In physics, and in particular as measured by radiometry, radiant energy is the energy of electromagnetic and gravitational radiation.wikipedia
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electromagnetic waveelectromagnetic waveselectromagnetic
In physics, and in particular as measured by radiometry, radiant energy is the energy of electromagnetic and gravitational radiation.
In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space, carrying electromagnetic radiant energy.

Gravitational wave

In physics, and in particular as measured by radiometry, radiant energy is the energy of electromagnetic and gravitational radiation.

Energy

energy transferenergiestotal energy
In physics, and in particular as measured by radiometry, radiant energy is the energy of electromagnetic and gravitational radiation.
Common forms of energy include the kinetic energy of a moving object, the potential energy stored by an object's position in a force field (gravitational, electric or magnetic), the elastic energy stored by stretching solid objects, the chemical energy released when a fuel burns, the radiant energy carried by light, and the thermal energy due to an object's temperature.

The quantity of radiant energy may be calculated by integrating radiant flux (or power) with respect to time.
In radiometry, radiant flux or radiant power is the radiant energy emitted, reflected, transmitted or received, per unit time, and spectral flux or spectral power is the radiant flux per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength.

absorptionabsorbedabsorb
When EM waves are absorbed by an object, the energy of the waves is converted to heat (or converted to electricity in case of a photoelectric material).
In physics, absorption of electromagnetic radiation is how matter (typically electrons bound in atom s) takes up a photon's energy — and so transforms electromagnetic energy into internal energy of the absorber (for example, thermal energy).

Infrared

IRnear-infraredinfra-red
Often this phenomenon is associated particularly with infrared radiation, but any kind of electromagnetic radiation will warm an object that absorbs it.
As with all EMR, IR carries radiant energy and behaves both like a wave and like its quantum particle, the photon.

Greenhouse gas

greenhouse gasescarbon emissionsgreenhouse gas emissions
In geophysics, most atmospheric gases, including the greenhouse gases, allow the Sun's short-wavelength radiant energy to pass through to the Earth's surface, heating the ground and oceans.
A greenhouse gas (sometimes abbreviated GHG) is a gas that absorbs and emits radiant energy within the thermal infrared range.

Heating by radiant energy is observed every day, the warmth of the sunshine being the most commonly observed example.

Open system (systems theory)

open systemopen systemsopen
Radiant energy is one of the mechanisms by which energy can enter or leave an open system.
One type of open system is the radiant energy system, which receives its energy from solar radiation – an energy source that can be regarded as inexhaustible for all practical purposes.

Sunlight

It can be generated electrically by infrared lamps, or can be absorbed from sunlight and used to heat water.
Sunlight is a key factor in photosynthesis, the process used by plants and other autotrophic organisms to convert light energy, normally from the Sun, into chemical energy that can be used to synthesize carbohydrates and to fuel the organisms' activities.

Luminous energy

light energy
Luminous energy is not the same as radiant energy, the corresponding objective physical quantity.

Physics

physicistphysicalphysicists
In physics, and in particular as measured by radiometry, radiant energy is the energy of electromagnetic and gravitational radiation.

In physics, and in particular as measured by radiometry, radiant energy is the energy of electromagnetic and gravitational radiation. The term "radiant energy" is most commonly used in the fields of radiometry, solar energy, heating and lighting, but is also sometimes used in other fields (such as telecommunications).

Joule

JkJMJ
As energy, its SI unit is the joule (J).

Integral

integrationintegral calculusdefinite integral
The quantity of radiant energy may be calculated by integrating radiant flux (or power) with respect to time.

Time

temporaldurationsequence of events
The quantity of radiant energy may be calculated by integrating radiant flux (or power) with respect to time.

Solar energy

solarsolar-poweredsolar powered
The term "radiant energy" is most commonly used in the fields of radiometry, solar energy, heating and lighting, but is also sometimes used in other fields (such as telecommunications).

Heating, ventilation, and air conditioning

HVACheatingclimate control
The term "radiant energy" is most commonly used in the fields of radiometry, solar energy, heating and lighting, but is also sometimes used in other fields (such as telecommunications).

Lighting

illuminationartificial lightartificial lighting
The term "radiant energy" is most commonly used in the fields of radiometry, solar energy, heating and lighting, but is also sometimes used in other fields (such as telecommunications).

Telecommunication

telecommunicationscommunicationstelecom
The term "radiant energy" is most commonly used in the fields of radiometry, solar energy, heating and lighting, but is also sometimes used in other fields (such as telecommunications).

First observation of gravitational waves

GW150914direct detection of gravitational wavesdirectly detected
For example, the first gravitational waves ever observed were produced by a black hole collision that emitted about 5.3 joules of gravitational-wave energy.

Photon

photonslight quantaincident photon
Because electromagnetic (EM) radiation can be conceptualized as a stream of photons, radiant energy can be viewed as photon energy – the energy carried by these photons.

Photon energy

photon energiesenergyenergetic
Because electromagnetic (EM) radiation can be conceptualized as a stream of photons, radiant energy can be viewed as photon energy – the energy carried by these photons.

Quantum field theory

quantum field theoriesquantum fieldquantum theory
These two views are completely equivalent and are reconciled to one another in quantum field theory (see wave-particle duality).

Wave–particle duality

wave-particle dualityparticle theory of lightwave nature
These two views are completely equivalent and are reconciled to one another in quantum field theory (see wave-particle duality).