An experiment was carried out to determine the effect of magnets on a quarter.
This is a Besselheim plate, for performing science. It is 10 cm long.
The Besselheim plate comes from the Calcium and Sulphur episodes of Look Around You, created by Robert Popper and Peter Serafinowicz.
10 w x
5.178 d x
3.937 w x
2.039 d x