• Thumbnail for Dynameter
    A dynameter is an instrument that measures the magnification of a telescope. It is usually a double-image micrometer used to measure the diameter of the...
    899 bytes (67 words) - 03:49, 3 December 2021
  • Thumbnail for Magnification
    diameter of this may be measured using an instrument known as a Ramsden dynameter which consists of a Ramsden eyepiece with micrometer hairs in the back...
    15 KB (2,262 words) - 19:20, 25 April 2025
  • Love" July 15, 2019 (2019-07-15) Items appraised include a 1920s micro-dynameter, which is a quack medicine device; a collection of prototype Care Bear...
    431 KB (538 words) - 10:28, 4 June 2025
  • could detect cancer. He based his machine on Francis Cutler Ellis's Micro-Dynameter. However, medical experts dismissed his device as quackery. Whitby was...
    7 KB (751 words) - 14:50, 7 September 2024
  • Thumbnail for Telescope
    telescopes Bahtinov mask Binoculars Bioptic telescope Carey mask Dew shield Dynameter f-number First light Hartmann mask Keyhole problem Microscope Planetariums...
    42 KB (3,970 words) - 11:39, 24 June 2025
  • galaxy problem Dwarf planet Dyadics Dye-sensitized solar cell Dye laser Dynameter Dynamic aperture Dynamic aperture (accelerator physics) Dynamic equilibrium...
    17 KB (1,787 words) - 22:53, 7 October 2024