Electromagnetic Ring Launcher
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.
Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. Implementation of any Science Project Idea should be undertaken only in appropriate settings and with appropriate parental or other supervision. Reading and following the safety precautions of all materials used in a project is the sole responsibility of each individual. For further information, consult your state's handbook of Science Safety.