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Here's another from Sci. Am. (Sept. 1963)
"An inexpensive version of the Cavendish apparatus, modified to include
electrostatic shielding, has been constructed and used successfully for
evaluating G within 1 per cent of the currently accepted value by Sam
Epstein of Los Angeles.
Figure 3: Lower end of suspension
Epstein writes: "Essentially the Cavendish apparatus is a sensitive
torsion balance and a balance arm suspended at the middle by a slender
steel wire. ////
bc
Brian Whatcott wrote:
...
>Now that WAS a physics setup. Torsion to spare in fact.
>Which reminds me that I seem to recall that Cavendish discarded
>his first copper torsion wire as too compliant, allowing the arm
>to hit the draft-box.
>
>