Our high school science teacher went to school in the late 1950s. He told us his science teacher used to demonstrate that you could plunge your hand into a cont

Our high school science teacher went to school in the late 1950s. He told us his science teacher used to demonstrate that you could plunge your hand into a container of mercury and swirl it around, just lovely stuff... until one day his gold wedding ring snapped in half, because the mercury had degraded it.