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  2. Zacharias Janssen - Wikipedia

    en.wikipedia.org/wiki/Zacharias_Janssen

    Zacharias Janssen; also Zacharias Jansen or Sacharias Jansen; 1585 – pre-1632 [1]) was a Dutch spectacle-maker who lived most of his life in Middelburg.He is associated with the invention of the first optical telescope and/or the first truly compound microscope, but these claims (made 20 years after his death) may be fabrications put forward by his son.

  3. Optical microscope - Wikipedia

    en.wikipedia.org/wiki/Optical_microscope

    The optical microscope, also referred to as a light microscope, is a type of microscope that commonly uses visible light and a system of lenses to generate magnified images of small objects. Optical microscopes are the oldest design of microscope and were possibly invented in their present compound form in the 17th century.

  4. 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).

  5. 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 ...

  6. What Is Low Testosterone & What Causes It? - AOL

    www.aol.com/low-testosterone-causes-125700734.html

    Testosterone is the primary androgen — or male hormone — in your body. Low testosterone affects up to 39 percent of adult men in the US over the age of 45, and becomes increasingly prevalent ...

  7. US-based travel companies plan layoffs ahead of 2025 - AOL

    www.aol.com/news/us-based-travel-companies-plan...

    U.S.-based travel companies, from Marriott International to Booking Holdings are trimming their budgets and workforce ahead of next year as falling leisure travel demand from lower-income ...

  8. Pacific Palisades wildfire rages as tens of thousands forced ...

    www.aol.com/evacuate-now-residents-ordered...

    Editor's Note: This page is a summary of news on the Pacific Palisades fire for Tuesday, Jan. 7. For the latest updates on the California wildfires, please read USA TODAY'S live updates for ...

  9. Super-resolution microscopy - Wikipedia

    en.wikipedia.org/wiki/Super-resolution_microscopy

    A single, tiny source of light can be located much better than the resolution of a microscope usually allows for: although the light will produce a blurry spot, computer algorithms can be used to accurately calculate the center of the blurry spot, taking into account the point spread function of the microscope, the noise properties of the ...

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