Скачать или смотреть Are Calculators Solar Powered

Solar-powered calculators work the same way that other calculators work but use solar cells for power instead of batteries. Solar cells, also known as photovoltaic cells, take the sun's energy and turn it into electricity.Solar cells generally work well with natural sunlight, as most uses for solar-powered devices are outdoors or in space. Because artificial sources of light such as incandescent and fluorescent bulbs mimic the Sun's spectrum, solar cells can also work indoors, powering small devices such as calculators and watches.A 5kW solar system will generate approximately 20kWh per day, depending on your location and a variety of other factors. The average home in Australia uses about 16kWh per day.