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Added 5 months ago from karan
The Fifty-Cent Arc Welder
The quarters, because they are mostly copper (over ninety percent), conduct electricity easily. They offer an easy path for the electricity to make its jump. Even better,... More» because quarters are clad in nickel the sides are made of nickel while the core is copper the electricity passes through the copper core focusing the electrical discharge towards the thin edge of the quarters. This narrows the point of release, creating a more powerful electrical arc
Categories:	Inventions, Principles of Science and Engineering , Everyday Engineering
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