Get it on Google Play
New! Download Unionpedia on your Android™ device!
Faster access than browser!

Solar constant

Index Solar constant

The solar constant is a flux density measuring mean solar electromagnetic radiation (solar irradiance) per unit area. [1]

46 relations: Angular diameter, Apparent magnitude, Astronomical unit, Atmosphere of Earth, Charles Greeley Abbot, Claude Pouillet, Committee on Data for Science and Technology, Cross section (geometry), Earth, Electromagnetic radiation, Electromagnetic spectrum, Faint young Sun paradox, Flux, Formation and evolution of the Solar System, Inverse-square law, Irradiance, Jules Violle, Kilo-, Langley (unit), Latitude, Light, List of articles related to the Sun, List of solar cycles, Mont Blanc, Mount Whitney, Orbital eccentricity, Perihelion and aphelion, Physical constant, Planck constant, Pyrheliometer, Radian, Radiation pressure, Samuel Pierpont Langley, Solar cycle, Solar irradiance, Solar Radiation and Climate Experiment, Solar wind, Solid angle, Speed of light, Stellar evolution, Steradian, Sun, Sunlight, Sunspot, Surface area, Watt.

Angular diameter

The angular diameter, angular size, apparent diameter, or apparent size is an angular measurement describing how large a sphere or circle appears from a given point of view.

New!!: Solar constant and Angular diameter · See more »

Apparent magnitude

The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.

New!!: Solar constant and Apparent magnitude · See more »

Astronomical unit

The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.

New!!: Solar constant and Astronomical unit · See more »

Atmosphere of Earth

The atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity.

New!!: Solar constant and Atmosphere of Earth · See more »

Charles Greeley Abbot

Charles Greeley Abbot (May 31, 1872 – December 17, 1973) was an American astrophysicist and the fifth secretary of the Smithsonian Institution, serving from 1928 until 1944.

New!!: Solar constant and Charles Greeley Abbot · See more »

Claude Pouillet

Claude Servais Mathias Pouillet (16 February 1790 – 14 June 1868) was a French physicist and a professor of physics at the Sorbonne and member of the French Academy of Sciences (elected 1837).

New!!: Solar constant and Claude Pouillet · See more »

Committee on Data for Science and Technology

The Committee on Data for Science and Technology (CODATA) was established in 1966 as an interdisciplinary committee of the International Council for Science.

New!!: Solar constant and Committee on Data for Science and Technology · See more »

Cross section (geometry)

In geometry and science, a cross section is the non-empty intersection of a solid body in three-dimensional space with a plane, or the analog in higher-dimensional spaces.

New!!: Solar constant and Cross section (geometry) · See more »


Earth is the third planet from the Sun and the only astronomical object known to harbor life.

New!!: Solar constant and Earth · See more »

Electromagnetic 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-time, carrying electromagnetic radiant energy.

New!!: Solar constant and Electromagnetic radiation · See more »

Electromagnetic spectrum

The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies.

New!!: Solar constant and Electromagnetic spectrum · See more »

Faint young Sun paradox

The faint young Sun paradox or faint young Sun problem describes the apparent contradiction between observations of liquid water early in Earth's history and the astrophysical expectation that the Sun's output would be only 70 percent as intense during that epoch as it is during the modern epoch.

New!!: Solar constant and Faint young Sun paradox · See more »


Flux describes the quantity which passes through a surface or substance.

New!!: Solar constant and Flux · See more »

Formation and evolution of the Solar System

The formation and evolution of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud.

New!!: Solar constant and Formation and evolution of the Solar System · See more »

Inverse-square law

The inverse-square law, in physics, is any physical law stating that a specified physical quantity or intensity is inversely proportional to the square of the distance from the source of that physical quantity.

New!!: Solar constant and Inverse-square law · See more »


In radiometry, irradiance is the radiant flux (power) received by a surface per unit area.

New!!: Solar constant and Irradiance · See more »

Jules Violle

Jules Louis Gabriel Violle (16 November 1841, Langres, Haute-Marne – 12 September 1923, Fixin, Bourgogne-Franche-Comté) was a French physicist and inventor.

New!!: Solar constant and Jules Violle · See more »


Kilo is a decimal unit prefix in the metric system denoting multiplication by one thousand (103).

New!!: Solar constant and Kilo- · See more »

Langley (unit)

The langley (Ly) is a unit of heat transmission, especially used to express the rate of solar radiation (or insolation) received by the earth.

New!!: Solar constant and Langley (unit) · See more »


In geography, latitude is a geographic coordinate that specifies the north–south position of a point on the Earth's surface.

New!!: Solar constant and Latitude · See more »


Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.

New!!: Solar constant and Light · See more »

List of articles related to the Sun

Articles related to the Sun include.

New!!: Solar constant and List of articles related to the Sun · See more »

List of solar cycles

The following is a list of solar cycles (sometimes called sunspot cycles), tracked since 1755 following the original numbering proposed by Rudolf Wolf in the mid-19th centuryKane, R.P. (2002).

New!!: Solar constant and List of solar cycles · See more »

Mont Blanc

Mont Blanc (Monte Bianco), meaning "White Mountain", is the highest mountain in the Alps and the highest in Europe west of Russia's Caucasus peaks.

New!!: Solar constant and Mont Blanc · See more »

Mount Whitney

Mount Whitney is the tallest mountain in California, as well as the highest summit in the contiguous United States and the Sierra Nevada—with an elevation of.

New!!: Solar constant and Mount Whitney · See more »

Orbital eccentricity

The orbital eccentricity of an astronomical object is a parameter that determines the amount by which its orbit around another body deviates from a perfect circle.

New!!: Solar constant and Orbital eccentricity · See more »

Perihelion and aphelion

The perihelion of any orbit of a celestial body about the Sun is the point where the body comes nearest to the Sun.

New!!: Solar constant and Perihelion and aphelion · See more »

Physical constant

A physical constant, sometimes fundamental physical constant or universal constant, is a physical quantity that is generally believed to be both universal in nature and have constant value in time.

New!!: Solar constant and Physical constant · See more »

Planck constant

The Planck constant (denoted, also called Planck's constant) is a physical constant that is the quantum of action, central in quantum mechanics.

New!!: Solar constant and Planck constant · See more »


A pyrheliometer is an instrument for measurement of direct beam solar irradiance.

New!!: Solar constant and Pyrheliometer · See more »


The radian (SI symbol rad) is the SI unit for measuring angles, and is the standard unit of angular measure used in many areas of mathematics.

New!!: Solar constant and Radian · See more »

Radiation pressure

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

New!!: Solar constant and Radiation pressure · See more »

Samuel Pierpont Langley

Samuel Pierpont Langley (August 22, 1834 – February 27, 1906) was an American astronomer, physicist, inventor of the bolometer and aviation pioneer.

New!!: Solar constant and Samuel Pierpont Langley · See more »

Solar cycle

The solar cycle or solar magnetic activity cycle is the nearly periodic 11-year change in the Sun's activity (including changes in the levels of solar radiation and ejection of solar material) and appearance (changes in the number and size of sunspots, flares, and other manifestations).

New!!: Solar constant and Solar cycle · See more »

Solar irradiance

Solar irradiance is the power per unit area received from the Sun in the form of electromagnetic radiation in the wavelength range of the measuring instrument.

New!!: Solar constant and Solar irradiance · See more »

Solar Radiation and Climate Experiment

The Solar Radiation and Climate Experiment (SORCE) is a NASA-sponsored satellite mission that measures incoming X-ray, ultraviolet, visible, near-infrared, and total solar radiation.

New!!: Solar constant and Solar Radiation and Climate Experiment · See more »

Solar wind

The solar wind is a stream of charged particles released from the upper atmosphere of the Sun, called the corona.

New!!: Solar constant and Solar wind · See more »

Solid angle

In geometry, a solid angle (symbol) is a measure of the amount of the field of view from some particular point that a given object covers.

New!!: Solar constant and Solid angle · See more »

Speed of light

The speed of light in vacuum, commonly denoted, is a universal physical constant important in many areas of physics.

New!!: Solar constant and Speed of light · See more »

Stellar evolution

Stellar evolution is the process by which a star changes over the course of time.

New!!: Solar constant and Stellar evolution · See more »


No description.

New!!: Solar constant and Steradian · See more »


The Sun is the star at the center of the Solar System.

New!!: Solar constant and Sun · See more »


Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light.

New!!: Solar constant and Sunlight · See more »


Sunspots are temporary phenomena on the Sun's photosphere that appear as spots darker than the surrounding areas.

New!!: Solar constant and Sunspot · See more »

Surface area

The surface area of a solid object is a measure of the total area that the surface of the object occupies.

New!!: Solar constant and Surface area · See more »


The watt (symbol: W) is a unit of power.

New!!: Solar constant and Watt · See more »

Redirects here:

Solar Constant, Solar Illuminance Constant, Solar illuminance constant.


[1] https://en.wikipedia.org/wiki/Solar_constant

Hey! We are on Facebook now! »