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Na 2 (OC 6 H 4) 2 CMe 2 + COCl 2 → 1/n [OC(OC 6 H 4) 2 CMe 2] n + 2 NaCl In this way, approximately one billion kilograms of polycarbonate is produced annually. Many other diols have been tested in place of bisphenol A, e.g. 1,1-bis(4-hydroxyphenyl)cyclohexane and dihydroxybenzophenone .
LEBC2, the Lexan bubble chamber, which had a diameter of 20 cm and was made of transparent plastic. The construction of the LExan Bubble Chamber, LEBC, was approved by the CERN Research Board on 16 November 1978. [1] Bubble chambers are similar to cloud chambers, both in application and in basic principle.
1 (by definition) Air at STP: 1.000273 [citation needed] Gases at 0 °C and 1 atm Air: 589.29: 1.000293 [1] Carbon dioxide: 589.29: 1.00045 [2] [3] [4] Helium: 589.29: 1.000036 [1] Hydrogen: 589.29: 1.000132 [1] Liquids at 20 °C Arsenic trisulfide and sulfur in methylene iodide: 1.9 [5] Carbon disulfide: 589.29: 1.628 [1] Benzene: 589.29: 1. ...
To measure the tracking, 50 drops of 0.1% ammonium chloride solution are dropped on the material, and the voltage measured for a 3 mm thickness is considered representative of the material performance. Also term PTI (Proof Tracking Index) is used: it means voltage at which during testing on five samples the samples pass the test with no failures.
Although such information contains long lists of sieve sizes, in practice sieves are normally used in series in which each member sieve is selected to pass particles approximately 1/ √ 2 smaller in diameter or 1/2 smaller in cross-sectional area than the previous sieve. For example the series 80mm, 63, 40, 31.5, 20, 16, 14, 10, 8, 6.3, 4, 2.8 ...
The Holographic Lexan Bubble Chamber, HOLEBC, was a hydrogen bubble chamber. Bubble chambers are similar to cloud chambers , both in application and in basic principle. A chamber is normally made by filling a large cylinder with a liquid heated to just below its boiling point .
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