Ads
related to: 1.61 vs 1.67 high indexzennioptical.com has been visited by 100K+ users in the past month
ebay.com has been visited by 1M+ users in the past month
glassesusa.com has been visited by 100K+ users in the past month
Search results
Results from the WOW.Com Content Network
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 ...
In optics and lens design, the Abbe number, also known as the Vd-number or constringence of a transparent material, is an approximate measure of the material's dispersion (change of refractive index versus wavelength), with high values of Vd indicating low dispersion.
Flint glass is optical glass that has relatively high refractive index and low Abbe number (high dispersion). Flint glasses are arbitrarily defined as having an Abbe number of 50 to 55 or less. The currently known flint glasses have refractive indices ranging between 1.45 and 2.00.
Known as APS-H (30.2 mm × 16.7 mm), with the "-H" denoting "High Definition", the 16:9 format is also the standard image aspect ratio for HDTV. 16:9 is gaining popularity as a format in all classes of consumer still cameras which also shoot High Definition video. When still cameras have an HD video capability, some can also record stills in ...
548 mm 2 area Canon's APS-H format for high-speed pro-level DSLRs (crop factor 1.3). Current 1D/5D-series sensors are effectively full-frame (crop factor 1.0). 548 mm 2 area APS-H format for the high-end mirrorless SD Quattro H from Sigma (crop factor 1.35) 370 mm 2 area APS-C crop factor 1.5 format from Epson, Samsung NX, Konica Minolta.
High income 27.96 2016 United Arab Emirates: Western Asia: High income 26.4 2018 25.97 2019 Argentina: South America: Upper middle income 40.7 2022 37.80 2022 Armenia: Western Asia: Upper middle income 27.9 2022 27.94 2021 Australia: Australia and New Zealand: High income 34.3 2018 34.33 2018 Austria: Western Europe: High income 30.7
Ads
related to: 1.61 vs 1.67 high indexzennioptical.com has been visited by 100K+ users in the past month
ebay.com has been visited by 1M+ users in the past month
glassesusa.com has been visited by 100K+ users in the past month