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Fine Art Beginning: This new flint glass was heavier and more brilliant than the soda-lime metal, had a light-dispersing quality, and exceptional interior fire which lent itself well to cut decoration. The mixture underwent some improvements, but by the turn of the 18th century it was being produced by nearly 100 English glass furnaces. By then sand had replaced flint, but the name "flint" stuck for all fine art beginning heavy glass with lead content. Makers of fine art beginning blown and cut glass used this metal only and produced a long line of fine art beginning wineglasses made with several types of stems, starting with the baluster shape and going on to hollow, air, twist, cotton thread, and facet cut. These continued until the beginning of the 19th century. At the same time some fine art beginning commemorative and presentation goblets and wineglasses with bowls beautifully engraved in appropriate designs were also produced.
The most important eras were the Spanish era, beginning Jan. 1, 38 B. c., the era of Diocletian, beginning Aug. 29, A. D. 284, the era of the Armenians, beginning July 9, 552, and the Christian era, which, during the Middle Ages, was a confusing system because the beginning of the year was set at different days in different countries. Some countries reckoned the beginning of the era during the year before, others during the year after, the birth of Christ. Dionysius Exiguus, the originator of the era in the 6th century, set its commencement on Annunciation Day, March 25, nine months before the traditional date for the birth of Christ. Other days for the beginning of the Christian Era were January 1, March 1, Christmas Day, and Easter. Modern scholars have not reached agreement on the actual date of the birth of Christ. Many favor 4 B. c., others 6, 7, and 8 B. c.
Until 1967 optical methods seemed to be the only means of astronomical observation that could offer high quality resolution, or sharpness of detail. In that year observation by radio telescopes suddenly forged far ahead. The best optical telescopes had not been able to resolve extremely fine art beginning detail, although certain special optical methods were better than others but could work only with the brighter stars. Radio astronomy, which had its beginning before World War II, had contributed much to astronomical knowledge, but in almost all cases it could not achieve as fine art beginning resolution as could optical methods. |
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