In contrast, prunes' reputation for being rich in iron doesn't hold true. In reality, they're a decent, but not spectacular, source. Prunes, however, get overlooked as a source of vitamin A, even though they provide more than ten percent of recommended levels.
Solar cell. A solar cell, or photovoltaic cell (previously termed solar battery), is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon.
Report Abuse. They use solar energy. More specifically, they use solar cells. A solar cell is a semiconductor device that converts photons from the sun into electricity. The general term for a solar cell including both solar and non-solar sources of light is termed a photovoltaic cell.