy referred to the use of visible light dispersed according to its wavelength, e.g....
 of the object, leading to the appearance of color temperature
Color temperature

Color temperature is a characteristic of visible light that has important applications in lighting, photography, videography, publishing, and other fields....
 and emission lines.






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Encyclopedia


In physics
Physics

Physics is the natural science which examines basic concepts such as energy, force, and spacetime and all that derives from these, such as mass, charge, matter and its Motion ....
, emission is the process by which the energy
Energy

In physics, energy is a scalar physical quantity that describes the amount of Work_ that can be performed by a force. Energy is an attribute of objects and systems that is subject to a conservation law....
 of a photon
Photon

In physics, the photon is an elementary particle, the quantum of the electromagnetic field and the basic unit of light and all other forms of electromagnetic radiation....
 is released by another entity, for example, by an atom
Atom

|-! bgcolor=gray | Properties|-||}The atom is a basic unit of matter consisting of a dense, central atomic nucleus surrounded by a electron cloud of electric charge electrons....
 whose electron
Electron

The electron is a subatomic particle that carries a negative electric charge. It has elementary particle and is believed to be a point particle....
s make a transition between two electronic energy level
Energy level

A Quantum mechanics system or particle that is Bound state, confined spatially, can only take on certain discrete values of energy, as opposed to Classical mechanics particles, which can have any energy....
s. The emitted energy is in the form of a photon.

The emittance
Emittance

Emittance may refer to:*Beam emittance*Thermal emittance...
 of an object quantifies how much light is emitted by it. This may be related to other properties of the object through the Stefan–Boltzmann law.

For most substances, the amount of emission varies with the temperature
Temperature

In physics, temperature is a physical property of a Physical system that underlies the common notions of hot and cold; something that feels hotter generally has the greater temperature....
 and the spectroscopic composition
Spectroscopy

Spectroscopy was originally the study of the interaction between radiation and matter as a function of wavelength . In fact, historically, spectroscopy referred to the use of visible light dispersed according to its wavelength, e.g....
 of the object, leading to the appearance of color temperature
Color temperature

Color temperature is a characteristic of visible light that has important applications in lighting, photography, videography, publishing, and other fields....
 and emission lines. Precise measurements at many wavelengths allow the identification of a substance via emission spectroscopy
Emission spectroscopy

Emission spectroscopy is a spectroscopy technique which examines the wavelengths of photons emitted by atoms or molecules during their transition from an excited state to a lower energy state....
.

See also

  • Emission spectrum
    Emission spectrum

    The emission spectrum of an Chemical element or Chemical compound is the relative intensity of electromagnetic radiation of each frequency Emission by atoms or molecules of that element or compound when they are excited....