Good Friday 2018 is on Friday, March 30, 2018 (in 348 days). Good Friday 2017 has already passed: it was on Friday, April 14, 2017 (2 days ago).
What is solar energy? Solar energy is, simply, energy provided by the sun. This energy is in the form of solar radiation, which makes the production of solar electricity possible. Electricity can be produced directly from photovoltaic, PV, cells.
The size of the sun determines its temperature and the amount of energy radiated. Electromagnetic energy from the sun comes to Earth in the form of radiation. The term radiation simply denotes the fact that the energy travels as rays, that is, in straight lines. In general, the terms solar energy and solar radiation simply refer to energy from the sun. Electromagnetic energy is produced when electric charges change their potential energy. It is characterized by the property that it is pure energy, not requiring any matter (or medium) for its existence or movement.