enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Traveling microscope - Wikipedia

    en.wikipedia.org/wiki/Traveling_microscope

    A travelling microscope is an instrument for measuring length with a resolution typically in the order of 0.01mm. The precision is such that better-quality instruments have measuring scales made from Invar to avoid misreadings due to thermal effects. The instrument comprises a microscope mounted

  3. Optics - Wikipedia

    en.wikipedia.org/wiki/Optics

    The most famous compound optical instruments in science are the microscope and the telescope which were both invented by the Dutch in the late 16th century. [110] Microscopes were first developed with just two lenses: an objective lens and an eyepiece. The objective lens is essentially a magnifying glass and was designed with a very small focal ...

  4. Microscopy - Wikipedia

    en.wikipedia.org/wiki/Microscopy

    Antonie van Leeuwenhoek (1632–1723). The field of microscopy (optical microscopy) dates back to at least the 17th-century.Earlier microscopes, single lens magnifying glasses with limited magnification, date at least as far back as the wide spread use of lenses in eyeglasses in the 13th century [2] but more advanced compound microscopes first appeared in Europe around 1620 [3] [4] The ...

  5. Branches of physics - Wikipedia

    en.wikipedia.org/wiki/Branches_of_physics

    atmospheric physics is the application of physics to the study of the atmosphere; space physics is the study of plasmas as they occur naturally in the Earth's upper atmosphere (aeronomy) and within the Solar System; biophysics, studying the physical interactions of biological processes; chemical physics, the science of physical relations in ...

  6. Electron microscope - Wikipedia

    en.wikipedia.org/wiki/Electron_microscope

    Reproduction of an early electron microscope constructed by Ernst Ruska in the 1930s. Many developments laid the groundwork of the electron optics used in microscopes. [2] One significant step was the work of Hertz in 1883 [3] who made a cathode-ray tube with electrostatic and magnetic deflection, demonstrating manipulation of the direction of an electron beam.

  7. 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.

  8. Arab countries reject Trump proposal to move Palestinians ...

    www.aol.com/arab-countries-reject-trump-proposal...

    Arab countries released a statement opposing President Donald Trump's idea of relocating 1.5 Palestinian refugees from demolished Gaza to Egypt and Jordan.

  9. Time of flight - Wikipedia

    en.wikipedia.org/wiki/Time_of_flight

    Time of flight (ToF) is the measurement of the time taken by an object, particle or wave (be it acoustic, electromagnetic, etc.) to travel a distance through a medium. This information can then be used to measure velocity or path length, or as a way to learn about the particle or medium's properties (such as composition or flow rate).