Tropic of Capricorn

> Here's the Tropic of Capricorn where it passes through Namibia, well sorta. Apparently this latitude is drifting Northernly by about 50 feet a year. That seems like a lot to me. My Gps puts the sign at S 23-30-00, the actual line of Capricorn according to Wikipedia 2012 is S 23-26-16 about 4.4 miles if my math is correct... But I'm no Geodisist.
>
According to the same source the 'Tropic of cancer is moving southerly at the same rate.

Tropics of Capricorn and Cancer

50' a year is about 0.47" of arc. Currently it is a narrowing of the band within which the sun moves from summer to winter. Technically it also means the Atctic and Antarctic circle should be moving toward the poles.

Anyone know how long the records have been kept regarding the solar ephemeris?

I see one online ephemeris that goes back to 1600, but the stars have been studied a very much longer time than that.

Is this cyclical and if so what is the pattern?

Paul in PA

Glad to see you posted. Your gap between posts while on expedition was sufficient to initiate concern, especially considering your sleeping accommodations. Can’t wait to see the photo blog. With the technology available today, on your next sojourn it would be interesting if you were “tagged” (like a great white shark or sea turtle) so we can ascertain and follow your whereabouts on the Globe via the web.

After enjoying all the photography on your website, thus knowing all the places you have visited, it becomes apparent that earth may be too small for you!

Take care.B-)

ps: is there beer anywhere?

Whew! Finally we find Daryl is o.k. in Africa. I became worried when I saw the sleeping arrangements and as we get older having to urinate more often in the dark. It would sure be a *iss*r to be ate by a critter while relieving oneself. Before one only had to worry about eating yellow snow, but Daryl takes it to another extreme. Can't wait for the pic's and be safe out there Daryl.

Pablo B-)

> I'll post my Namibia photoblog when I find reliable Internet... It's been one interesting journey...

I bet. Can't wait to see your photos..

I have had Namibia news alerts on and one interesting one was about the Rhino powder trade in Nammibia. It seems like they are considering regulating illegal poachers in order to preserve the species.

and another about a guy being arrested for having sex with a dog for the second time in the past year. maybe too much rhino powder?

> I'll post my Namibia photoblog when I find reliable Internet... It's been one interesting journey...

Thanks Daryl for the update.
Cheers.

> Here's the Tropic of Capricorn where it passes through Namibia, well sorta. Apparently this latitude is drifting Northernly by about 50 feet a year. That seems like a lot to me. My Gps puts the sign at S 23-30-00, the actual line of Capricorn according to Wikipedia 2012 is S 23-26-16 about 4.4 miles if my math is correct... But I'm no Geodisist."""

daryl, that sounds like 'precession', basically a drift of the poles in a very long period:

precession described

more

http://www.astro.cornell.edu/academics/courses/astro201/earth_precess.htm
as opposed to nutation, the faster wobble at a lower amplitude. it would make the celestial pole's track, in time, look a bit like a spirograph pattern.

details aside, enjoy your trip

Sammy's Version of the Topic of Capricorn. 🙂

The LSU Law School sends ALL of its out-of-date law books to the Law School library in Namibia because they have virtually the same system of laws that the State of Louisiana uses.

you mean like this???

I thought this thread was going to be about Henry Miller 😉

"Tropic of Capricorn" isn't bad, but "The Colossus of Maroussi" is an underrated masterpiece.

you mean like this???

Yep

Pablo :excruciating:

Bit of a taster here while Daryl gets back to us:

Skip to around 1:30 where the documentary starts.