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  2. Indian-head test pattern - Wikipedia

    en.wikipedia.org/wiki/Indian-head_test_pattern

    Indian-head test pattern. The Indian-head test pattern is a test card that gained widespread adoption during the black-and-white television broadcasting era as an aid in the calibration of television equipment. It features a drawing of a Native American wearing a headdress surrounded by numerous graphic elements designed to test different ...

  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. It is widely used in optical engineering laboratory work to analyze and ...

  4. Test card - Wikipedia

    en.wikipedia.org/wiki/Test_card

    Test card. A test card, also known as a test pattern or start-up/closedown test, is a television test signal, typically broadcast at times when the transmitter is active but no program is being broadcast (often at sign-on and sign-off ). [1]

  5. 12 Tips for Computer Eye Strain Relief - Healthline

    www.healthline.com/.../computer-use

    headaches. neck and shoulder pain. Here are 12 steps you can take to reduce eye dryness and strain. 1. Adjust your glasses. If you wear glasses, talk with your eye doctor about anti-reflective ...

  6. Shadow mapping - Wikipedia

    en.wikipedia.org/wiki/Shadow_mapping

    To test a point against the depth map, its position in the scene coordinates must be transformed into the equivalent position as seen by the light. This is accomplished by a matrix multiplication . The location of the object on the screen is determined by the usual coordinate transformation , but a second set of coordinates must be generated to ...

  7. Automatic test pattern generation - Wikipedia

    en.wikipedia.org/wiki/Automatic_test_pattern...

    Automatic test pattern generation. ATPG (acronym for both automatic test pattern generation and automatic test pattern generator) is an electronic design automation method or technology used to find an input (or test) sequence that, when applied to a digital circuit, enables automatic test equipment to distinguish between the correct circuit ...

  8. Antinuclear Antibodies (ANA) Test: Results, Positive vs ...

    www.webmd.com/a-to-z-guides/what-is-an...

    Antinuclear Body Test Risks. The blood test has very few risks. You might feel a slight sting as your blood is drawn. You may notice a small bruise later.. You may also have a slight chance of:

  9. TOVA Testing for ADHD: Format, Objectives, and Reliability

    www.healthline.com/health/adhd/tova-testing-for-adhd

    TOVA is a continuous performance test (CPT) used to evaluate attention-related difficulties and symptoms associated with ADHD. By presenting visual stimuli and analyzing your responses, it ...

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