Photocell: meaning, definitions and examples
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photocell
[ หfoส.tษส.sษl ]
electrical device
A photocell is a device that converts light energy into electrical energy. It is commonly used in outdoor lighting systems to automatically turn lights on at dusk and off at dawn based on ambient light levels.
Synonyms
light sensor, light-dependent resistor, photoresistor.
Examples of usage
- The street lights turn on automatically thanks to the photocell.
- A photocell helps conserve energy by only operating lights when necessary.
- Photocells are often used in solar garden lights for efficiency.
Translations
Translations of the word "photocell" in other languages:
๐ต๐น fotocรฉlula
๐ฎ๐ณ เคซเฅเคเฅเคธเฅเคฒ
๐ฉ๐ช Fotowiderstand
๐ฎ๐ฉ fotocell
๐บ๐ฆ ัะพัะพะตะปะตะผะตะฝั
๐ต๐ฑ fotokomรณrka
๐ฏ๐ต ใใฉใใปใซ
๐ซ๐ท photocell
๐ช๐ธ fotosensor
๐น๐ท fotocell
๐ฐ๐ท ํฌํ ์
๐ธ๐ฆ ุฎูุงูุง ุถูุฆูุฉ
๐จ๐ฟ fotobuลka
๐ธ๐ฐ fotobunka
๐จ๐ณ ๅ ็ตๆฑ
๐ธ๐ฎ fotocelica
๐ฎ๐ธ ljรณsfruma
๐ฐ๐ฟ ัะพัะพัะปะตะผะตะฝั
๐ฌ๐ช แคแแขแแกแแแ
๐ฆ๐ฟ fotocell
๐ฒ๐ฝ fotocelda
Etymology
The term 'photocell' comes from the combination of 'photo' meaning 'light' and 'cell' referring to a basic unit of a system. The use of photocells dates back to the early 20th century when the technology for converting light into electrical energy was developed. Photocells utilize the photoelectric effect, a phenomenon that was first observed by Heinrich Hertz in the late 1800s. This principle was further explored by notable scientists like Albert Einstein, who explained how light could release electrons from materials. The practical applications of photocells have grown significantly since then, expanding from basic lighting to various fields including solar energy, security systems, and industrial automation.