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Photoresistor

en.wikipedia.org/wiki/Photoresistor

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 can have a res...

What Are Photocells Made of? | eHow

www.ehow.com/info_10045542_photocells-made-of.html

... a measurable electrical current; in others, it changes the electrical resistance. Practical photocells are made of these substances, including the elements...

How do photoelectric cells work? - Explain that Stuff

www.explainthatstuff.com/how-photoelectric-cells-work.html

Jan 27, 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 ...

Photocells

www.me.umn.edu/courses/me2011/arduino/technotes/photocell/photocell.html

Photocells. Photocells act as light sensors. Inlike infrared sensors that are good for line followers or detecting the presense of an object, photocells are good ...

Photocell | Define Photocell at Dictionary.com

www.dictionary.com/browse/photocell

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  ...

BBC - GCSE Bitesize: Photocells

www.bbc.co.uk/schools/gcsebitesize/science/ocr_gateway_pre_2011/living_future/1_collecting_energy1.shtml

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

Simple Homemade Photocell. - SparkBangBuzz

www.sparkbangbuzz.com/els/photocell-el.htm

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

www.creative-science.org.uk/solarcells.html

Solar cells can be made very thin and flexible and have even been fabricated into clothes ... A photo cell can be made by connecting wires to a small piece of ...

What is a Photocell? (with pictures)

www.wisegeek.org/what-is-a-photocell.htm

Aug 17, 2016 ... A photocell is a type of sensor that reacts to light or electromagnetic energy. ... A photoresistor may be either intrinsic, such as those made of ...

Photocell tutorial! - Instructables

www.instructables.com/id/Photocell-tutorial/

They are are often referred to a CdS cells (they are made of Cadmium-Sulfide), light-dependent resistors (LDR), and photoresistors.A Photocell is basically a ...

Answers
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 »
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