Hello again;
If we could get rid of hours and minutes and seconds as well
as the 360 degree circle I would also get rid of the math we
use to measure round things.
I am a house designer and I noticed that a larger house is
cheaper to build per square foot than a similar shaped
smaller
On Tue, 18 Jan 2011, Tom Laidlaw wrote:
Sorry about that, 400 gradients in a circle by British military.
Grads originated in the French Revolutionary metrication project.
Centigrads correspond to kilometers because in both cases there are 10,000
between a pole and the equator. There is a
Hi Roger,
about the French Republican system I've a message from Fabio Garnero (Saluzzo,
Cuneo, Italy, f...@solariameridiane.it).
The sundial you have reported shows the French Revolution time but it is a
modern sundial (1989).
This sundial www.sundialatlas.eu/atlas.php?so=IT2810 is on a
Fabio;
That's a great sundial.
It looks like the date must have changed at noon.
That makes perfect sense as the beginning and end of each
day would be simple to witness, impossible to do at midnight.
However, that would be a difficult leap for societies who do
most of their activities from
Dear Brent,
You correctly note...
It looks like the date must have changed at noon.
Indeed so. Interestingly, even with GMT (as used by
astronomers and navigators) the date used to change
at noon (which was referred to as 0h GMT). This was
the case until 1 January 1925, so not very long ago!
Frank,
For another French Revolution sundial look at the website of De
Zonnewijzerkring.
Address below.
Look for:
article of the month
archives 2005
month 05-04, (April)
You see at noon it is 5 decimal time.
Around the dial is a double scale for azimuth in 400 degrees with 0 and 100
at
Fer;
On the dial you reference below:
http://www.de-zonnewijzerkring.nl
the azimuth scale reads from left to right: 80-90-100-90-80
But on the wall dial here:
http://www.sundialsatlas.eu/atlas.php?PHPSESSID=8e74105bf2da4262cba08780f5d6a131
left to right reads:
80-90-100-10-20
Can you explain
