Re: Heating tape

[brian whatcott <inet@intellisys.net>]

At 16:13 10/10/98 -0400, Herb Gottlieb wrote:
> ...If a 10 cm specimen is heated slowly and 
> uniformly from room temperature to 30 degrees above room
> temperature, there should be no problem counting the 
> 45 fringes that shift during the heating process.
>
> Using copper heat pipe sounds interesting. Any idea of the 
> cost of a 20 cm length?? Where can such a sample be obtained??
>
> Herb Gottlieb from New York City
> (Where our local plumbing stores carry heat tapes)
I had it in mind that Herb's local plumbing stores carry
copper pipe and end caps and a compression tee for a tube to a 
vaccuum pump. I imagine a wick could be provided from any material 
currently at hand, and a little distilled water would complete 
the concoction.

 I will freely admit however, that my supposition that a heat pipe 
is easily manufactured is just that; a supposition.

I don't see how 10 cm of copper raised 30K provides 45 fringe 
changes from the double traverse of an M-M interferometer arm...


brian whatcott <inet@intellisys.net>
Altus OK