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The magnifying power obtained in this condition is MP 0 = (0.25 m)Φ + 1, where Φ is the optical power in dioptres, and the factor of 0.25 m represents the assumed near point (¼ m from the eye). This value of the magnifying power is the one normally used to characterize magnifiers.
Global Insight, which conducted the research that supported the ads, found that Wal-Mart's price level reduction resulted in savings for consumers of $287 billion in 2006, which equated to $957 per person or $2,500 per household (up 7.3 percent from the 2004 savings estimate of $2,329). [64]
The constant 25 cm is an estimate of the "near point" distance of the eye—the closest distance at which the healthy naked eye can focus. In this case the angular magnification is independent from the distance kept between the eye and the magnifying glass.
The latter of the two cannibalized the Walmart-owned warehouse store to create one of the largest retail stores in the U.S., employing about 360 associates, according to Walmart.
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A magnifier is a device used for magnification. Magnifier can also refer to: Magnifying glass, an optical device for magnification; Screen magnifier, software that magnifies part of a computer screen Magnifier (Windows), a screen magnifier for Microsoft Windows; Magnifier (iOS), a magnifying glass app for iOS; Magnifier, a magnifying glass app ...
Wal-Mart: The High Cost of Low Price is a 2005 documentary film by director Robert Greenwald and Brave New Films about the American multinational corporation and retail conglomerate Walmart. [2] The film presents a negative picture of Walmart's business practices through interviews with former employees, small business owners, and footage of ...
The MNREAD acuity chart or Minnesota low vision reading chart is a text based chart used to measure near visual acuity in people with normal or low vision. [1] It can also be used to measure maximum reading speed, critical print size and the reading accessibility index of a person. [2] Digital and printed types of charts are available. [3]