It is defined as the amount of incident solar energy per unit area on a plane surface at the top of the atmosphere that is perpendicular to the rays of the sun. Please tell us where you read or heard it (including the quote, if possible). It is useful in determining the temperature of the sun with the help of Stefan-Boltzmann Law. irradiation are defined; we explain the origin of the energy emitted by the sun and reaching the ground and its amount as a function of the wavelength – the spectral ... is extraterrestrial irradiance E . The solar constant is used to quantify the rate at which energy is received upon a unit surface such as a solar panel. Send us feedback. the average rate at which radiant energy is received from the sun by the earth, equal to 1.94 small calories per minute per square centimeter of area perpendicular to the sun's rays, measured at a point outside the earth's atmosphere when the earth is … What is the number value for The Solar Constant? The solar constant is used to quantify the rate at which energy is received upon a unit surface such as a solar panel . Can you spell these 10 commonly misspelled words? Its value is about 1340W m−2. Solar constants are used in various atmospheric and geological sciences. Test Your Knowledge - and learn some interesting things along the way. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! The solar constant is the amount of power that the Sun deposits per unit area that is directly exposed to sunlight. Most people chose this as the best definition of solar-constant: The average density of so... See the dictionary meaning, pronunciation, and sentence examples. Define The Solar Constant. He's making a quiz, and checking it twice... Test your knowledge of the words of the year. ‘The heat shield will reach temperatures of up to 1800°C as it is exposed to energies 1000 times more intense than the solar constant.’ Solar constant definition, the average rate at which radiant energy is received from the sun by the earth, equal to 1.94 small calories per minute per square centimeter of area perpendicular to the sun's rays, measured at a point outside the earth's atmosphere when the earth is at its mean distance from the sun. La constante solar es la cantidad de energía que el Sol deposita por unidad de tiempo y superficie y que es directamente expuesta como luz solar. Definition of solar constant. See more. In practice, the unit area is 1 m squared (m 2). Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business. The Stefan-Boltzman constant can also be used as a means to calculate a solar constant. These small changes can affect Earth in a big way. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'solar constant.' Scientist refer to the amount of incoming energy from sunlight as "insolation". solar constant in American English. The solar constant, a measure of flux density, is the amount of incoming solar electromagnetic radiation per unit area that would be incident on a plane perpendicular to the rays, at a distance of one astronomical unit (AU) (roughly the mean distance from the Sun to the Earth). The entire spectrum of electromagnetic radiation is included in the measurement of a solar constant and not just that of visible light. According to the U.S. Department of Energy, “ solar pool heating is the most cost-effective use of solar energy in many climates.” Wondering how solar heated pools work?At its simplest, the technology uses a solar … One sun is defined to be equivalent to the irradiance of one solar constant, and the solar constant is defined as the irradiance of the sun on the outer atmosphere at a distance of 1 AU Traditionally, measuring the sun for PV applications has been achieved using a silicon solar cell because silicon (Si) cells are the most popular type. Copyright 1999 - 2020, TechTarget Does all of the energy emitted by the sun reach the Earth's surface? The solar constant (as defined for the planet Earth) is the power collected at the top of the atmosphere by a unit area perpendicular to the light path. The solar constant also drifts by 0.2% to 0.6% over many centuries, according to scientists who study tree rings. 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