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Three treatment options are available: glasses, contact lenses, and surgery. Glasses are the simplest. Contact lenses can provide a wider field of vision and fewer artifacts than even double aspheric lenses. Refractive surgery aims to permanently change the shape of the eye and thereby cure astigmatism.
A zoom lens, a system of camera lens elements for which the focal length and angle of view can be varied. Size ratio (optical magnification) [ edit ] Optical magnification is the ratio between the apparent size of an object (or its size in an image) and its true size, and thus it is a dimensionless number .
Coupon collector's problem. In probability theory, the coupon collector's problem refers to mathematical analysis of "collect all coupons and win" contests. It asks the following question: If each box of a brand of cereals contains a coupon, and there are n different types of coupons, what is the probability that more than t boxes need to be ...
July 9, 1967 – August 15, 1967 (37 days) (medical separation) Unit. United States Army Reserve. Mitch McConnell's voice. McConnell speaks on Senate bipartisanship in his first speech as Majority Leader. Recorded January 7, 2015. Addison Mitchell McConnell III [1] ( / məˈkɒnəl / mə-KON-əl; born February 20, 1942) is an American ...
Bruce Nordstrom’s work ethic was so pronounced that at 23, he used his 30-minute lunch break to propose to Fran Wakeman, whom he met in his freshman year of college.
In finance, a coupon is the interest payment received by a bondholder from the date of issuance until the date of maturity of a bond . Coupons are normally described in terms of the "coupon rate", which is calculated by adding the sum of coupons paid per year and dividing it by the bond's face value. For example, if a bond has a face value of ...
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