On 05/13/2013 05:41 AM, BE Arnold wrote:
Mercury delay?
That would be cool, but I think schools might have a problem with that these days.
"Won't someone think of the CHILDREN!?"
One needn't actually DRINK the mercury (or even hold it in one's hand) in
order to demonstrate, or even look at, a mercury delay line. I'm willing to
bet that most of those schools have mercury-switch thermostats everywhere.
Every school I attended did.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA