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  2. Magnification - Wikipedia

    en.wikipedia.org/wiki/Magnification

    Images displayed on a computer screen change size based on the size of the screen. A scale bar (or micron bar) is a bar of stated length superimposed on a picture. When the picture is resized the bar will be resized in proportion. If a picture has a scale bar, the actual magnification can easily be calculated.

  3. 1951 USAF resolution test chart - Wikipedia

    en.wikipedia.org/wiki/1951_USAF_resolution_test...

    Glass 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. Objective (optics) - Wikipedia

    en.wikipedia.org/wiki/Objective_(optics)

    One of the most important properties of microscope objectives is their magnification.The magnification typically ranges from 4× to 100×. It is combined with the magnification of the eyepiece to determine the overall magnification of the microscope; a 4× objective with a 10× eyepiece produces an image that is 40 times the size of the object.

  5. Micrograph - Wikipedia

    en.wikipedia.org/wiki/Micrograph

    Magnification is a ratio between the size of an object on a picture and its real size. Magnification can be a misleading parameter as it depends on the final size of a printed picture and therefore varies with picture size. A scale bar, or micron bar, is a line of known length displayed on a picture. The bar can be used for measurements on a ...

  6. List of instruments used in otorhinolaryngology, head and ...

    en.wikipedia.org/wiki/List_of_instruments_used...

    Head Mirror with head band: to focus light into the cavity under inspection; mirror is concave and is used with a Chiron lamp to produce a parallel beam of light; doctor views through the hole (average diameter of mirror is 3 & 1/2" & that of hole is 1/4") Head mounted lights with head band: to focus light into the cavity under inspection ...

  7. Report: Wisconsin general fund had $4.5B balance, $1.9B in ...

    www.aol.com/news/report-wisconsin-general-fund...

    (The Center Square) – Wisconsin’s state general fund balance was $4.5 billion as expected, according to the recently released state Annual Comprehensive Financial Report. The rainy-day fund ...

  8. Scale (ratio) - Wikipedia

    en.wikipedia.org/wiki/Scale_(ratio)

    The scale can be expressed in four ways: in words (a lexical scale), as a ratio, as a fraction and as a graphical (bar) scale. Thus on an architect's drawing one might read 'one centimeter to one meter', 1:100, 1/100, or ⁠ 1 / 100 ⁠. A bar scale would also normally appear on the drawing.

  9. 'Never any consensus': UN plastics conference fails to yield ...

    www.aol.com/never-consensus-un-plastics...

    BUSAN, South Korea − Countries negotiating a global treaty to curb plastic pollution failed to reach an agreement late Sunday, with more than 100 nations seeking to cap production while a ...

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