Читать книгу The Self-Sufficiency Handbook - Alan Bridgewater - Страница 52

Solar power is a term we use to describe various methods of using the light and heat of the sun to provide us with energy. There are many methods we can use to transform solar energy (see “Solar Options”).

We all know about the heat from the sun. In very basic terms, it is hotter at noon than at sunrise or sunset, and it is warmer at the equator than at the poles. The amount of solar energy that reaches Earth—and thereby reaches us—is determined by the angle at which sunlight strikes its target and by heat absorption. If we wear black clothes, we feel hot; if we wear white clothes, we feel cooler. Black absorbs more heat from the wavelengths in the sun’s spectrum than white. Some experts hold the opinion that dark matte green maximizes heat absorption even better than matte black.