Static Electricity

On Thursday, February 9, 2023 at 4:46:14 AM UTC+11, Robert Roland wrote:
> On Tue, 7 Feb 2023 05:12:05 -0800 (PST), Anthony William Sloman 
> <bill....@ieee.org> wrote: 
> 
> >There are lots of ways of picking up a static charge. Car's famously do it, and people hang a carbon-loaded rubber strip on the back bumper to avoid getting a shock when they got out of a car.
> A long, long time ago, yes. 
> 
> These days, the tires have carbon or other conductive additives. 

Car tyres have been loaded with 25% carbon black pretty much forever.

Some modern tyres replace this with finely divided silica - for less rolling resistance - and that can make electrostatic charging worse.

-- 
Bill Sloman,  Sydney