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Abbe number. In optics and lens design, the Abbe number, also known as the V-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 V indicating low dispersion. It is named after Ernst Abbe (1840–1905), the German physicist ...
One must bear in mind that the human eye itself has an Abbe number V d ≈ 50.2 so the expensive, high-end optical glass types mentioned above have little value for central vision; however, the wearer's view through the side of a glass lens is not comparable to central vision through the eye: Low dispersion glass definitely makes optically ...
Chromatic aberration. Focal length of lens varies with the color of light. In optics, chromatic aberration ( CA ), also called chromatic distortion, color aberration, color fringing, or purple fringing, is a failure of a lens to focus all colors to the same point. [ 1][ 2] It is caused by dispersion: the refractive index of the lens elements ...
An optical instrument is said to be diffraction-limited if it has reached this limit of resolution performance. Other factors may affect an optical system's performance, such as lens imperfections or aberrations, but these are caused by errors in the manufacture or calculation of a lens, whereas the diffraction limit is the maximum resolution ...
Ohio auto insurance requirements are referred to as the 25/50/25 rule. This means that drivers are required to maintain the following levels of coverage: $25,000 in bodily injury liability ...
Ohio law requires all drivers to carry minimum levels of liability car insurance coverage, including: $25,000 per person in bodily injury liability. $50,000 per accident in bodily injury liability ...
The Ohio Department of Insurance was established on March 12, 1872. It was created under the authority of section 121.02 of the Ohio Revised Code (ORC) and is administered by the Director of Insurance. Insurance companies operating in the state of Ohio are subject to regulation under Title 39; and depending upon the entity of the organization ...
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