"Roger Long" wrote in news:46f53eef$0$5006
:

My father won a science fair doing this back in the 1930's.

--
Roger Long


Was his real name Don Herbert and he worked for GE?...

Larry
--
I don't think I ever missed a Mr Wizard TV show. Of course, if you put the
same shows on, today, Mr Wizard would be so far over the heads of the kids
with less than Master's Degrees.....they couldn't follow along...(c;