"Chris Hogg" wrote in message
...
On Sat, 22 Aug 2020 14:58:08 +0100, "NY" wrote:

"Jim GM4DHJ ..." wrote in message
...
who has got caught out by the Zanzibar effect when calibrating
things..me
for one

What is the Zanzibar effect? I can't find anything on Google so it's
evidently not a widely-known term.

Zanzibar time : https://tinyurl.com/suqbk29

Basically, a circular calibration process. A calibrates his instrument
against an instrument owned by B, who unbeknown to A, calibrates his
instrument against A's.

Interesting that googling for the phrase as quoted "zanzibar effect" does
not produce any matches. Lots of matches for the country of that name, but
nothing else. Even googling for "zanzibar time" or "zanzibar effect time"
doesn't produce any matches.

I can understand the problem of circular calibration, but I'd never have
been able to discover or even guess what it was from the phrase, assuming I
hadn't already heard of it.