NIGHT AT THE OPERA: Iron bedsprings could serve not only as the antenna but as the base for the detector in a crystal radio. In fact, crystal radios were so simple they could be dressed up in any number of ways, including a top hat and tails. In this Grafton China Works radio, made in Britain circa 1924, the coil winds around the hat and the crystal is a shirt stud.
The Conversation (0)
