micrometer
千分尺,测微计,微米,测微器
Definitions
- 1
- : any of various devices for measuring minute distances, angles, etc., as in connection with a telescope or microscope.
- : Also called mike. micrometer caliper . a precision instrument with a spindle moved by a finely threaded screw, for the measurement of thicknesses and short lengths, commonly used by machinists for turning shafts or boring holes.
Examples
Last year, the Human Brain Project released a 3D digital map that integrates different aspects of human brain organization at the millimeter and micrometer level.
These nanoparticles help the underpinnings of the teeth vary in hardness and stiffness by at least a factor of two over distances of just several hundred micrometers — a few times the average width of a human hair.
That’s enough resolution to recognize biologically assembled clumps of molecules, but not sufficient to see fossils of actual microbial bodies, which might be as small as a single micrometer.
The new process also only achieved a CNT density of about 45 CNTs per micrometer, which is still significantly below the optimum of 200 predicted by previous research.
A one-half inch eye-piece, a micrometer eye-piece, and an attachable mechanical stage are very useful additions.
Focus the scale of each micrometer accurately, and make the lines on them parallel.
Place a stage micrometer divided into hundredths of a millimetre on the microscope stage and focus accurately.
Rotate the head of the micrometer screw until the movable line has transversed one division of the stage micrometer.
Note the optical combination employed in this experiment and record it with the calculated micrometer value.