Why?

Message boards : Science (non-SETI) : Why?

To post messages, you must log in.

AuthorMessage
Profile Chris SCrowdfunding Project Donor
Volunteer tester
Avatar

Send message
Joined: 19 Nov 00
Posts: 38176
Credit: 21,285,756
RAC: 27,978
United Kingdom
Message 655255 - Posted: 6 Oct 2007, 17:27:45 UTC

Who decided that we would have 90 degrees in a right angle, therefore 360 degrees in a circle.

Wouldn't it have made more sense to have had 100 degrees?


Those are my principles, and if you don't like them ... well, I have others.
Groucho Marx 1895-1977

I also have mine, and if you don't like them ... tough, live with it.
Chris S 2016

Member of UCB Charter Hill Society

ID: 655255 · Report as offensive
Profile William Rothamel
Avatar

Send message
Joined: 25 Oct 06
Posts: 3224
Credit: 1,264,286
RAC: 277
United States
Message 655267 - Posted: 6 Oct 2007, 17:44:47 UTC - in response to Message 655255.

Who decided that we would have 90 degrees in a right angle, therefore 360 degrees in a circle.

Wouldn't it have made more sense to have had 100 degrees?


I think we inherited this from the Babylonians-Somehow they had a base 60 imbedded in their numbering schemes.

ID: 655267 · Report as offensive
Profile Chris SCrowdfunding Project Donor
Volunteer tester
Avatar

Send message
Joined: 19 Nov 00
Posts: 38176
Credit: 21,285,756
RAC: 27,978
United Kingdom
Message 655272 - Posted: 6 Oct 2007, 17:49:13 UTC - in response to Message 655267.
Last modified: 6 Oct 2007, 17:51:02 UTC

Who decided that we would have 90 degrees in a right angle, therefore 360 degrees in a circle.

Wouldn't it have made more sense to have had 100 degrees?


I think we inherited this from the Babylonians-Somehow they had a base 60 imbedded in their numbering schemes.


Interesting!

Mr Centigrade seemed sensible, what happened to Mr Fahrenheit with 212 degrees then?

Those are my principles, and if you don't like them ... well, I have others.
Groucho Marx 1895-1977

I also have mine, and if you don't like them ... tough, live with it.
Chris S 2016

Member of UCB Charter Hill Society

ID: 655272 · Report as offensive
Profile Clyde C. Phillips, III

Send message
Joined: 2 Aug 00
Posts: 1851
Credit: 5,955,047
RAC: 0
United States
Message 655318 - Posted: 6 Oct 2007, 19:22:09 UTC

Maybe somebody made degrees based on how far the Sun moves through the stars each day of the year. Somehow he/she rounded off 365 to 360 for a rounder number.


ID: 655318 · Report as offensive
Profile Sarge
Volunteer tester

Send message
Joined: 25 Aug 99
Posts: 10774
Credit: 3,057,791
RAC: 2,898
United States
Message 655605 - Posted: 7 Oct 2007, 4:22:30 UTC

William and Clyde have made some plausible suggestions.
And, dividing by 2, 3, 4 or 5 is typical. (Even 6, as it is 2 times 3.) So, we can see where 60 and 90 can come from this.


Capitalize on this good fortune, one word can bring you round ... changes.

ID: 655605 · Report as offensive
Profile ML1
Volunteer tester

Send message
Joined: 25 Nov 01
Posts: 9201
Credit: 5,930,642
RAC: 1,944
United Kingdom
Message 656736 - Posted: 9 Oct 2007, 13:07:05 UTC - in response to Message 655255.

... Wouldn't it have made more sense to have had 100 degrees?

Look up gradians.

Keep searchin',
Martin

See new freedom: Mageia5
See & try out for yourself: Linux Voice
The Future is what We all make IT (GPLv3)

ID: 656736 · Report as offensive
Odysseus
Volunteer tester
Avatar

Send message
Joined: 26 Jul 99
Posts: 1807
Credit: 4,913,052
RAC: 19
Canada
Message 664821 - Posted: 23 Oct 2007, 3:18:31 UTC - in response to Message 656736.

Look up gradians.

The only time I ever encountered gradians ‘in the wild’ was on a summer job as a geological field assistant; we used them for our dip & strike measurements.

SI trivia: the metre was originally intended to be the distance on the Earth’s surface represented by 1/100,000 grad of latitude, just as the nautical mile is based on the minute of latitude.

The Canadian Forces use a compatible angular measure: 1 mil = 1/6400 circle = 1/16 grad. It gets its name from the fact that an object that subtends 1 mil of arc is about one thousandth as large as it is distant—ideally the angle would be 1 milliradian = 1/6283 circle, but of course 1/6400 (= 0.982 mrad) works much better with the traditional compass points.

ID: 664821 · Report as offensive
Profile Scary Capitalist
Avatar

Send message
Joined: 21 May 01
Posts: 7407
Credit: 97,085
RAC: 0
United States
Message 664943 - Posted: 23 Oct 2007, 8:45:31 UTC - in response to Message 655318.

Maybe somebody made degrees based on how far the Sun moves through the stars each day of the year. Somehow he/she rounded off 365 to 360 for a rounder number.

That's been my understanding. Seems I saw something about it many years ago on an educational tv show.
Founder of BOINC team Objectivists. Oh the humanity! Rational people crunching data!
I did NOT authorize this belly writing!

ID: 664943 · Report as offensive
Odysseus
Volunteer tester
Avatar

Send message
Joined: 26 Jul 99
Posts: 1807
Credit: 4,913,052
RAC: 19
Canada
Message 665294 - Posted: 23 Oct 2007, 22:57:58 UTC - in response to Message 664943.

Maybe somebody made degrees based on how far the Sun moves through the stars each day of the year. Somehow he/she rounded off 365 to 360 for a rounder number.

That's been my understanding. Seems I saw something about it many years ago on an educational tv show.

There’s an ancient Egyptian myth that says that the year originally had 360 days; the additional five were made out of light borrowed from the Moon, which is why the latter is dark some of the time …

ID: 665294 · Report as offensive
Profile Scary Capitalist
Avatar

Send message
Joined: 21 May 01
Posts: 7407
Credit: 97,085
RAC: 0
United States
Message 665551 - Posted: 24 Oct 2007, 4:58:06 UTC - in response to Message 665294.

Maybe somebody made degrees based on how far the Sun moves through the stars each day of the year. Somehow he/she rounded off 365 to 360 for a rounder number.

That's been my understanding. Seems I saw something about it many years ago on an educational tv show.

There’s an ancient Egyptian myth that says that the year originally had 360 days; the additional five were made out of light borrowed from the Moon, which is why the latter is dark some of the time …

Sounds good. Let's go with that story and everyone agree to stick to it. :-)
Founder of BOINC team Objectivists. Oh the humanity! Rational people crunching data!
I did NOT authorize this belly writing!

ID: 665551 · Report as offensive

Message boards : Science (non-SETI) : Why?


 
©2016 University of California
 
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.