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Solar Panels or Photovoltaics (PV) is a method of direct conversion of sunlight into electricity.
The heart of a PV system is the solar cell. The incident sunlight, i.e. electromagnetic radiation, on the solar cell initiates a physical response whereby the solar cells generate a direct current.
In general, a solar module is made up of 60 solar cells that are electrically connected together in the module and safely protected by a tough glass panel and a frame. Several modules together make up a powerful and efficient photovoltaic system. The electrical current produced at the terminals of the solar modules flows through the connected cable to the inverter,where it is converted to alternating current so that it can be used by electrical equipment.
The French physicist Alexandre Edmond Becquerel first discovered the so called "photoelectric effect" in 1839 and thus laid the foundation for today's efficient solar cells and the production of environmentally-friendly electricity from sunlight.