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  2. Sloan letters - Wikipedia

    en.wikipedia.org/wiki/Sloan_letters

    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 ]

  3. 1951 USAF resolution test chart - Wikipedia

    en.wikipedia.org/.../1951_USAF_resolution_test_chart

    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.

  4. Category:Test cards - Wikipedia

    en.wikipedia.org/wiki/Category:Test_cards

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

  5. Otters at Georgia Aquarium test positive for Covid-19 - AOL

    www.aol.com/otters-georgia-aquarium-test...

    The aquarium expects the otters to make full recoveries. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Mail. Sign in ...

  6. List of largest aquariums - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_aquariums

    Large aquariums exhibit a wide variety of species and animals in a large range of tanks. These are typically public aquariums and may also include oceanariums and dolphinariums, designed to showcase a diverse range of marine animals for the public. In operation Only aquariums with a total capacity of more than 10 million litres and/or a tank larger than 5 million litres are included in the ...

  7. EIA 1956 resolution chart - Wikipedia

    en.wikipedia.org/wiki/EIA_1956_resolution_chart

    The RMA 1946 Resolution Chart was transmitted by NTS and NOS in the Netherlands, SRG SSR in Switzerland, [18] VRT and RTBF in Belgium, RTP in Portugal, TVP in Poland, TVB in Hong Kong, [citation needed] Venevisión in Venezuela (525-lines variant; in conjunction with Indian-head test pattern), [citation needed] WISN-TV in Milwaukee, Wisconsin (525-lines variant) [19] and on low-powered ...

  8. AOL Mail

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. File:Snellen chart.svg - Wikipedia

    en.wikipedia.org/wiki/File:Snellen_chart.svg

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

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