Abnormal areas of tissue are removed using a thin, wire loop that works like a scalpel. An electric current is passed through the loop as it removes the abnormal tissue, cauterizing the blood vessels ...

[David]’s loop ended up being 240 meters of 20-gauge copper wire in the attic above the meeting room. The impedance ended up close to 8 ohms, perfect for feeding directly from the speaker ...

Wrapping that loop around a support line two or three times forces the ring to hang at the same angle as the wire. When an IR lamp ... could navigate tracks as thin as a human hair or thick ...