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Solar Lights Information
Solar dictionary definition: of or relating to the sun, using or operated by energy from the sun, relating to or derived from the sun or utilizing the energies of the sun. From sol the sun.
Solar cell: operating by or utilising the sun.
c.1450, from L. solaris of the sun.
Adjective: solar energy - having to do with, powered by, or influenced by, the sun
How solar energy works
Quick explanation:
Solar panels absorb photons from the sun/sunlight. Electrons which are negatively charged dislodge from atoms to flow and produce electricity. Positive charges are created (called holes) that flow in the opposite direction through the solar panel (semiconductor). This converts solar energy into direct current (DC) electricity.
Long explanation:
Solar cell or photovoltaic (relates to applications of solar energy and solar cells) converts solar energy into electricity by the photovoltaic effect. Photovoltaic comes from the Greek φ?ς:phos: which means "light", and "voltaic" = means electrical. The Italian physicist Volta named the measurement unit volt. First used in 1850’s it was French physicist Alexandre-Edmond Becquerel that first recognised photovoltaic effect. The first solar cells was built by Charles Fritts by coating a semiconductor selenium with gold in a very thin layer in 1883. Photovoltaic cells are made of semiconductors, generally silicon. Sunlight is absorbed within the semiconductor. Electrons are knocked loose to flow freely. The photovoltaic cells have electric fields to direct loose electrons to flow in one direction to form a current. By positioning contacts (usually metal) on top and bottom of the photovoltaic cells the current can drawn off to be used externally. By assembling cells to produce solar modules and linking photovoltaic arrays to generate renewable form of electricity. These can be used to power electronic devices such as solar pillar lights
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