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Electromagnetism is a cool (and useful) natural phenomenon. Electric current, which is the flow of electrons, creates its own magnetic field when in a closed loop. In conjunction with other magnets or other current-induced magnetic fields, you can use electromagnetism to power electric motors or launch a non-magnetic ring into the sky!An Elihu Thomson apparatus, also known as a ring launcher, is named for the engineer and inventor Elihu Thomson who studied alternating current. A ring launcher has a coil wound around an iron center. The coil is charged with current until it launches the ring into the air.What material will a ring launcher toss highest?
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Fecha publicación: 12.5.2016
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