photocell

• جهاز يحوّل الضوء أو الإشعاع الكهرومغناطيسي إلى إشارة كهربائية، ويُستخدم للكشف عن الضوء وقياس شدته.

A transducer used to detect and measure light and other radiations.

1. Light detection deviceC1formalscientific

   A transducer that converts light energy into electrical energy, used to detect and measure light or other electromagnetic radiation.

   خلية ضوئية

   • The photocell in the street lamp automatically turns the light on at dusk.
   • Solar panels use photocells to convert sunlight into electricity.
   • The security system uses a photocell to detect movement in the dark.