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Homemade bimetallic strips - Thermostat demonstration // Homemade Science with Bruce Yeany

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 Physics   |   Science
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Bimetallic strips bend due to the uneven expansion of two bonded metals. In this video, we are taking a look at making what I call bimaterial strips. Aluminum glued to paper will behave the same way as bimetallic strips and can be used to making a light bulb blink on and off. The frequency of blinking can vary according to the type of bulbs used, the amount of heat they produce, the construction of the strips and how close the strips are to the heat source. Generally, the time needed to blink on and off can ranges about 20 to 30 seconds.

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