My teenage children are mad about rock ‘n’ roll. I don’t mind, but between them they have socks, pullovers and slacks which are fluorescent, and I am worried in case these are harmful to their health. Surely things that are luminous in the dark are usually radioactive, which, I take it, could be dangerous.

You’ll be relieved to know that these clothes, so popular with teenagers (particularly the rock ‘n’ rollers), have been tested for radioactivity, and there is none. So there should be no danger at all, except to anyone who is sensitive to the kinds of colours they select!

— Woman’s Realm, April 12, 1958