. Bulletin - United States National Museum. Science. ated in degrees of the zodiac (this is, incidentally, the oldest engraved scale known, and micrometric measurements on photographs have indicated a maxi- mum inaccuracy of about '2° in the 45° jiresent). Unfortunately, the very difhciili task of cleaning the fragments is slow, and no publication has yet given suflicient detail for an adequate explanation of this object. One can only say that although the probleins Figure 7.—Antikythera Machine, Two Smaller Fragments. (Pholo courtesy of National Museum, Athens.) of restoration and mechanical
. Bulletin - United States National Museum. Science. ated in degrees of the zodiac (this is, incidentally, the oldest engraved scale known, and micrometric measurements on photographs have indicated a maxi- mum inaccuracy of about '2° in the 45° jiresent). Unfortunately, the very difhciili task of cleaning the fragments is slow, and no publication has yet given suflicient detail for an adequate explanation of this object. One can only say that although the probleins Figure 7.—Antikythera Machine, Two Smaller Fragments. (Pholo courtesy of National Museum, Athens.) of restoration and mechanical analysis are peculiarly great, this must stand as the most important scientific artifact preserved from antiquity. Some technical details can be gleaned however. The shape of the gear teeth appears to be almost exactly equilateral triangles in all cases (fig. 8), and square shanks may be .seen at the centers of some of the wheels. Xo wheel is C|uite complete enough for a count of sear iceih, but a provisional reconstruc- tion by Theophanidis (hi?. 9) has shown that the ap- pearances are consistent wiih (lie theory that the. PAPER 6: , I'KRI'KTLAL .\10 DliXICtiS, AND IlIK 93. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
Size: 1616px × 1546px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
