360 degree clock
Hello; If you think about it, hours, minutes and seconds are an awkward system for using time. My idea would be to switch to a 360 degree clock. The earth is round and makes one complete revolution per day, 360 degrees. So why not measure time based on what angle of degree the earth happens to be at your location. Midnight could be 360 degrees 6AM 90 degrees Noon 180 degrees 6PM 270 degrees For conversions: Each hour would equal 15 degrees. Each degree would equal 4 minutes. Each degree would equal 240 seconds. So instead of saying it's 6:34am and 28 seconds it would be: 6x15 = 90 34/4 = 8.5 28/240 =.117 The time would be 98.617 degrees Of course you wouldn't do conversions, you would just look at your new 360 degree watch. If I came to work at 98.617 degrees and left at 187.786 degrees I have worked: 187.786 - 98.617 = 89.169 degrees Makes more sense to me. Did anyone ever tell time this way? It seems like it would work nicely with sundials. brent --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: 360 degree
I guess if I am going to get rid of hours and minutes it would be a good time to get rid of the 360 degree circle as well. Maybe my new circle would have 100 degrees. Midnight would be 100 degrees 6am would be 25 degrees noon would be 50 degrees 6pm would be 75 degrees Now we are getting somewhere! If only I was in charge of such things. --- https://lists.uni-koeln.de/mailman/listinfo/sundial
RE: 360 degree clock
It's also possible to think of degrees, arcminutes, etc., as a cryptic notation, given the long history of timekeeping. I have a set of 7-place trig tables, published in 1958 by H.M. Nautical Almanac Office, with the argument in time. For example, this book lists the tangent of 1h 38m 13s as 0.4568685 (because that amount of time is the same as 24.5541666... degrees). Roger -Original Message- From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Brent Sent: Tuesday, January 18, 2011 3:03 PM To: Sundial List Subject: 360 degree clock Hello; If you think about it, hours, minutes and seconds are an awkward system for using time. My idea would be to switch to a 360 degree clock. The earth is round and makes one complete revolution per day, 360 degrees. So why not measure time based on what angle of degree the earth happens to be at your location. Midnight could be 360 degrees 6AM 90 degrees Noon 180 degrees 6PM 270 degrees For conversions: Each hour would equal 15 degrees. Each degree would equal 4 minutes. Each degree would equal 240 seconds. So instead of saying it's 6:34am and 28 seconds it would be: 6x15 = 90 34/4 = 8.5 28/240 =.117 The time would be 98.617 degrees Of course you wouldn't do conversions, you would just look at your new 360 degree watch. If I came to work at 98.617 degrees and left at 187.786 degrees I have worked: 187.786 - 98.617 = 89.169 degrees Makes more sense to me. Did anyone ever tell time this way? It seems like it would work nicely with sundials. brent --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: 360 degree
Brent, Have a look at http://en.wikipedia.org/wiki/Decimal_time - French Revolutionary Time and Fractional Days both seem to have a bearing on your Angular Clocks. Why go with 100 degrees in a day? Radians are a well understood, and completely suitable alternative. Lunchtime would become Pi time, and bedtime would be immediately after 2 Pi. Works for me! Steve On 18/01/2011 5:19 PM, Brent wrote: I guess if I am going to get rid of hours and minutes it would be a good time to get rid of the 360 degree circle as well. Maybe my new circle would have 100 degrees. Midnight would be 100 degrees 6am would be 25 degrees noon would be 50 degrees 6pm would be 75 degrees Now we are getting somewhere! If only I was in charge of such things. --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial
RE: 360 degree
I believe 100 divisions are called gradients. Someone already did it. Tom L. -Original Message- From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Brent Sent: Tuesday, January 18, 2011 1:19 PM To: Sundial List Subject: Re: 360 degree I guess if I am going to get rid of hours and minutes it would be a good time to get rid of the 360 degree circle as well. Maybe my new circle would have 100 degrees. Midnight would be 100 degrees 6am would be 25 degrees noon would be 50 degrees 6pm would be 75 degrees Now we are getting somewhere! If only I was in charge of such things. --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial
RE: 360 degree
Sorry about that, 400 gradients in a circle by British military. Cut it up any way you like and call the resulting divisions whatever you like. Have fun Tom -Original Message- From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Tom Laidlaw Sent: Tuesday, January 18, 2011 2:53 PM To: bren...@verizon.net; 'Sundial List' Subject: RE: 360 degree I believe 100 divisions are called gradients. Someone already did it. Tom L. -Original Message- From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Brent Sent: Tuesday, January 18, 2011 1:19 PM To: Sundial List Subject: Re: 360 degree I guess if I am going to get rid of hours and minutes it would be a good time to get rid of the 360 degree circle as well. Maybe my new circle would have 100 degrees. Midnight would be 100 degrees 6am would be 25 degrees noon would be 50 degrees 6pm would be 75 degrees Now we are getting somewhere! If only I was in charge of such things. --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: 360 degree
Hi Brent, If you were in charge of things, we could call you Napoleon. What you are proposing is the French Republican system, the metric system applied to time, 100 grad for a quadrant, 90 degrees, 10 hours a day, 100 minutes per hour, all totally rational. They even produced clocks and sundials based on these rational, ok decimal, systems. A few still exist. Here is my favourite example, a Republican sundial with a relativistic correction. See http://www.waymarking.com/waymarks/WM7ETZ_Republican_Sundial_Les_Vigneaux_Vallouise_Hautes_Alpes_France As this is a text message, paste the url into your browser to see this fine sundial. Regards, Roger Bailey -- From: Brent bren...@verizon.net Sent: Tuesday, January 18, 2011 1:19 PM To: Sundial List sund...@rrz.uni-koeln.de Subject: Re: 360 degree I guess if I am going to get rid of hours and minutes it would be a good time to get rid of the 360 degree circle as well. Maybe my new circle would have 100 degrees. Midnight would be 100 degrees 6am would be 25 degrees noon would be 50 degrees 6pm would be 75 degrees Now we are getting somewhere! If only I was in charge of such things. --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial
