Photovoltaik
In short
Photovoltaics is the method of turning sunlight directly into electricity using semiconducting materials. This process occurs within solar cells to power homes, businesses, and the national grid.
In plain words
Solar panels catch light from the sun and change it into a flow of electricity. This happens because certain materials react when light hits them. It is a clean way to make power without burning fuel.
A simple example
A small solar calculator uses a tiny strip of photovoltaic material to run its screen using only ambient light. A large solar farm uses thousands of these panels to supply electricity to a whole town.
Why it matters
It provides a renewable source of energy that does not produce greenhouse gases during operation. As technology improves, it helps reduce our reliance on fossil fuels and lowers electricity costs.
Easy to mix up
Do not confuse photovoltaics with solar thermal energy, which uses sunlight to heat water rather than making electricity.