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Image Credit
/-/https/www.sciencebuddies.org/cdn/Files/4989/14/Elec_p014_Figure8.png)
Description:
A washer and screw are inserted into a wooden block that has Fahnestock clips and a wire-wrapped cardboard tube glued to it
Author:
created by Ben Finio for Science Buddies
Source:
Science Buddies
License:
Science Buddies
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/-/https/img.youtube.com/vi/A0FuVMHMyZE/0.jpg)
/-/https/img.youtube.com/vi/GDROkh1zlr8/0.jpg)