Thermal radiation

Recall concepts and phenomena from the 8th grade light education course. Answer the question.

Heat radiation among other types of radiation

Find heat radiation in the figure!

Thermal radiation

All bodies, regardless of their material or temperature, emit thermal radiation. The higher the body temperature, the more thermal radiation the body emits per unit of time.

Light as energy

Valguse kätte jäetud esemed soojenevad. Pikaks ajaks päikese kätte jäetud esemed pleekuvad. Päikesepatareisid kasutatakse elektrienergia saamiseks. Millise energia arvel need protsessid toimuvad?