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  2. Five Eyes - Wikipedia

    en.wikipedia.org/wiki/Five_Eyes

    The Five Eyes ( FVEY) is an Anglosphere intelligence alliance comprising Australia, Canada, New Zealand, the United Kingdom, and the United States. [1] These countries are parties to the multilateral UK-USA Agreement, a treaty for joint cooperation in signals intelligence. [2] [3] [4] Informally, Five Eyes can refer to the group of intelligence ...

  3. Nikon F3 - Wikipedia

    en.wikipedia.org/wiki/Nikon_F3

    The Nikon F3 was Nikon 's third professional single-lens reflex camera body, preceded by the F and F2. Introduced in March 1980, it had manual and semi-automatic exposure control whereby the camera would select the correct shutter speed (aperture priority automation). The Nikon F3 series cameras had the most model variations of any Nikon F camera.

  4. Eye care professional - Wikipedia

    en.wikipedia.org/wiki/Eye_care_professional

    Optometrist. Optometrists are healthcare professionals with a degree in eye care, specifically. In the United States and Canada, they are Doctors of Optometry (O.D.) - this includes optical, medical and some surgical eye care. Their training typically includes four years of college followed by four years of eye specific training (Optometry school).

  5. Rhind Mathematical Papyrus - Wikipedia

    en.wikipedia.org/wiki/Rhind_Mathematical_Papyrus

    Problems 1–6 compute divisions of a certain number of loaves of bread by 10 men and record the outcome in unit fractions. Problems 7–20 show how to multiply the expressions 1 + 1/2 + 1/4 = 7/4, and 1 + 2/3 + 1/3 = 2 by different fractions. Problems 21–23 are problems in completion, which in modern notation are simply subtraction problems.

  6. High-speed photography - Wikipedia

    en.wikipedia.org/wiki/High-speed_photography

    Muybridge's photographic sequence of a race horse galloping, first published in 1878.. High-speed photography is the science of taking pictures of very fast phenomena. In 1948, the Society of Motion Picture and Television Engineers (SMPTE) defined high-speed photography as any set of photographs captured by a camera capable of 69 frames per second or greater, and of at least three consecutive ...

  7. LCD projector - Wikipedia

    en.wikipedia.org/wiki/LCD_projector

    LCD projector. An LCD projector is a type of video projector for displaying video, images or computer data on a screen or other flat surface. It is a modern equivalent of the slide projector or overhead projector. To display images, LCD ( liquid-crystal display) projectors typically send light from a metal-halide lamp through a prism or series ...

  8. Ganzfeld experiment - Wikipedia

    en.wikipedia.org/wiki/Ganzfeld_experiment

    Ganzfeld experiment. A ganzfeld experiment (from the German words for "entire" and "field") is an assessment used by parapsychologists that they contend can test for extrasensory perception (ESP) or telepathy. In these experiments, a "sender" attempts to mentally transmit an image to a "receiver" who is in a state of sensory deprivation.

  9. Cover test - Wikipedia

    en.wikipedia.org/wiki/Cover_test

    Cover test. A cover test or cover-uncover test is an objective determination of the presence and amount of ocular deviation. It is typically performed by orthoptists, ophthalmologists and optometrists during eye examinations . The two primary types of cover tests are: the alternating cover test. the unilateral cover test (or the cover-uncover ...

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