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Teflon was discovered by Roy Plunkett in 1938 while he was attempting to develop a new kind of refrigerant (remember CFC’s). One of the compounds polymerized while in a storage container and its non-stick properties were soon recognized as unlike any other chemical. The official patent was acquired by DuPont in 1941. Structurally, Teflon consists [...]
source: http://www.appliedcolorscience.com/black_sun.htm Image sensors used in today’s video and digital still cameras have come a long way from the grainy, noisy low-resolution devices of 15 years ago. The improvement in image quality has been especially dramatic in CMOS sensors. First generation CMOS sensors (circa 1990), were arrays of 256 X 256 photodiodes that required a [...]
