[time-nuts] Why sunspots affect a pendulum?

[billriches]

Antonio - that sunspot comment was made as a joke!

73,

Bill

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of iovane---
via time-nuts
Sent: Wednesday, October 14, 2015 12:31 PM
To: time-nuts at febo.com
Subject: [time-nuts] Why sunspots affect a pendulum?

In the other thread "How did they distribute time in the old days?" Bill
wrote:
> It loses or gains about a minute a month depending on the moon phase 
>or sunspots.

Why should sunspots affect the rate of a pendulum clock? Sunspots are not
related to gravity. What about?  Any other kind of clocks is affected by
sunspots? Who knows? Is what Bill stated reliable? Any paper or website
about?I would be interested in recorded pendulum clock drift data.
Antonio I8IOV
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