Hello Robert,
Calculating the angles for the hourlines isn't complicated if the dial is
translated to an equivalent horizontal sundial.
Start to calculate 3 angles:
sin v = sin phi . cos i - cos d . cos phi . sin i
v is the style height and also the equivalent latitude where the dial is
horizont
Hello Frank,
As I understand you have a vertical dial at latitude phi = 55 deg, declining
30 deg
to west.
In other words: phi = 55 , i = 90 and d = 30
Calculating the style height v, the substyle distance b and the substyle
hourangle ts I get:
v = -29.78
b = -160.70 ( or 19.30)
ts = 35.18
These a
Thanks, Fer, I understand your signal well. My earler message had a
mistake in that I gave the declining angle of the wall as 30 deg but
gave the style height and distance for a wall declining 60 deg. The
reason is simply that I normally use the alignment or bearing of a wall
for my calculations,
Greetings, fellow dialists,
Fer had given me the correct location of my declining dial, now happily
affixed to a south-facing wall which is bobbing about on the ocean
somewhere south east of Greenland but still keeping pretty good time.
Thanks to Fer, and to others who responded also.
Frank 55N 1W
Dear Frank (and all),
Interesting message.
> By the way, does anyone else still use a pocket calculator for sundial
> calculations?
You'll be amused to know that I use an astrolabe, a hand calculator (Casio),
AND a slide rule to do the calculations. Much easier than programming, I
think, but th
All,
The other day I heard on the radio that some politcians has proposed a 2 hour
Daylight Savings Time offset to save energy.
++ron
Message text written by Ron Anthony
>some politcians has proposed a 2 hour Daylight Savings Time<
Britain used to have that during the war. It was called Double Summer time
here.
Patrick
Great..! I suppose it will be implemented as of Sunday next? ;-)
Rudolf
- Original Message -
From: Ron Anthony <[EMAIL PROTECTED]>
To:
Sent: Monday, March 26, 2001 8:07 PM
Subject: New California DST
> All,
>
> The other day I heard on the radio that some politcians has proposed a
