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  2. Optical tweezers - Wikipedia

    en.wikipedia.org/wiki/Optical_tweezers

    By patterning the surface with gold microscopic islands it is possible to have selective and parallel trapping in these islands. The forces of the latter optical tweezers lie in the femtonewton range. [72] The evanescent field can also be used to trap cold atoms and molecules near the surface of an optical waveguide or optical nanofiber. [73] [74]

  3. 30 Color Photos Photographers Took 100 Years Ago That Still ...

    www.aol.com/44-old-color-photos-showing...

    Image credits: Detroit Photograph Company "There was a two-color process invented around 1913 by Kodak that used two glass plates in contact with each other, one being red-orange and the other ...

  4. Tweezers - Wikipedia

    en.wikipedia.org/wiki/Tweezers

    Tweezers come in a variety of tip shapes and sizes. [4] Blunt tip tweezers have a rounded end which can be used when a pointed object may get entangled, when manipulating cotton swabs, for example. Flat tip tweezers, pictured at right, have an angled tip which may be used for removing splinters. Some tweezers have a long needle-like tip which ...

  5. Stanhope (optical bijou) - Wikipedia

    en.wikipedia.org/wiki/Stanhope_(optical_bijou)

    A stanhope or stanho-scope is an optical device that enables the viewing of microphotographs without using a microscope. [ 1 ] [ 2 ] They were invented by René Dagron in 1857. [ 1 ] Dagron bypassed the need for an expensive microscope to view the microscopic photographs by attaching the microphotograph at the end of a modified Stanhope lens ...

  6. NYT ‘Connections’ Hints and Answers Today, Saturday, December 14

    www.aol.com/nyt-connections-hints-answers-today...

    Spoilers ahead! We've warned you. We mean it. Read no further until you really want some clues or you've completely given up and want the answers ASAP. Get ready for all of today's NYT ...

  7. List of oldest eyewear companies - Wikipedia

    en.wikipedia.org/wiki/List_of_oldest_eyewear...

    This page provides a list of the oldest brands and companies operating only in the eyewear manufacturing business to date and in any country. "Eyewear", although a relatively modern terminology, refers to the category of all items and accessories worn over the eyes for fashion adornment, protection against the environment and medical issues, including glasses (also called eyeglasses or ...

  8. Doctors Explain How To Spot Symptoms Of Bird Flu After First ...

    www.aol.com/doctors-explain-spot-symptoms-bird...

    The first patient in the U.S. was hospitalized with "severe" bird flu. Here's what you should know about symptoms, according to an infectious disease expert.

  9. Timeline of microscope technology - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_microscope...

    The company of Carl Zeiss exploited this discovery and becomes the dominant microscope manufacturer of its era. 1928: Edward Hutchinson Synge publishes theory underlying the near-field scanning optical microscope; 1931: Max Knoll and Ernst Ruska start to build the first electron microscope. It is a transmission electron microscope (TEM).

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