[time-nuts] zero crossing of venus

Poul-Henning Kamp phk at phk.freebsd.dk
Thu Jun 7 05:40:01 UTC 2012


In message <CABbxVHs=nhLies1VRYO5Qhk2uF48AAseHZBTV69-CorER=ZZqQ at mail.gmail.com>
, Chris Albertson writes:

>does anyone have a reference to the math and process used to measure
>distance from earth to sun using transit of venus?

I read about it many years ago in a book about Einstein (as lead-up to
the mercury stuff).  The measurements mentioned was the time it took
Venus to pass the Suns limb, and the time it took the center of Venus
to pass across the Sun.  No math given.


-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
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