[Physltest] [Phys-L] Re: Similarities in Physics; out of print, HARD to find

[Bernard Cleyet <anngeorg@PACBELL.NET>]

Now I remember, I hope, I have a pamphlet describing the experiments
published by the Bell System in the black hole garage.  UCB threw away
(I exaggerate.)  some wave sections. I grabbed one at the give away to
teachers a few years ago and several drivers.  I saw the movie as an
undergrad at UCSB in the fifties (second half).

RAFT (resource area for teachers in San Jose) sold vinyl? tape ($5 /
roll) an inch by v. ~ 0.1" -- thousand feet?  and children's version of
the knobbed sticks they use at foot ball games (one can see my memory's
gone).  To pkg. them the mfgr.  shipped in two threaded pieces.  By
punching holes in the tape and ... you get the idea.   Even more
impressive (than the Bell) was the model hanging from the ceiling of the
RAFT warehouse.  It was simple ... no sections with a change in the
spacing or cutting off the knobs.

bc, who would appreciate reading Hugh's instructions if he ever finds them.

p.s. I just realized the torsion k of the wave oscillator will change?
with the varying weight (height).  I didn't notice any change in the
speed tho.; should I have?

Hugh Logan wrote:

> Bernard Cleyet wrote:
>
>
>
> > you don't have a wave machine of our own?
>
> Not any more. I am retired. We did have a Shive wave machine at the
> Wentworth Institute of Technology, Boston, where I taught for 16 years
> before I retired. I don't know if it survived the flood
> in which the storage room for the more advanced physics equipment was
> inundated with about five feet of water not long after I retired. I
> heard they had a second similar flood when the street sewer system
> backed up again. Way back in 1976-1977, the father of one of my students
> at ChapelHill-Chauncy Hall School (an international school in Waltham,
> MA) worked for Bell Telephone Laboratories. I believe he knew or worked
> with Dr. Shive. In any case, he got the film that I referred to for us.
> We may have had the wave machine as well. Shive type wave machines are
> presently available from PASCO, but I think the original machines were
> more elaborate. They included flared sections for impedance matching.
> The movie I referred to showed just about everything. I can't find
> anything about it on the web. There are a few video clips if you search
> for "Shive wave machine video," some at NCSU, and there are references
> to it on Cinema Classics. Possibly, the Shive film was issued as one of
> the PSSC films, but I think we borrowed a copy from Bell Labs. Many
> physics departments still list the Shive wave machine experiment or demo
> on their web pages.
>
>
>
> > A vertical one is easily made.
>
> Somewhere, I saw instructions for making one a number of years ago.
>
> Hugh Logan
cut
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