Ancient Greek Computer Reconstructed 266
afaik_ianal writes "A working reconstruction of an ancient Greek computer, the Antikythera mechanism, which was found at the bottom of the ocean in 1900 has been unveiled and is on display at the Technopolis museum, in Athens. The device is believed to have been used to calculate the positions of various celestial bodies including the sun and the moon on any given date. While some guesswork was required in the reconstruction, the bulk of the design is based on updated X-ray photographs of the device."
First Greek Post (Score:3, Funny)
Re:First Greek Post (Score:4, Funny)
Re:First Greek Post (Score:5, Funny)
Re: (Score:2)
Re:First Greek Post (Score:5, Funny)
They are now trying to build a Minotaur cluster with them, and using the Labrynth Firewall system to protect it.
Re:First Greek Post (Score:5, Funny)
+1, Greeky
You can kill me now.
Re:First Greek Post (Score:3, Funny)
Funny, I didn't think the DEC Alpha [wikipedia.org] had such a long history.
EricView your headers here [ericgiguere.com]
Re:First Greek Post (Score:2, Funny)
Re:First Greek Post (Score:2)
Does this always happen when
Re:First Greek Post (Score:2)
But (Score:5, Funny)
Re:But (Score:3, Funny)
Re:But (Score:5, Funny)
Re:But (Score:5, Funny)
Apparently, yes... "Spyridon Stais noticed that one of the pieces of rock had a gear wheel embedded in it." (from wikipedia [wikipedia.org]).
That's KDE, baby! :-p
Re:But (Score:4, Funny)
Well, the ship crashed, so we can easily surmise that it ran an ancient form of Windows. Perhaps even Windows 3.0. However, the ship must have been part of a trading network, so it could have had Windows 3.11 for workgroups.
Great error messages, though. (Score:2)
**Ripped shamelessly from the Fark headline.**
But, it still gets a better Doom 3 framerate than a Dual G5 PowerMac. :p
**Ripped shamelessly from my own comment on Fark.**
disclaimer: I am a Mac User.
Re:But (Score:3, Funny)
Doesn't anyone remember ... (Score:5, Funny)
Clearly the ancient Greeks had mechanical technology beyond even modern capabilities!
Pffft... (Score:3, Interesting)
HAH! That's NOTHING! What you must see, is their Orichalcum robots! [nyud.net]
Re:Doesn't anyone remember ... (Score:2)
Wait! What if this computer were actually made by the Gods?? Maybe we now have irrefutable proof of their existence! Take THAT Greek God-Biatches, not so omniscient now are you? ARE YOU?!
Greek Gods making clockwork owls.... (Score:5, Funny)
Helluva nice guy, though.
Sorry. Seemed a little Monty Python-esque.
Good-bye, sweet karma.
They don't build them like they used to (Score:5, Insightful)
Anyone place odds on our gold and copper monstrosities from the 70's on surviving thousands of years and people figuring out what they were used for? There's something to be said about elegantly simple one use devices like calculators.
Is it a computer? (Score:5, Insightful)
When the title reads 'ancient greek computer', I would expect something more along the lines of the machine that Babbage designed.
Re:Is it a computer? (Score:2)
Re:Is it a computer? (Score:2, Interesting)
Presuming that one could have wound this device forward, to see future positions of these planets, I would argue that one can do that with the minute hand of many mecanical clocks.
OTOH, I don't know of any mechanical (sprocket and gear) clocks that
Re:Is it a computer? (Score:5, Insightful)
I'm coming down on the side of 'glorified watch.' Just wind it up and watch it go. No programming, no modularity, no general problem solving. Certainly nowhere near a Turing machine.
Re:Is it a computer? (Score:4, Informative)
Re:Is it a computer? (Score:2)
At sea, brass (or bronze) was more reliable than parchment or papyrus.
Tide Predictors (Score:2)
Go down to figure 133. Around the turn of the century, there were devices even more elaborate than that one.
Re:Is it a computer? (Score:4, Interesting)
Programming was done by selecting and arranging gears. Modularity was accomplished by adding layers, coupling the shafts from one layer to another. I'd even go so far as to say that it's general purpose in the sense of an "Erector Set".
Differential gears make this device far more interesting than any other mechanical clockwork I've ever seen.
Re:Is it a computer? (Score:3, Funny)
My computer's just a glorified watch too... (Score:4, Funny)
Re:Is it a computer? (Score:2)
While it only works in one very specific problem domain, I would point out ...
Re:Is it a computer? (Score:5, Insightful)
But then it goes on to explain:
"The device is all the more impressive for its use of a differential gear, which was previously believed to have been invented in the 16th century."
It's far more sophisticated than a clockwork. Call it what you want, but it is a significant discovery in the history of analog computers.
Re:Is it a computer? (Score:3, Interesting)
American Submarines utilized a complex device called the TDC (Torpedo Data Computer). It was an electromechanical device that would take measurements from he periscope with range, direction, and speed estimates from the crew, and formulate a firing resolution for the Torpedoes.
Similar devices were used by other navies on Battleships to work out the firing resolutions on the larger cannons.
Back on point, just because it is clockwork doesn't mean it ca
and was used (Score:3, Funny)
Actually... (Score:5, Funny)
Actually, it was found in 2000. Just that no one thought to correct for Y2K problems!
Non-troll mirror (Score:5, Informative)
The Antikythera mechanism
The clockwork computer
Sep 19th 2002
From The Economist print edition
An ancient piece of clockwork shows the deep roots of modern technology
WHEN a Greek sponge diver called Elias Stadiatos discovered the wreck of a cargo ship off the tiny island of Antikythera in 1900, it was the statues lying on the seabed that made the greatest impression on him. He returned to the surface, removed his helmet, and gabbled that he had found a heap of dead, naked women. The ship's cargo of luxury goods also included jewellery, pottery, fine furniture, wine and bronzes dating back to the first century BC. But the most important finds proved to be a few green, corroded lumps--the last remnants of an elaborate mechanical device.
The Antikythera mechanism, as it is now known, was originally housed in a wooden box about the size of a shoebox, with dials on the outside and a complex assembly of bronze gear wheels within. X-ray photographs of the fragments, in which around 30 separate gears can be distinguished, led the late Derek Price, a science historian at Yale University, to conclude that the device was an astronomical computer capable of predicting the positions of the sun and moon in the zodiac on any given date. A new analysis, though, suggests that the device was cleverer than Price thought, and reinforces the evidence for his theory of an ancient Greek tradition of complex mechanical technology.
Michael Wright, the curator of mechanical engineering at the Science Museum in London, has based his new analysis on detailed X-rays of the mechanism using a technique called linear tomography. This involves moving an X-ray source, the film and the object being investigated relative to one another, so that only features in a particular plane come into focus. Analysis of the resulting images, carried out in conjunction with Allan Bromley, a computer scientist at Sydney University, found the exact position of each gear, and suggested that Price was wrong in several respects.
In some cases, says Mr Wright, Price seems to have "massaged" the number of teeth on particular gears (most of which are, admittedly, incomplete) in order to arrive at significant astronomical ratios. Price's account also, he says, displays internal contradictions, selective use of evidence and unwarranted speculation. In particular, it postulates an elaborate reversal mechanism to get some gears to turn in the right direction.
Since so little of the mechanism survives, some guesswork is unavoidable. But Mr Wright noticed a fixed boss at the centre of the mechanism's main wheel. To his instrument-maker's eye, this was suggestive of a fixed central gear around which other moving gears could rotate. This does away with the need for Price's reversal mechanism and leads to the idea that the device was specifically designed to model a particular form of "epicyclic" motion.
The Greeks believed in an earth-centric universe and accounted for celestial bodies' motions using elaborate models based on epicycles, in which each body describes a circle (the epicycle) around a point that itself moves in a circle around the earth. Mr Wright found evidence that the Antikythera mechanism would have been able to reproduce the motions of the sun and moon accurately, using an epicyclic model devised by Hipparchus, and of the planets Mercury and Venus, using an epicyclic model derived by Apollonius of Perga. (These models, which predate the mechanism, were subsequently incorporated into the work of Claudius Ptolemy in the second century AD.)
A device that just modelled the motions of the sun, moon, Mercury and Venus does not make much sense. But if an upper layer of mechanism had been built, and lost, these extra gears could have modelled the motions of the three other planets known at the time--Mars, Jupiter and Saturn. In other words, the device may have been able to predict the positions of the known celestial bodies for any given date with a respectable degre
Re:Non-troll mirror (Score:2)
So while I'm sure most of the discussion will be about the ancient invention, the article does have a (albeit thin) excuse for its own existence on the front page today: the particular event of the unveiling of the reconstruction. That's the "news," the rest is just background, and as you've pointed out, has already been re
Re:Non-troll mirror (Score:3, Insightful)
That said, it's still a cool device. Creating a mechanical clockwork that recreates an earth-centric viewpoint of the planetary motion is a remarkable feat in virtually any age.
Greek or geek? (Score:2, Funny)
A computer AND pr0n? They need to check their spellings. This was most certainly a geek ship, not a Greek ship.
Presenting the device (Score:4, Funny)
Reporter: So what do you think the device is for?
Archaeologist: Well we can't be entirely sure, but if you look at this X-Ray you can see what appears to be a cup-holder.
Greek? (Score:3, Interesting)
Re:Greek? (Score:3, Informative)
It isn't a computer, though.
Re:Greek? (Score:2)
You misspelled "either". (hint: they counted their years backwards back then.)
Re:Greek? (Score:3, Informative)
Re:Greek? (Score:2)
As for your claim about there being no Greek empire
Re:Greek? (Score:2)
Re:Greek? (Score:2)
It is quite "possibly" ;) _atlantisian_ imported by greeks before the fall of Atlantis.
Nah, it's been dated to about 87 BC [wikipedia.org]. My theory is that the Greeks ripped off Atlantean IP. Those Ancient Greeks better hope the Atlanteans didn't sell their IP to SCO before disappearing forever...
Re:Greek? (Score:2)
Re:Greek? (Score:2)
Even to the point that quite a few "Roman technologies" turn out to actually be of Greek origin.
Ancient technology (Score:2)
Re:Ancient technology (Score:2)
But yeah, the ancients...Merlin was one...Do you think Jesus was a goa'uld?
Re:Ancient technology (Score:2)
Re:Ancient technology (Score:2)
And the other was in Antarctica. It's locked up in Cheyenne mountain right now.
Re:Ancient technology (Score:2)
this just in (Score:4, Funny)
Re:this just in (Score:2)
Other Greek versions of the Antikythera mechanism (Score:5, Funny)
Apollo: The mechanism would be highly polished in a mahogany box with an observation window that would crack due to poor workmanship and high profit margins. Device only works within a 10 sq. mile area around Athens. Anywhere else and it's off.
Microsofticus: The mechanism would be essentially the same as the original, except some planets would be in different locations for 'efficiency' and 'because it runs faster that way.' Pebbles would bounce into the device via conspicuous holes and users would have to purchase a security contract from Symanticus. Not recorded in historical literature because nobody knew how it worked. Re-assembly from rusty bits required legions of scientists.
Zeus Microsystems: The mechanism would be painted purple and lilac and probably have some confetti around a highly stylized Sun logo on the outside. Giant purple globe in center of device would confound scientists for decades. Works, but gets slower with every passing decade, even though the underlying architecture is salvagable.
Linux Maximus: Device was buried with engineering diagrams in air-tight, humidity-controlled box at Delphi. Instructions for re-assembly (which it doesn't need) are also recorded within the device itself in every language known at the time as well as with pictures. Does what it needs to do and little else. Also, device was heavily cited in the historical literature and anyone was free to build one as long as they had access to commmodity blacksmith parts. Can be modified to suit different galactic locations, as well, with little effort.
Hewletticus-Packardus: Originally a papyrus-ink outfit, H.P., decided to get into the astronomy business because its archon, Sappho, wanted to. Ended up building poor version and purchased Compacticus to try and fix things. Didn't happen and Sappho went to Lesbos to become a poet with a zillion Drachma severence pay and H.P. just had to deal.
Re:this just in (Score:5, Funny)
The Antikythera mechanism is *not* user friendly, and until it is Antikythera will stay with >1% marketshare.
Take installation. Antikythera zealots are now saying "oh installing is so easy, just do hammer-dowel install package or hit package": Yes, because hitting with "hammer" makes so much more sense to new users than double-whipping a slave that does "setups".
Antikythera zealots are far too forgiving when judging the difficultly of Antikythera configuration issues and far too harsh when judging the difficulty of slave storage issues. Example comments:
User: "How do I get Quake 0.03 to run in Antikythera?" Zealot: "Oh that's easy! If you have Redtoga, you have to smelt quake_3_rh_8_i686_010203_glibc.tin, then do chmod +x with a file.....
This proves that... (Score:5, Funny)
Re:This proves that... (Score:2)
Re:This proves that... (Score:2)
Uh... looka t the date? (Score:2, Informative)
Love the Wikipedia "Warning" (Score:3, Insightful)
It's brilliant. Maybe we should include one at the top of every
On a sidenote, wouldn't it make sense to link to the static version of a Wikipedia entry page, rather than the top / dynamic one? I guess it would detract from the whole editable purpose of Wikipedia, but in terms of providing a reference -- which is what this article is using it for -- it seems like it would be safer to link against a static page of a specific revision, and then let people see the newest version if they wanted to.
Of course if they did that, we'd never get to see their 'Do Not Feed The Trolls' warning.
Ancient Greece vs the US (Score:3, Interesting)
Truly an amazing people, I think they had the greatest impact on world culture, much greater than the Romans, Assirians, Sumerians, Chinese, Japanese or any other old or modern civilization (including the American civilization).
Sure today's Greeks are not the same as the Ancient Greeks. Nevertheles I feel sad when Modern Greeks are made fun of by other peoples (including Americans).
By the way I am not Greek or related to any Greek folks.
Re:Ancient Greece vs the US (Score:3, Insightful)
1) 400 years of occupation under Ottoman empire; they missed the renaissance and the industrial revolution. The current Greek state was founded around 1830, yet it is in the first 30 countries when it comes to economic development and standard of living.
2) 1000 years and
Re:Ancient Greece vs the US (Score:2)
-Mark
Re:Ancient Greece vs the US (Score:2)
It wouldn't - if the reference point is earth, the position of the sun changes in relation to it. Nevertheless, the theory that the earth is orbiting the sun was also discussed by the ancient Greeks.
Beware of geeks bearing gifts... (Score:5, Funny)
Ptolomy's Almagest - first programming spec? (Score:5, Interesting)
If you are familiar with Ptolemy's "Almagest" you know he models the solar system as a series of epicycles. Until Copernicus' time (and after) European and Arab teaching was that these mechanisms were the physical reality but Ptolomy never actually endorsed that view. What if the "Almagest" was the specs for a dedicated astronomical computer and the Antikythera mechanism is the implimentation?
Then again...clocks became simpler over the centuries. Our modern clocks only show hours, minutes, seconds and perhaps the date. Mediaeval clocks showed years, months, weeks, days and hours as well as planetary positions, seasons, and solar and lunar eclipses. Their mechanisms were more complex than mechanical clocks and watches (remember them?) produced in the 20th century. Mechanical clocks built in the 1970s were more accurate but less complex than mechanical clocks built in the 1270s in Europe. Clocks built in earlier centuries in Arab lands were equally complex. The Antikythera mechanism could have been just one in a line of astronomical clocks.
old news (Score:2, Interesting)
Also make note of Heron of Alexandria. A great Greek inventor who invented machine gun, steam power, vending machine and many other mechanical machines.
http://en.wikipedia.org/wiki/Hero_of_Alexandria [wikipedia.org]
That proves it (Score:2)
Pity there are no pictures in the Article.
Those pirates... (Score:3, Funny)
Re:Those pirates... (Score:2)
Re:Those pirates... (Score:2)
Re:Those pirates... (Score:2)
Re:Those pirates... (Score:2)
Well being a two thousand year old computer... (Score:2)
Ancient greek UPS (Score:2)
(The audio output used master-slave speaker configuration)
Wikipedia (Score:2)
From Wikipedia:
Isn't it nice knowing that Slashdot has such a nice reputation ?
But, to get on topic: How is this a computer ? It can't be programmed, it doesn't have a memory or anything. It is simply a mechanical astronomical clock. An impressive clock, certainly, but that does not make it a computer.
Aristarchus of Samos and Heliocentrism (Score:5, Interesting)
Saw it in the Archeological Museum in Athens (Score:3, Interesting)
The bronze exhibition also has other fine worked small stuff (and the gold stuff exhibition has even smaller and more detailed worked stuff), so I give the old Greeks the ability to work on this level. Perhaps not your neighbourhood blacksmith, but some experts were definitely able to do this level of work.
Antikethyra mechanism and programmability (Score:2)
Ancient Greek planetaria (Score:4, Informative)
It's an ANALOG computer, and Feynman's dubious (Score:2)
Kent Brockman (Score:3, Funny)
Kent Brockman (listens to earpiece)
Kent Brockman: This just in, the classical Greek civilization fell thousands of years ago. And I, for one, welcome back our Republican overlords.
Computer Model Proves GeoCentric Universe (Score:2, Interesting)
Re:Computer Model Proves GeoCentric Universe (Score:3, Insightful)
Neither scientist nor scientific process accepts models based on faith. Current theories in science are always based on best-fit models of the observable facts. No scientist claims that new models won't supplant older theories as newer, better, more accurate observations are made. But the burden of p
Re:How many truths are wrong? (Score:2)
IPod (Score:2, Funny)
"Technopolis"... (Score:2)
Um...small correction (Score:2)
Longitude Determination (Score:3, Informative)
http://www.21stcenturysciencetech.com/articles/Spr ing03/Antikythera.html [21stcentur...cetech.com]
Re:listen (Score:4, Funny)
Re:At least a 100 years ago. (Score:4, Funny)
Re:At least a 100 years ago. (Score:2)
Re:Navigation Aide (Score:4, Informative)
This clockwork planetary displaying device is (today) properly called an orrery, although it predates the Earl of Orrery by about 18 centuries. It also predates the astrolabe by about a thousand years, too.
Not that you can't use an orrery to occasionally tell the date, but much of the time you won't have enough information to get a valid reading. It's completely useless during the day, and even at night some of the planets are usually "too near" the sun to be visible. Occasionally, the planetary alignment is such that none of the "visible" planets can be seen for weeks at a time.
Also note that an orrery doesn't necessarily provide "altitude" information. I'm unaware of any hand-held clockwork orreries that do (including modern ones.) While you can base the date on azimuth readings of the planets, many of them move so slowly across the night sky that it could be difficult to make an accurate reading; especially with the tools of 87 B.C. The fixed stars are much easier to locate, and altitude is much, much easier to read than azimuth (gravity is a much easier reference to use than some concept of north.)
Re:yeah but... (Score:2, Funny)
It'll definately run Oracle
Re:How Wikipedia views slashdotians... (Score:3, Insightful)
By the same token, no one tags the inside of railroad cars...