Part 6/13:
Copper Plates:
A significant milestone occurs when Paul substitutes aluminum with copper plates, totaling about half an inch in thickness (two 1/4-inch plates). The coil, activated over this copper surface, achieves a stable levitation height close to 1.75 inches, noticeably higher than aluminum counterparts. Cuprous material's superior conductive and magnetic properties likely contribute to better magnetic coupling, enabling higher levitation.
Further Experiments with Copper:
He experiments with multiple thin copper layers and notes that copper’s higher purity and conductivity make it superior for levitation purposes. These results support the hypothesis that using copper enhances magnetic field interaction, resulting in better levitation stability and height.