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  2. Magnification - Wikipedia

    en.wikipedia.org/wiki/Magnification

    Optical magnification is the ratio between the apparent size of an object (or its size in an image) and its true size, and thus it is a dimensionless number. Optical magnification is sometimes referred to as "power" (for example "10× power"), although this can lead to confusion with optical power.

  3. Use-wear analysis - Wikipedia

    en.wikipedia.org/wiki/Use-wear_analysis

    Additionally, the experiments must last an acceptable amount of time; slicing an object once will not suffice and requires countless attempts per tool and per material used upon. One example notes how Méry conducted use-wear analysis and experimental archaeology to examine 7 flint blades from a pottery workshop of Nausharo site in Pakistan ...

  4. Optical microscope - Wikipedia

    en.wikipedia.org/wiki/Optical_microscope

    For example a 10x eyepiece magnification and a 100x objective lens magnification gives a total magnification of 1,000×. Modified environments such as the use of oil or ultraviolet light can increase the resolution and allow for resolved details at magnifications larger than 1,000x. [citation needed]

  5. Optical telescope - Wikipedia

    en.wikipedia.org/wiki/Optical_telescope

    The telescope is more a discovery of optical craftsmen than an invention of a scientist. [1] [2] The lens and the properties of refracting and reflecting light had been known since antiquity, and theory on how they worked was developed by ancient Greek philosophers, preserved and expanded on in the medieval Islamic world, and had reached a significantly advanced state by the time of the ...

  6. Magnifying glass - Wikipedia

    en.wikipedia.org/wiki/Magnifying_glass

    The magnification of a magnifying glass depends upon where it is placed between the user's eye and the object being viewed, and the total distance between them. The magnifying power is equivalent to angular magnification (this should not be confused with optical power, which is a different quantity).

  7. Stereo microscope - Wikipedia

    en.wikipedia.org/wiki/Stereo_microscope

    The stereo, stereoscopic or dissecting microscope is an optical microscope variant designed for low magnification observation of a sample, typically using light reflected from the surface of an object rather than transmitted through it. The instrument uses two separate optical paths with two objectives and eyepieces to provide slightly ...

  8. Angular resolution - Wikipedia

    en.wikipedia.org/wiki/Angular_resolution

    Resolving power is the ability of an imaging device to separate (i.e., to see as distinct) points of an object that are located at a small angular distance or it is the power of an optical instrument to separate far away objects, that are close together, into individual images.

  9. Camera lucida - Wikipedia

    en.wikipedia.org/wiki/Camera_lucida

    Camera lucida in use. A camera lucida is an optical device used as a drawing aid by artists and microscopists.It projects an optical superimposition of the subject being viewed onto the surface upon which the artist is drawing.