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What Are Photocells Made of?
When light shines on an object, the energy in the light stirs up the atoms in the material. In a few substances, the electrons in the atoms move enough to generate a measurable electrical current; in others, it changes the electrical... More »
Source: www.ehow.com

Photoresistor - Wikipedia


A photoresistor is a light-controlled variable resistor. The resistance of a photoresistor ... A photoresistor is made of a high resistance semiconductor. In the dark, a photoresistor ... Large CdS ...

What Are Photocells Made of? | eHow


... the electrical resistance. Practical photocells are made of these substances, including the elements... ... Most solar panels are made of the element silicon.

BBC - GCSE Bitesize: Photocells


A secondary school revision resource for OCR GCSE Science about living for the future and collecting energy from the sun.

How do photoelectric cells work? - Explain that Stuff


Nov 29, 2016 ... Photo: A solar panel made from photovoltaic cells. ... detects how much light is reflected back with a photocell, and then sifts the pupa into one ...

Photocell | Define Photocell at Dictionary.com


Photocell definition, a solid-state device that converts light into electrical energy by producing a voltage, as in a photovoltaic cell, or uses light to regulate the flow  ...

How does a photocell work? | Reference.com


A photocell is made up of a semiconductor, the working of which is dependent on the intensity of incident light. When the amount of light exceeds a certain ...

Simple Homemade Photocell. - SparkBangBuzz


Sep 12, 2003 ... This is a copper oxide photocell and is very simple to make using materials ... One photocell that I made could give a whopping 50 mv increase ...

Solar cells - The Creative Science Centre - by Dr Jonathan P. Hare


Solar cells can be made very thin and flexible and have even been fabricated into clothes and tent ... Photo cells are useful for light meters and light switches.