Solar Energy

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Solar energy is the light and radiant heat from the Sun that influences Earth's climate and weather and sustains life. Solar power is sometimes used as a synonym for solar energy or more specifically to refer to electricity generated from solar radiation. Since ancient times solar energy has been harnessed for human use through a range of technologies. Solar radiation along with secondary solar resources such as wind and wave power, hydroelectricity and biomass account for most of the available flow of renewable energy on Earth. Solar energy technologies can provide electrical generation by heat engine or photovoltaic means, space heating and cooling in active and passive solar buildings; potable water via distillation and disinfection, daylighting, hot water, thermal energy for cooking, and high temperature process heat for industrial purposes.

Of all the specific objects in our created world, the sun and planet Earth are the most crucial for the life and well-being of the human race. So a celebration of the sun's creation is a good moment to ask ourselves: what have we done with the sun's light, warmth, energy, in this past generation? What do we intend to do in the next generation?
Written during the Sun's last birthday in April 8, 1981 by
Arthur I. Waskow, taken from the book Seasons of our Joy