Diaphragms Sentence Examples

The object-glass is provided with diaphragms pierced with round holes or slits.

Sensors - These two units house the balanced diaphragms used to detect the pressure differences between the tubes.

These diaphragms are sometimes fitted in a slide, so that it is possible to move the diaphragm sideways and give oblique illumination (see below).

Some of these medicines can damage condoms and diaphragms, making them ineffective.

Initially the bottom slab and webs including the diaphragms were cast, with the top slab cast in a second stage.

Diaphragms come in several different sizes because all women are shaped differently.

The diaphragms of these are mechanically connected to a small mirror and control its movement in accordance with the strength and direction of the received currents.

In some cases porous diaphragms have been employed; but such diaphragms introduce a new complication, for the liquid as a whole is pushed through them by the action of the current, the phenomenon being known as electric endosmose.

Hence experiments without separating diaphragms are to be preferred, and the apparatus may be considered effective when a consideraable bulk of intervening solution is left unaltered in composition.

Canvas diaphragms were used to prevent the acid formed by electrolysis at the anode from mixing with the cathode liquor, and so hindering deposition.

By an arrangement of diaphragms in the lower trough the vapours are circulated through the system.

Cavity of the zooecium subdivided by transverse diaphragms, most numerous in the distal portion.

Practically the difficulty of making these diaphragms for the different powers of the exact required equality is insuperable; but, if the observer is content to lose a certain amount of light, we see no reason why they may not readily be made slightly less.

This is a tall iron erection, built up from superposed cylinders, which are separated from one another by perforated horizontal diaphragms, con this recovery is carried out in the most efficient manner, the process cannot possibly pay; but so much progress has been made in this direction that the loss of ammonia is very slight indeed, merely a fraction per cent.

The anodes are made of retort-carbon or other chlorine-resisting material, and they are mounted in cells which serve as diaphragms. The material of these cells is usually cement, mixed with certain soluble salts which impart sufficient porosity to the material.

The intermediate layer of the salt solution, floating over the caustic soda solution, plays the part of a diaphragm, by preventing the chlorine evolved in the bell from acting on the sodium hydrate formed outside, and this solution offers much less resistance to the electric current than the ordinary diaphragms. This process therefore consumes less power than most others.

The circular drum is divided into four equal compartments by radial diaphragms. And in a pan at the other end of the beam (which is counter - balanced for the weight of the drum) is a I-lb weight to weigh the tea.

The leaves have a single main bundle, and in the mesophyll are four longitudinal series of large intercellular spaces separated by transverse diaphragms. The sporangia, which are situated singly on the adaxial surface of the leaves, between their insertion on the stem and the ligule, arise from a considerable number of epidermal cells.

These compounds are brought into solution by means of polysulphides of the alkali metals and the resultant liquor run into the cathode compartment of a bath, which is divided by diaphragms into a series of anode and cathode chambers; the anode divisions being closed and gas-tight, and containing carbon or platinum electrodes.

For lenses of short focus the diameter of the pupil is too large, and diaphragms must be employed which strongly diminish the aperture of the pencils, and so reduce the errors, but with a falling off of illumination.

When this occurs the greatest brightness will be obtained if the corresponding diaphragms of the two systems coincide; i.e.

It is brought about by placing special semicircular diaphragms in the plane of the exit pupil of the microscope.

The object can be held firmly on the stage plate B by cramps C. On the lower side of the stage plate are the condenser and the diaphragms, and the illuminating mirror J is held by a rod D fixed to the stage plate.

This concentration is most easily produced by sliding or revolving diaphragms. A series of holes of different sizes perforate a revolving disk below the stage plate at an equal radial distance from the axis of the disk, so that the holes can be brought under the preparation in turn, the centre of the diaphragms always being a continuation of the optical axis of the microscope.

The half cones of rays have now semicircular sections, the diaphragms having the same form.