[time-nuts] How dangerous if a Rb lamp broken?

[Chuck Harris]

The dial is painted, the hands are actually metal frame, and the
luminous paint is a wax that is put on the hand kind of like a
soap bubble.

The luminous material in the paint is very dead, as the hands and
digits no longer glow at all.  I guess there is a limit to how long
ZnS:Cu can take the exposure and still glow.

-Chuck Harris

Tom Miller wrote:
> I wonder what that is? How come the digits don't show the same burn that the hands
> do? They certainly remained in the same position for longer than the hands.
>
> Hmmm?
>
> Tom
>