Photocell definition

Meaning, pronunciation, translations and examples. English dictionary definition of photocell. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. A secondary school revision resource for OCR GCSE Science about living for the future and collecting energy from the sun.

Used for photographic light meters, automatic on-at- dusk street lights and other light-sensitive applications, a photocell varies its resistance between its two terminals based on the amount of photons (light) it receives.

Also called a photodetector, photoresistor and light dependent resistor .

Abbreviation of photoelectric cell.

A device whose electrical characteristics, such as voltage, current, resistance, or capacitance, vary with incident light. All these things are examples of photoelectric cells (sometimes called photocells ) —electronic devices that generate electricity when light falls on them. What are they and how do they work? Definition from Wiktionary, the free dictionary. Help Contact Us Privacy Policy Copyright Notice.

A major application of photocells is in automatic lighting devices such as. The most common photo conductive cells these photodevices vary their electrical resistance when subjected to light. Meaning , pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Find out information about photocell.

Similar Words: photoelectric cell, photoconductive cell, electric eye, magic eye. Inlike infrared sensors that are good for line followers or detecting the presense of an object, photocells are good when you just want to detect light. The absorbed photons make electron–hole pairs in the depletion region.

Photocells act as light sensors. A photoresistor can be applied in light-sensitive detector circuits, and light-activated and dark-activated switching circuits. They are essentially light dependent resistors, because they have an output that is proportional to the amount of light that falls upon them.

Because of this effect, they are also known as photoresistorsors or light dependent resistors (LDRs). Define the illuminating power and intensity of illumination. Armenian proverb) Have faith and God will provide.

The phonons are excited according to the ambient temperature (which is very small compared to ω and consequently the phonon occupation is very small), and the occupation of the D-LUMO . DEFINITION OF TERMS: A photocell is defined for the purpose of classification in these subclasses as an electrical device which responds to light by varying its electrical characteristics or by generating an electric current. This definition therefore includes resistances, electric space discharge devices, batteries, inductances, .