1) Beginning at one end, wrap the wire neatly around the nail. You may tape this in place if you like but it is not necessary for it to work. See illustration below. 2) Expose the ends of the wire by ...

Recently, I finished another simple version of my electromagnetic levitation demo device that levitates a small object under an electromagnet. What makes it different from my earlier model is the ...

In everyday life, we use magnets in a variety of ways, from holding notes on a refrigerator to securely locking a safe or a cabinet door. Electromagnets are especially useful because the magnetic ...