As for the above hour line formula, maybe the best way to teach the
beginner its solution would be to pick an example latitude and print the
pages of Natural Logrithrimic Functions from a typical trig table that
have
the desired values. That way, the beginner could see how to use the
tables.
Most of Indiana does not use DST. The Northwestern portion of the state,
near Gary, does use DST - to stay in sync with Chicago, I presume. Having
spent many years without DST, I never have seen its necessity.
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Can anyone give me a list of
One can get a similar effect riding a large ferris wheel right at sunset.
While not giving a full sunrise/sunset, it's still
fun to watch the upper limb disappear and reappear :-)
-Original Message-
From: William P Thayer [mailto:[EMAIL PROTECTED]
I also thought something I would like
snip
Is it possible to have a precise sundial that is not accurate? (I think
not)
snip
On the other hand, a heliochronometer would HAVE to be precise and
accurate because
it is well-made and has small (1 min?) time divisions. Right?
How about a misaligned heliochronometer (ie, set for the
Hello dialists,
I realize that this has been touched on before, but the references I saved
all seem to be limited to the US. Does anyone know of a source for maps
with lines of constant magnetic deviation for the entire continent? Alaska
and central / western Canada are of particular interest.
Although I feel it would be an interesting opportunity, I wonder what at
time of day one would schedule this type of event? With our geographic
distribution, it would be hard to avoid having it at 3am local time for
_somebody_ :-) Not that I'm discouraging the idea! For me, the slight
delay in
I, too enjoy the Electric Astrolabe, and am happy to report that it even
runs ok on my Toshiba laptop running NT4 sr3 . (DISCLAIMER: your NT results
may vary :-)).
However, as the denizens of this list appear to this lurker to be the
hands-on types, I'd like to point out that Jim also makes and
