Definition of Double image micrometer. Meaning of Double image micrometer. Synonyms of Double image micrometer
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Definition of Double image micrometer
Double image micrometerMicrometer Mi*crom"e*ter, n. [Micro- + -meter: cf. F.
An instrument, used with a telescope or microscope, for
measuring minute distances, or the apparent diameters of
objects which subtend minute angles. The measurement given
directly is that of the image of the object formed at the
focus of the object glass.
Circular, or Ring, micrometer, a metallic ring fixed in
the focus of the object glass of a telescope, and used to
determine differences of right ascension and declination
between stars by observations of the times at which the
stars cross the inner or outer periphery of the ring.
Double image micrometer, a micrometer in which two images
of an object are formed in the field, usually by the two
halves of a bisected lens which are movable along their
line of section by a screw, and distances are determined
by the number of screw revolutions necessary to bring the
points to be measured into optical coincidence. When the
two images are formed by a bisected object glass, it is
called a divided-object-glass micrometer, and when the
instrument is large and equatorially mounted, it is known
as a heliometer.
Double refraction micrometer, a species of double image
micrometer, in which the two images are formed by the
double refraction of rock crystal.
Filar, or Bifilar, micrometer. See under Bifilar.
Micrometer caliper or gauge (Mech.), a caliper or gauge
with a micrometer screw, for measuring dimensions with
Micrometer head, the head of a micrometer screw.
Micrometer microscope, a compound microscope combined with
a filar micrometer, used chiefly for reading and
subdividing the divisions of large astronomical and
Micrometer screw, a screw with a graduated head used in
some forms of micrometers.
Position micrometer. See under Position.
Scale, or Linear, micrometer, a minute and very
delicately graduated scale of equal parts used in the
field of a telescope or microscope, for measuring
distances by direct comparison.
Meaning of Double image micrometer from wikipedia
- that measures
of a telescope. It is usually
used to measure
of the image
of the object
- A filar micrometer
is a specialized eyepiece
used in astronomical telescopes
measurements, in microscopes
- A heliometer
(from Gr**** ἥλιος hḗlios "sun" and measure) is an instrument originally designed
of the sun's diameter
- Magnetic resonance imaging
(MRI) is a medical imaging technique
used in radiology
to form pictures
of the anatomy
and the physiological processes
- Atomic force microscopy
(AFM) or scanning force microscopy
(SFM) is a very-high-resolution type of scanning probe microscopy
(SPM), with demonstrated
- A double
seam is a canning process
a tin can by mechanically interlocking
the can body and a can end (or lid). Originally, the can end was...
- The stereo, stereoscopic
or dissecting microscope
is an optical microscope variant designed
for low magnification observation
of a sample, typically
Proceedings. 1854 On Radiant
Heat--Third Report. 1845 On a Double Image Micrometer
. 1847 On Luminous
Rings, &c. 1849 On Irradiation. (In Royal
- The Spitzer Space Telescope
the Space Infrared Telescope Facility
(SIRTF), is an infrared space telescope launched
in 2003 and still
- Play media
In mathematics, physics, and art, a moiré pattern
(English: /mwɑːˈreɪ/; French: [mwaʁe]) or moiré fringes
are large-scale interference
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