On Mon, 22 Jul 2019 at 22:54, Alex Pummer <[email protected]> wrote: > how about silk? > > KJ6UHN Alex
I would have thought silk would just absorb moisture, lowering its electrical resistance. I do have an Agilent high resistance meter that in theory can measure up to 16 Peta ohm, but in practice I think noise becomes very significant, even though it has a 1 kV source. > > > On 7/22/2019 1:02 PM, Rob Klein wrote: > > We can be fairly certain that materials like Nylon and PTFE were not > around when the original bell was made ... > > > > Someting like (waxed) silk, perhaps? > > > > > > Met vriendelijke groet, > > Rob Klein > > > > verstuurd vanaf mijn smartphone > > > > Op 22 jul. 2019 21:40, om 21:40, Adrian Godwin <[email protected]> > schreef: > >> Nylon is hygroscopic. Doesn't seem like a good idea. PTFE is flexible > >> when > >> thin - eg PTFE sleeving. Some of the other artificial fibres such as > >> dacron, kynar etc. might also be good - I'm not sure of their > >> electrical > >> properties. > >> > >> > >> On Mon, Jul 22, 2019 at 7:17 PM Dr. David Kirkby < > >> [email protected]> wrote: > >> > >>> I have been discussing with some friends about the Oxford Bell with a > >> view > >>> to making one. One guy can not believe a battery can last 175 years. > >>> > >>> Anyway, I was wondering what would make a good insulator to suspend > >> the > >>> ball. I thought of nylon fishing like, but can anyone think of a > >> better > >>> insulator? Obviously PTFE is a good insulator, but it’s not exactly > >>> flexible. Nor is sapphire. > >>> > >>> Dave > >>> -- > >>> Dr. David Kirkby, > >>> _______________________________________________ > >>> volt-nuts mailing list -- [email protected] > >>> To unsubscribe, go to > >>> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > >>> and follow the instructions there. > >>> > >> _______________________________________________ > >> volt-nuts mailing list -- [email protected] > >> To unsubscribe, go to > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > >> and follow the instructions there. > > _______________________________________________ > > volt-nuts mailing list -- [email protected] > > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > > > > --- > > This email has been checked for viruses by AVG. > > https://www.avg.com > > _______________________________________________ > volt-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > -- Dr. David Kirkby, _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there.
