And his personal selection of his 25 least sucky posts. Go congratulate him.
Also, Parisian nude models strike over pay. Please show your support.
2000-year-old Greek celestial computer reconstructed.
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That Antikythera is amazing.
Antikythera is a speculative reconstruction. Not wrong, but speculative.
They have pretty good x-rays of the gears and even markings on the brass. Do you mean they’ve added parts that are missing from the original?
Iowahawk is very mysterious to me. Has he ever commented here before ever?
I can remember once at least hf. Only a few months ago even.
The amazing part isn’t that it exists,the antikythera, but that there were artisans with the machines to manufacture precise gears and shafts. The cutting of gears requires a solid repeatable system to devide a circle.Which also implies a sophisticated system ot metrology.
All of the parts are amazing, Rusty.
The solid repeatable system you want to look for Rusty is a human brain crammed full of mathematics capable of systematizing the motions of the spheres, a thing the Greeks had in some abundance. Cutting one-off chunks of brass with precision isn’t really that big a deal in comparison, I don’t think.
when he comments does he use “Iowahawk” for his name?
I think he uses his Burge name. can’t remember the first name…
Dave Burge is what he used, I think.
Sed. It doesn’t seem so , but divide that circle into even, small teeth that must mesh with precision is a very difficult thing. The accuracy of the machine is directly linked to how accurate ALL the parts are.In any mechanical system errors tend to accumulate.Any variation in the relationship of even one tooth in a cog to another will effect the accuracy. If you think that isn’t difficult, keep in mind truly accurate clocks werent commonplace until late in the 18th century. think of what these guys could have accomplished if they had the concept of a coil spring.
Don’t you have to begin with theoretical ratios Rusty? It is harder to get them (starting from scratch, so to speak) I think, than to inscribe a circle (or two) with those ratios on a piece of brass, or a hundred and then apply a file or knife to the project. Excellent light, good eyes, steady skilled hands, well made tools for the jobs to be done, an enduring purpose, none of that is to be dismissed lightly (and I do not, having done something like this kind of work myself), but the underlying mathema is, to me at least, far more wondrous.
No. No. That’s a given. But the execution takes an equal amount of talent. Making the theoretical real. The difference between E=mc2 and an actual working bomb. The ability to achieve a measurement in the millionths of an inch was done in the late 1600s, making a standard for the guilds to use. Routinely manufacturing in the millionmths of an inch wasnt achieved until the middle of the last century.
You can conceive and draw an accurate representation of a gear, but you still have to build the machine that will accurately divide and cut those gear teeth. Not on just one gear, but on all of them. Each gear not only accurate and precise in itself , but also in relation to every other gear. Any error is multiplied by the number of components it comes in contact with. A progressive accumulation of errors if you will. It is something engineers struggle with even today.
There is no doubt that the idea was-still is- brilliant. The execution, in my opinion, was equally as brilliant. It may have been the same the mind.
it makes you speculate. What other marvels have been lost?