RE: DST Misconceptions

2010-03-16 Thread Chuck Nafziger
I live at about latitude 48 N. where a one hour time change is insufficient to make use of the changing sunrise. I have been at several jobs where the shop workers were capable of changing their shop hours so they would get to work shortly after sunrise during the summer so they could enjoy al

Re: refraction formula

2010-03-16 Thread Brad Lufkin
the term "a" in your formula is the Sun's apparent altitude in degrees (see Chapter 16 of Meuus's Astronomical Algorithms). On Tue, Mar 16, 2010 at 12:27 PM, Thomas Steiner wrote: > Hi all, > I am looking for a formula for refraction. > At http://www.sundialsoc.org.uk/glossary/equations/equations

refraction formula

2010-03-16 Thread Thomas Steiner
Hi all, I am looking for a formula for refraction. At http://www.sundialsoc.org.uk/glossary/equations/equations.htm ist says: 10. Sun’s refraction Ro=1/ (tan(a+7.31/(a+4.4))) Ro is the refraction in arcmins for a temperature of 10ºC and an atmospheric pressure of 1010 mb. For other conditions, a m

Re: How Sundials Work

2010-03-16 Thread Thomas Steiner
Hi, have you thought about setting up at wikipedia for some languages so people can work together step by step on each document? Even images or graphics could be changed into other languages. I could contribute for the german translation. http://www.sundialsoc.org.uk/HDSW.htm is such a wonderful in

RE: DST Misconceptions

2010-03-16 Thread John Carmichael
I wonder why then does the state of Arizona does NOT observe DST, but the Navajo Indian reservation in Arizona DOES observe DST? Must be because they have their own government. Shouldn't that be the opposite if the blanket story is true? From: xni...@gmail.com [mailto:xni...@gmail.com] On

Re: DST Misconceptions

2010-03-16 Thread koolish
The problem with all these arguments is that they assume that all hours of the day are equally useful, and they obviously are not. A sarcastic or funny joke doesn't change the fact that most people today have more waking hours after noon than before noon. > Hi > > 2010/3/16 Chuck Nafziger > >>

Re: "How Sundials Work" Latest

2010-03-16 Thread Richard Mallett
On 16/03/2010 02:41, Tony Moss wrote: > Hi all, >So now a version of "How Sundials Work" in Dutch is > forthcoming also! > > Tony M. > --- > https://lists.uni-koeln.de/mailman/listinfo/sundial > > > Taking over the world, one language

Re: DST Misconceptions

2010-03-16 Thread Aimo Niemi
Hi 2010/3/16 Chuck Nafziger > > > Perhaps it is better explained this way, as a wise old Arizona Indian chief > once said when daylight savings was explained to him: > > "Only a white man would believe that you could cut a foot off the top of a > blanket and sew it to the bottom of a blanket and