Search results
Results from the WOW.Com Content Network
Patent priority was resolved in Bayer's favor, and Bayer began commercial production under the trade name Makrolon in 1958. GE began production under the name Lexan in 1960, creating the GE Plastics division in 1973. [29] After 1970, the original brownish polycarbonate tint was improved to "glass-clear".
Standard refractive index measurements are taken at the "yellow doublet" sodium D line, with a wavelength (λ) of 589 nanometers. There are also weaker dependencies on temperature , pressure / stress , etc., as well on precise material compositions (presence of dopants , etc.); for many materials and typical conditions, however, these ...
It has a density of 1.17–1.20 g/cm 3, [1] [16] which is approximately half that of glass, which is generally, depending on composition, 2.2–2.53 g/cm 3. [1] It also has good impact strength, higher than both glass and polystyrene, but significantly lower than polycarbonate and some engineered polymers.
Aerogel is a very low density solid that can be produced with refractive index in the range from 1.002 to 1.265. [16] Moissanite lies at the other end of the range with a refractive index as high as 2.65.
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.
The Mever-Rassler alloy has a density of 2.63 g cm −1. Mever-Rassler, F., Metallwirtschaft. 19, 713–21, 1940 in Volume 1 pages 478, 479 and 1464. [8]
Dr. Aseem Malhotra, a cardiologist and public health campaigner based in London, says Americans' foods are fueling chronic diseases. He shares his warnings and tips with Fox News Digital.
MFI Measuring device. The Melt Flow Index (MFI) is a measure of the ease of flow of the melt of a thermoplastic polymer.It is defined as the mass of polymer, in grams, flowing in ten minutes through a capillary of a specific diameter and length by a pressure applied via prescribed alternative gravimetric weights for alternative prescribed temperatures.