fotokennotekniikan
Fotokennotekniikan, a Finnish term, translates to "photocell technology" in English. It refers to the field of study and application of photoelectric cells, also known as photocells or light-dependent resistors (LDRs). These are electronic components that change their electrical resistance in response to incident light. In simpler terms, they become more conductive when light shines on them and less conductive in the dark.
The fundamental principle behind photocell technology is the photovoltaic effect or the photoconductive effect. Photovoltaic cells
Common applications of fotokennotekniikan include automatic lighting systems, where photocells detect ambient light levels to turn