Faraday's Butterfly Net Electricity & Magnetism_Circuits mechanical-advantage

mechanical-advantage

Acrylic bell-in-vacuum jar with an internal 4-6V DC electric bell that fades and falls silent as the enclosed air is removed

the shared mass isolating volume and density as the distinguishing variables across metals and polymers

5mm copper wire on a clear acrylic base support side-by-side comparison of how loop count multiplies the on-axis magnetic field at fixed current

Faraday's Butterfly Net Electricity & Magnetism_Circuits mechanical-advantageDemonstrates that charge resides only on the outer surface of a conductor by inverting the charged net inside out and showing the charge transferring to the new outside layer.