What are solar-derived products?

Solar water heaters, solar lamps, etc. Solar energy refers to the energy of thermal radiation from the sun, which is used to generate electricity or provide energy for water heaters. Derivative products include solar water heaters, solar lights, solar cells, solar fan caps, solar electric fans, solar flashlights. solar chargers and cars. The main forms of solar energy utilization include photothermal conversion, photoelectric conversion and photochemical conversion of solar energy.

As the picture shows, there is a solar fan hat. There is a solar panel on the top of the hat and a small electric fan on the brim. Panels in the sun

Solar cells absorb solar energy and convert solar energy into electrical energy. When the small fan turns, it consumese electrical energy and converts electrical energy into mechanical energy, as objects with black surfaces are more susceptible. To absorb solar radiation energy, solar energy The surface of the battery panel should be black.

So the answer is: electric; mechanical black;