enow.com Web Search

Search results

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

    en.wikipedia.org/wiki/Scanning_electron_microscope

    An account of the early history of scanning electron microscopy has been presented by McMullan. [2] [3] Although Max Knoll produced a photo with a 50 mm object-field-width showing channeling contrast by the use of an electron beam scanner, [4] it was Manfred von Ardenne who in 1937 invented [5] a microscope with high resolution by scanning a very small raster with a demagnified and finely ...

  3. Environmental scanning electron microscope - Wikipedia

    en.wikipedia.org/wiki/Environmental_scanning...

    The signal thus picked up by the anode is further amplified and processed to modulate a display screen and form an image as in SEM. Notably, in this design and the associated gaseous electron amplification, the product p·d is an independent parameter, so that there is a wide range of values of pressure and electrode geometry which can be ...

  4. List of common display resolutions - Wikipedia

    en.wikipedia.org/wiki/List_of_common_display...

    This chart shows the most common display resolutions, with the color of each resolution type indicating the display ratio (e.g., red indicates a 4:3 ratio). This article lists computer monitor, television, digital film, and other graphics display resolutions that are in common use. Most of them use certain preferred numbers.

  5. Scanning confocal electron microscopy - Wikipedia

    en.wikipedia.org/wiki/Scanning_confocal_electron...

    Scanning confocal electron microscopy (SCEM) is an electron microscopy technique analogous to scanning confocal optical microscopy (SCOM). In this technique, the studied sample is illuminated by a focussed electron beam, as in other scanning microscopy techniques, such as scanning transmission electron microscopy or scanning electron microscopy.

  6. List of computer display standards - Wikipedia

    en.wikipedia.org/wiki/List_of_computer_display...

    Various computer display standards or display modes have been used in the history of the personal computer. They are often a combination of aspect ratio (specified as width-to-height ratio), display resolution (specified as the width and height in pixels), color depth (measured in bits per pixel), and refresh rate (expressed in hertz ...

  7. Manage AOL Calendar settings

    help.aol.com/articles/aol-calendar-settings-manage

    A calendar is only as good as the info it displays. Personalize the time zone, default view, and hours you're typically available on your calendar.

  8. AOL latest headlines, entertainment, sports, articles for business, health and world news.

  9. Contrast transfer function - Wikipedia

    en.wikipedia.org/wiki/Contrast_transfer_function

    Power spectrum (Fourier transform) of a typical electron micrograph. The effect of the contrast transfer function can be seen in the alternating light and dark rings (Thon rings), which show the relation between contrast and spatial frequency.