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 image of the object glass. The magnifying power is found by comparing the actual diameter of the glass with the measured diameter of the image of the glass.

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H. A. Morton Whitby

could detect cancer. He based his machine on Francis Cutler Ellis's Micro-Dynameter. However, medical experts dismissed his device as quackery. Whitby was

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

List of Pawn Stars episodes

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

Telescope

telescopes Bahtinov mask Binoculars Bioptic telescope Carey mask Dew shield Dynameter f-number First light Hartmann mask Keyhole problem Microscope Planetariums

Index of physics articles (D)

galaxy problem Dwarf planet Dyadics Dye-sensitized solar cell Dye laser Dynameter Dynamic aperture Dynamic aperture (accelerator physics) Dynamic equilibrium