Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A resistor, used in certain photoelectric cells, whose resistance varies as a function of the intensity of light it is exposed to.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun An
electronic component whoseresistance isinversely proportional to theintensity of incidentlight ; aphotoconductor
Etymologies
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Examples
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In most 'automatic'-mode strobes, the photoresistor controls a short-duration timer which drives a trigger circuit for the thyristor.
RadioPopper JrX Will Make You Fat and Happy [Full Review] 2009
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She recently built an "optical encoder," a photoresistor she programmed to count flashes of light.
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It outputs a squarewave whose pitch is controlled by the amount of light striking a photoresistor.
Boing Boing 2010
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If you aren't happy about your housemates sneaking around your room, maybe you could give the laser tripwire project a try, as it involves hooking up a laser pointer, a photoresistor, and a webcam together, creating a laser tripwire that will capture a photo of the intruder and upload a link to the photo on Twitter.
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If you want to use stock components, then you can take a standard LED and photoresistor, (
Make - All Discussions DParfitt 2010
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