An aluminum slug melts and levitates at the same time

Run an alternating current through a coiled length of pig and you ’ll produce a levitation piston chamber . cast off a bar of aluminium in and you ’ve got yourself some hovering metal . But leave the metal there too long …

The affair about this levitation cylinder is that it double asan trigger heater . In a nutshell : the current coursing through the copper ( which has been coil to form asolenoid ) creates an alternating magnetic playing field . The magnetic field of study induces a special strain of electrical flow ( live as eddy currents ) in the hovering piece of aluminum . These eddy currents give rise a phenomenon , called Joule heating , that , with enough power , can cause the metal to become very , very red-hot , as it does here .

Hands - on enthusiasts can finda very in - depth tutorial on how to make the coil like the one see in the video , which work at 1.6 kilowatts , here . Towards the ending of the tutorial you ’ll find oneself instructions on how to make a 10kW coil that can levitate and suspend molten copper color and blade , which are denser than the aluminum in the telecasting .