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Search results for: glass in all categories
282 results found.
29 pages of results.
1. EARLY GLASSMAKING AND CHRONOLOGICAL PUZZLES [Aeon Journal $]
... From: Aeon II:1 (1989) Home¦ Issue Contents Early Glassmaking And Chronological Puzzles Gunnar Heinsohn I wish to express my gratitude for the generous bibliographic assistance of Frau Faulstich (Library of the Deutsche Glastechnische Gesellschaft/Frankfurt/M.), Frau Herrmann (Library of the Museum für Kunst und Gewerbe/ Hamburg), and Herrn Zamia (Library of the Schott Glaswerke/Mainz am Rhein). The information available now on early Mesopotamian glass, while considerably greater than before, is still incomplete and full of gaps. The philological and archaeological evidence are both related but do no show a parallel development, nor do they share the same history. The glass objects do not 'illustrate' the history of this particular class of cuneiform literature and the texts are useless in helping us trace the typological history of early Mesopotamian glass vessels. Yet both belong to the history of glassmaking in this ancient cradle of civilisation. D. Barag, "Mesopotamian Core-Formed Glass Vessels (1500-500 B.C.)," in A. Leo Oppenhleim, R. H ...
2. Libya's Kebira Crater [Thunderbolts Website]
... picture of the day resources team a role for you contact us picture of the day archive subject index subject abstracts Landsat image of Kebira Crater in Egypt's Western desert, near the border with Libya.(Image: Boston University Center for Remote Sensing) Sep 29, 2006 Libya's Kebira Crater A huge crater in the Sahara desert, said to be the largest one ever found in the region, and dwarfing Arizona's "Meteor Crater", poses new questions for geologists. Is the crater related to the origins of the mysterious "desert glass" in the region? Scientists suggest that a meteorite impact millions of years ago is the cause of the giant crater imaged above. Recently discovered in satellite images of the area, the crater lies in Egypt's western desert. It is some 19 miles (31kilometers) wide and is said to be the impact site of a meteoric intruder perhaps three-fourths of a mile (1.2 kilometers) in diameter. The crater itself is more than 25 times the size of Arizona's famous Meteor Crater. But over time, erosion by wind and ...
3. Libya's Kebira Crater [Thunderbolts Website]
... two authors --a revolutionary synthesis of comparative mythology and the newly-discovered "Electric Universe". The Monograph includes an hour-long DVD introducing various aspects of the Electric Universe explained by members of the Thunderbolts Group. More Information Book Synopsis Read Chapter One Order Link Apr. 24, 2006 Libya's Kebira Crater A huge crater in the Sahara desert, said to be the largest one ever found in the region, and dwarfing Arizona's "Meteor Crater", poses new questions for geologists. Is the crater related to the origins of the mysterious "desert glass" in the region? Scientists suggest that a meteorite impact millions of years ago is the cause of the giant crater imaged above. Recently discovered in satellite images of the area, the crater lies in Egypt's western desert. It is some 19 miles (31kilometers) wide and is said to be the impact site of a meteoric intruder perhaps three-fourths of a mile (1.2 kilometers) in diameter. The crater itself is more than 25 times the size of Arizona's famous Meteor Crater. But over time, erosion by wind and ...
4. A Hypothetical Ancient Telescope [Horus $]
... G. Graham The telescope is traditionally thought to have been invented around 1608 and first used astronomically by Galileo in 1610. However, there are numerous instances of Renaissance "discoveries" actually being rediscoveries of ancient knowledge. Electroplating, mechanical clocks, steam engines, concentrating mirrors, and the circumnavigation of Africa are certain and sure examples. Since less than ten percent of the writings of the ancient world survive, it is likely there are many more examples of lost discoveries. Archaeological evidence from Pompeii shows that the ancient Romans used water-filled glass globes to magnify words on manuscripts. Later, and independently, the tailors and seamstresses of the Pennsylvania Harmonite Society discovered the uses of glass globes as lenses when these glass globes were filled with water, circa 1845. It's likely that the magnification abilities of glass globes filled with water have been discovered many times in the past and applied to practical problems of observation. Magnification by glass globe filled with water Glass globe lens in Old Economy, a Harmonite community. It was used for sewing I therefore decided to investigate the conjecture ...
5. What's Opera Doc? [SIS Internet Digest $]
... From: SIS Internet Digest 2000:1 (May 2000) Home¦ Issue Contents What's Opera Doc? Glass discusses opera at MFA Philip Glass, lecturing at the Museum of Fine Arts, December 4. A well-filled auditorium at the Museum of Fine Arts last Wednesday heard composer Philip Glass comment on his operas, Akhnaten in particular. The theme of the latter being Egyptian, it was left to the Museum's curator for Egyptian art to introduce Glass-- as the main composer since Verdi to gather inspiration around the Nile. The evening did not quite come up to expectations. Contact with Akhnaten's actual performance consisted of some ten slides and no more than a few minutes of taped music, and Glass's high-speed oral presentation left something to be desired, too. Still, there was a lot to be gained from listening to Glass who, after all, is one of today's most important composers, one, moreover, in a pivotal position on the verge of classical, pop and jazz. Known to the movie-going public through scores such as Koyaanisqatsi and more ...
6. Richat Crater Revisited (2) [Thunderbolts Website]
... It would be quite possible for a celestial body passing another celestial body to have its course altered by strong plasma discharges. Aouelloul Crater, Diameter 390 m. Aouelloul is located in Ordovician sandstones and quartzite in the western Sahara Desert, Mauritania and is one of the smaller craters. Again, in regard to "impact" evidence, the Global Impact Studies Project states: "The rim is well-defined and rises 15-25m above the local topography, and 53m above the crater floor....While breccias are not found at Aouelloul, impact glass can be found on the south, southeast, and north outer part of the crater rim. Because the glass is enriched in siderophile elements, has a low water content, and contains lechatelierite (a product of shock deformation), it has been interpreted as an impact glass." "Proving Allouelloul ’ s impact origin has proved extremely difficult.... Instead of relying on petrography, scientists have used chemical analysis to prove an impact origin here. While most of the glass is compositionally similar to the local Zli ...
7. Flotsam On The Great Sand Sea [Science Frontiers Website]
... 126: Nov-Dec 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Flotsam On The Great Sand Sea One of the strangest mysteries nestled among the giant dunes of the Egyptian Sahara was not recognized by modern scientists until 1932. In December of that year, P. Clayton, a surveyor for the Egyptian Geological Survey, was driving among the dunes near the Saad Plateau when he heard his tires crunch on something that wasn't sand. It turned out to be large pieces of marvelously clear yellow-green glass-- not just any glass but ultra-pure glass, 98% silica. As often the case, Clayton was not the first to come across the now-famous Libyan Desert Glass or LDG. Prehistoric humans had made knives and other sharp-edged tools from it; the ancient Egyptians had carved a scarab from LDG and deposited it in Tutankhamen's tomb. But Clayton and the ancients did not recognize the scientific implications of their discovery. LDG is the purest natural silica glass ever found. Over a thousand tons of it are strewn across hundreds of ...
8. On The Origin Of Tektites [Kronos $]
... originated on the Moon, especially during the excavation of such craters as Tycho which Velikovsky had earlier attributed to interplanetary discharges.(8) Moreover, I also pointed out that, despite the wealth of lunar geologic material which the U. S. astronauts succeeded in returning to Earth, in no way could it be said that the few and scattered manned landings on the Moon had "dispelled" such an origin for tektites. When I wrote my 1975 article, I was unaware of the existence of a paper, "Tektite Glass in Apollo 12 Sample," written by John A. O'Keefe of the Laboratory for Space Physics, Goddard Space Flight Center, which appeared in the June 5, 1970 issue of Science. In that article, O'Keefe analyzed the comparison of one of the lunar rocks (sample# 12013), returned by the team of Apollo 12, with javanites (tektites from Java) and other terrestrial rocks. The result of this analysis showed clearly that sample# 12013 "is more like the javanites than like the terrestrial rocks, ...
9. Thoth Vol. III, No. 10 July 30, 1999 [Thoth Website]
... concluded that oceans played only a minor role in the Sahara's desertification.---- SAHARA'S ABRUPT DESERTIFICATION-- II By Wal Thornhill On 12 July I wrote:... I would like to know where all of the sand [in the Sahara came from too. As if in answer to my rhetorical question, on the 16th I saw a featured article in New Scientist of 10 July titled "The riddle of the Sands". The subtext reads: "Deep in the Sahara lie vast deposits of incredibly pure glass. Nothing on Earth could have created them." It mentions the green glass forming the heart of a scarab found in Tutankhamen's tomb that is made of such glass. Walter Alter had written about this subject on 7 April and it was reprinted in Thoth III-8:... An Italian geologist has taken a close look at the beautiful translucent scarab in a pectoral, or necklace, found by Howard Carter among the treasures of Tutankhamen. Carter thought the scarab was carved of greenish-yellow chalcedony. However, measuring its refraction revealed ...
10. Libyan Desert Glass [Science Frontiers Website]
... Science Frontiers ONLINE No. 64: Jul-Aug 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Libyan Desert Glass Pieces of Libyan Desert Glass weighing as much as 16 pounds are found in an oval area measuring approximately 130 by 53 kilometers. The clear-to-yellowish-green pieces are concentrated in sand-free corridors between north-south dune ridges. The origin of this immense deposit of glass has been attributed by some to ancient nuclear explosions and alien activities, but investigating scientists have always been satisfied with a meteor-impact hypothesis. A recent study (abstract below) also opts for this explanation, although no one has found a crater of suitable size or other supporting evidence. "Libyan Desert Glass (LDG) represents 1.4 x 10 9 g of natural glass fragments scattered over about 6500 km 2 of the western Desert of Egypt. We made a systematic study (employing INAA, microprobe and mass spectrometry techniques) of several varieties of LDG and locally associated sand and sandstone to provide insight into the nature and formation of these enigmatic glass fragments. These studies ...
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