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Article | REF: D3935 V2

Photovoltaic electricity and energy transition: From sunlight to PV generator

Author: Stéphan ASTIER

Publication date: September 10, 2021

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2. The Sun and the Earth: thermodynamic situation, renewable energies

The Sun is a "small star" with magnitude M = 4.83, radius R S = 696,000 km and mass 1.99 × 10 30 kg. Its core, at a temperature of around 15 million degrees, is the permanent site of thermonuclear fusion reactions. The energy released is evacuated into space by electro-magnetic radiation, the spectrum of which is shown in figure 5 .

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The Sun and the Earth: thermodynamic situation, renewable energies
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