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The fan is an electrical appliance using the principles of a motor.

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Blue light enables you to see blades of fan on high

My son has a ceiling fan in his room and one Christmas, while he had blue snowflake lights strung up, we noticed that if we turned the fan on high with the blue lights on, we could see every blade. … This is almost along the same lines as this post, but we've figured out a way for the eye to not see the blades as transparent: Why does a moving fan seem transparent? Thanks in advance …
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