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An electronic photometer
This circuit will indicate the amount of light falling on the photosensitive resistor. As more light is picked up, the resistance is lower and more current may flow through the circuit
[WARNING: Build and operate this circuit at your own risk! The author accepts NO RESPONSIBILITY for injury, loss of life or any form of damage caused as a result of following the instructions on this page. While this circuit is probably safe to operate, you should not attempt to use it without first having an understanding of electronics. This circuit HAS NOT BEEN TESTED and is not guaranteed to work correctly if at all]
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Contents
Photometer