[stayathomemom]

My high school physics teacher in 1974 had a piece of red Fiesta Ware that he used a geiger counter on. It made a lot of noise! Needless to say, that color had been discontinued years before.

[r9etb]

My high school physics teacher in 1974 had a piece of red Fiesta Ware that he used a geiger counter on. It made a lot of noise! Needless to say, that color had been discontinued years before.

Yup. Uranium Dioxide glaze. My physics teacher had the same sort of bowl and did the same demo. Perhaps we even had the same fellow.

[Little Ray]

Seen that. Its Alpha particles, not particularly dangerous.

There is also a blue color called “cobalt blue” than can set off a Geiger counter.

[kidd]

There is lots of radioactivity around the home.

Each and every smoke detector has Americium-241.

Salt substitutes contain potassium...of which 0.01% contains naturally radioactive potassium-40.

Lantern mantles contain radium, as do some watch hands.

The human body has over 100 grams of potassium-40 and emits over 4000 beta particles per second.

[EggsAckley]

Um.........I think I have a piece or two of Fiesta Ware someplace. It used to be my favorite casserole dishes.

Uh oh.