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Antikythera Mechanism shows evidence of lunar calendar
SocArXiv ^ | June 2020 | C.Budiselic1, A.T. Thoeni2*, M. Dubno3, A. T. Ramsey4

Posted on 12/18/2020 10:36:13 AM PST by SunkenCiv

New finding from Antikythera Mechanism
Based onstatistical analysis of micro CT imaging of the more than 2,000-year-old Antikythera Mechanism, we show unexpected evidence establishing a lunar calendar with Egyptian civil-calendar month-names circa 100 B.C. This finding displaces a century-long presumption of a 365-day solar calendar on the Antikythera Mechanism with a 354-day lunar calendar and may inform a fundamental question of the number and type of calendars used in Ancient Egypt.

(Excerpt) Read more at osf.io ...


TOPICS: History; Science; Travel
KEYWORDS: antikytheramechanism; archaeoastronomy; egypt; godsgravesglyphs
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KEYWORDS: ancientcomputer; antikythera; antikytheramechanism; archaeoastronomy; astronomy; computer; egypt; godsgravesglyphs; greece; history; mechanism; science; technology

1 posted on 12/18/2020 10:36:13 AM PST by SunkenCiv
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To: StayAt HomeMother; Ernest_at_the_Beach; 1ofmanyfree; 21twelve; 24Karet; 2ndDivisionVet; 31R1O; ...

2 posted on 12/18/2020 10:37:27 AM PST by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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To: SunkenCiv

Aliens


3 posted on 12/18/2020 10:37:27 AM PST by BenLurkin (The above is not a statement of fact. It is either opinion, or satire. Or both.)
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To: BenLurkin

Well, yeah, obviously. ;^)


4 posted on 12/18/2020 10:38:03 AM PST by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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To: SunkenCiv

But does it tell TIME??........................


5 posted on 12/18/2020 10:42:56 AM PST by Red Badger ( “The goal of socialism is communism.”... Vladimir Lenin)
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To: SunkenCiv

Oh well then, this is clearly within the capabilities of the Greeks of that day.

I had deep reservations about a calendar based on the Sun because that would be a ridiculous claim. :-)


6 posted on 12/18/2020 10:44:04 AM PST by wildbill (The older I get, the less 'life in prison" means to me)
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To: SunkenCiv
There's a YouTuber named Clickspring that has been in the process of recreating the Antikythera Mechanism using period correct techniques and tools, to show that it was possible back in the day.

His video updates stopped about a year ago, until this week when he posted another video announcing this paper, that he co-authored.

Kinda neat binge watching if you're so inclined.

https://www.youtube.com/playlist?list=PLZioPDnFPNsHnyxfygxA0to4RXv4_jDU2

7 posted on 12/18/2020 10:45:14 AM PST by Yo-Yo (is the /sarc tag really necessary?)
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To: SunkenCiv; Red Badger; All

The two key finds:

+ A pin and slot mechanism accounting for the moon’s elliptical orbit.

+ 26.5 x 2 = 53


8 posted on 12/18/2020 10:45:27 AM PST by BenLurkin (The above is not a statement of fact. It is either opinion, or satire. Or both.)
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To: SunkenCiv

A number of cultures used lunar calendars. Semitic ones come to mind.


9 posted on 12/18/2020 10:48:10 AM PST by JoeRender
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To: SunkenCiv

Looks like one of those things on the door of a submarine that the sailors spin to bolt the door.

I think the technical term is Submarine Spinning Thing.


10 posted on 12/18/2020 10:49:02 AM PST by blueunicorn6 ("A crack shot and a good dancer”)
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To: SunkenCiv

Ah! That explains it.

Any tool that gives you a better sense of when to duck can command any price!


11 posted on 12/18/2020 10:54:21 AM PST by null and void (My President is a Person Of Color, Orange is a Color...)
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To: BenLurkin

The lunar cycle is closer to 29.53 days. A lot of moon phase clocks have gears with 59 teeth (as did the Antikythera mechanism) that closely approximate two lunations. The Gregorian calendar has a sidekick lunar calendar good to about one day in 8,000 years on average, which is even better than the Gregorian calendar’s approximation of the solar year (365 + 1/4 -1/100 + 1/400 = 365.2425), which is only good to about one day in 3000 years. The lunar calendar is used with the Gregorian Calendar to calculate the date of Easter.


12 posted on 12/18/2020 10:57:44 AM PST by Lonesome in Massachussets ("Women's intuition" gave us the Salem witch trials and Kavanaugh hearings. Change my mind.)
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To: Red Badger

It does, but it’s so heavy the wristband keeps breaking.


13 posted on 12/18/2020 10:58:40 AM PST by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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To: SunkenCiv

It’s actually the first artificial heart... a little clunky but it was a start.


14 posted on 12/18/2020 10:59:58 AM PST by Bellagio
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To: Yo-Yo

That’s where I ran into it, couldn’t stand the video, and looked for the original research.

There’s a bunch of vids pirated from documentaries about the replication efforts by watchmaker and such, going back at least twelve years.


15 posted on 12/18/2020 11:00:33 AM PST by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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To: BenLurkin; SunkenCiv

What powered the thing? A wind-up coil spring was about 1500 years in the future................


16 posted on 12/18/2020 11:17:03 AM PST by Red Badger ( “The goal of socialism is communism.”... Vladimir Lenin)
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To: Lonesome in Massachussets; BenLurkin

The synodic month (which is the familiar one) is 29.53, the sidereal month is 27.something. :^)


17 posted on 12/18/2020 11:20:06 AM PST by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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The World’s First Computer May Have Been Used To Tell Fortunes [Engraved text translation]
smithsonianmag
Posted on 6/10/2016, 9:55:53 AM by BenLurkin
https://freerepublic.com/focus/chat/3438759/posts


18 posted on 12/18/2020 11:21:43 AM PST by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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https://www.google.com/search?q=Antikythera+Mechanism&tbm=vid


19 posted on 12/18/2020 11:24:11 AM PST by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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To: SunkenCiv

The primary author’s video:
https://www.youtube.com/watch?v=MkKgdq57uOo


20 posted on 12/18/2020 11:25:07 AM PST by Born to Conserve
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