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Sloan letters, designed by Louise Sloan in 1959, are a set of optotypes used to test visual acuity generally used in Snellen charts and logMAR charts. This set of optotypes consists of ten specially formed "letters", C, D, H, K, N, O, R, S, V and Z. [ 1 ] These letters, unlike the ones used in older Snellen charts, are designed to give acuity ...
A person taking the test covers one eye from 6 metres or 20 feet away, and reads aloud the letters of each row, beginning at the top. The smallest row that can be read accurately indicates the visual acuity in that specific eye. The symbols on an acuity chart are formally known as "optotypes". Variation of Snellen chart with another letter ...
The United States Marine Corps requires that all Marines perform a Physical Fitness Test (PFT) and a Combat Fitness Test (CFT) once each calendar year. The PFT is conducted between January 1 and June 30, [1] and the CFT is conducted between July 1 and December 31. [2] The same standards apply for reservists.
A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens.
Amount of time it takes to row 500 meters. Displayed on all ergs and on coxboxes installed on boats with speed coaches (see above). Square To turn the oar so that its blade is perpendicular to the water (opposite of feather). Stern check The feeling of the boat stopping or moving backward in the water at the start of the drive.
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The 500 metres is an uncommon middle-distance running event in track and field and road running competitions. All-time top 25. i = indoor performance;
As Freddie Eugene Owens lives the last hours of his life, USA TODAY is sharing some of the South Carolina death row inmate's handwritten letters to a woman he loved. At times furious and at others ...