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2. 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]

3. How to Read Your Audiogram - Healthline

   www.healthline.com/health/audiogram

   How to read your results. You may be able to glance at your audiogram to determine whether you have hearing loss: A steady line connecting your threshold levels at the top of the chart indicates ...

4. 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 ...

5. 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 ...

6. 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 ...

7. Antinuclear Antibody Panel: Purpose, Results, and Risks

   www.healthline.com/health/antinuclear-antibody-panel

   Antibodies are proteins made by your immune system. They help your body recognize and fight infections. Antibodies normally target harmful substances, such as bacteria and viruses, by activating ...

8. Food Calculator: Carbs, Calories, Fat, Protein and More - WebMD

   www.webmd.com/diet/healthtool-food-calorie-counter

   Get the nutrition lowdown on all your meals and everything in between. Find out the calories, carbs, fat, fiber, and more in over 37,000 foods and drinks. Whether you're eating out or dining in ...

9. Phosphate Blood Test: Purpose, High vs. Low vs. Normal Levels

   www.webmd.com/a-to-z-guides/phosphate-blood-test

   A phosphate test measures the amount of phosphate in your blood. If that sounds too simple, stay tuned for a slight curveball. Phosphate is what you get when you combine the mineral phosphorus ...