facebook, anyone?

2011-07-25 Thread karon
Are folks here using facebook? That would seem not only a great way to find one another, other than this targeted, topic driven list, but also a great place to post pictures of work as well as work in progress. For anyone interested, please feel free to send me a friend request mentioning dials

Power Grid Experiment Will Change Time

2011-07-25 Thread John Carmichael
I heard that the US government will be conducting an experiment with the US power grid that will possibly cause all traditional electric clocks to run twenty minutes fast. According to Homeland Security: "Beginning in July, electronic clocks in the United States could begin running as much as

Ok, I did it!

2011-07-25 Thread karon
Well, Tony and Simon have been very encouraging as have the rest of the list. I don't really KNOW what I am doing but, I went ahead and printed out a drawing from Shadows and transferred it to some leftover copper flashing. Hubby is going to cut me a piece of wood on which to mount the copper.

Re: Future of UTC / leap second

2011-07-25 Thread Rob Seaman
Hi Roger, > I received an announcement but cannot attend. Here are a few of my thoughts > on the subject. > > This is important meeting, as important as the meetings before the Gregorian > correction of the calendar and the introduction of standard time. I know > enough about the issue to unde

Shadows

2011-07-25 Thread karon
Ok, I have a question about the Shadows program. it takes in the longitude and latitude when you set a position to design the hour lines on a dial. What I wonder is, does that give you a dial that shows the official time when the dial is set or one that shows the sun time? In my case, I am in

trying to simplify the math

2011-07-25 Thread karon
Ok, I have seen all the equations. And, since I am more years from college than any woman my age will admit, I am going to skip that for now and go to concept. So. latitude determines the height of the gnomon. You are going to use a right angle for your gnomon and the top of that triangle is de

Re: Shadows

2011-07-25 Thread Willy Leenders
Karon, A good sundial indicates only solar time. For standard time and daylight saving time we have a watch! The sundial is the only simple instrument that can indicate solar time. Changing it to indicate standard time is similar to an astronomer who turns his device to indicate the sidereal time

RE: Shadows

2011-07-25 Thread karon
I did find the toggle that allowed me to have the dial correct for longitude. That may make a difference. Basically, where I live, my solar time is central standard time rather than Eastern Daylight. I am not sure If you can answer this or not. Do the time zones match solar time at the easternm

Re: Shadows

2011-07-25 Thread Willy Leenders
Karopn I have the impression that you have not understood my message. Make a sundial for solar time That means, when the sun is in the south the sundial indicates 12:00 am All your questions then are irrelevant for the construction of the sundial. Willy Leenders Hasselt in Flanders (Belgium) V

RE: Shadows

2011-07-25 Thread John Carmichael
Hi Karon: I must respectfully disagree with my friend Willy that "a good sundial indicates only solar time". By that definition, all my sundials are bad sundials (ouch! That hurts!) I understand his traditional point of view however. Many British and French dialists feel the same way as W

RE: trying to simplify the math

2011-07-25 Thread karon
I apologize for the level of my questions and the damage it may have done to the forum. I am certain that the ancients did not use high end geometry and trig as the geometry and trig formulae we use today. I simply thought there were graphic, geometric relationships and ratios that were a bi

Re: trying to simplify the math

2011-07-25 Thread Brent
Hi Karon; Don't let that guy bother you. The way I see this list is that there is an owner or a sponsor of the list but everyone else is just a guest and we are all equal, including you and I and the Professor Alfonso. I'm a newbie myself, with zero math skills but the members of this list h

RE: trying to simplify the math

2011-07-25 Thread karon
But, see, here is where you make the mistake. Not every craftsman had to understand the higher math, even if they practiced it. a builder could build a straight, tall wall without understanding gravity beyond a plumb line. He could level a basement floor simply by knowing that he would flood an

RE: trying to simplify the math

2011-07-25 Thread John Carmichael
Good for you Karon! You are right! One doesn’t need to know any higher math to design a great sundial. There are easy ways to design them nowadays- especially with great sundial drawing programs like Shadows Pro and many others. You just have to know enough about dialing to get your

Re: trying to simplify the math

2011-07-25 Thread Donald L Snyder
Karon, I am enjoying the discussion your comments have started. Perhaps this has already been suggested, and I missed it. But, I would recommend a browsing of Albert Waugh's book "Sundials, Their Theory and Construction," published by Dover Publications. It is available via Amazon for about

RE: trying to simplify the math

2011-07-25 Thread GINO SCHIAVONE
Thank you John. Thank you Karan. You struck a close and resonant note with me. I remember when I told John Carmichael that I laid out vertical dial designs with graphic methods. He politely said, "How quaint" and suggested I use Shadows Pro to generate the required geometry. Oh thank you, John