Vanes Sentence Examples

Centrifugal pumps, constructed with several stages or sets of vanes, and suitable for high lifts, have been introduced for mine service.

When the rays of the sun or a candle, or dark radiation from a warm body, are incident on the vanes, the dark side of each vane is repelled more than the bright side, and thus the vanes are set into rotation with accelerated speed, which becomes uniform when the forces produced by the radiation are balanced by the friction of the pivot and of the residual air in the globe.

The nearly vertical vanes is balanced by the convection currents.

The best-known of Joule's experiments was that in which a brass paddle consisting of eight arms rotated in a cylindrical vessel of water containing four fixed vanes, which allowed the passage of the arms of the paddle but prevented the water from rotating as a whole.

The typical mine fan consists of a shaft upon which are mounted a number of vanes enclosed in a casing; the air entering a central side inlet is caught up by the revolving vanes and thrown out at the periphery by the centrifugal force thus generated.

If the light exerted direct impulsion on the vanes, their motion would gradually drag the case round after them, by reason of the friction of the residual air in the bulb and of the pivot.

On the other hand, if the effects arose from balanced stresses set up inside the globe by the radiation, the effects on the vanes and on the case would be of the nature of action and reaction, so that the establishment of motion of the vanes in one direction would involve impulsion of the case in the opposite direction; but when the motion became steady there would no longer be any torque either on the vanes or on the case, and the latter would therefore come back to its previous position of equilibrium; finally, when the light was turned off, the decay of the motion of the vanes would involve impulsion of the case in the direction of their motion until the moment of the restoring torque arising from the suspension of the case had absorbed the angular momentum in the system.

The important part played by the residual air in the globe had also been deduced by Osborne Reynolds from observing that on turning off the light, the vanes came to rest very much sooner than the friction of the pivot alone would account for; in fact, the rapid subsidence is an illustration of Maxwell's great theoretical discovery that viscosity in a gas (as also diffusion both of heat and of the gas itself) is sensibly independent of the density.

He lays stress on the dimensional relations of the problem, pointing out that the phenomena which occur with large vanes in highly rarefied gas could also occur with proportionally smaller vanes in gas at higher pressure.

Hull; some months earlier Lebedew had published in the Annalen der Physik a verification for metallic vanes so thin as to avoid the gasaction, by preventing the production of sensible difference of temperature between the two faces by the incident radiation.

That velocity would be gradually destroyed by the resistance of the air to the forward flight; it was, therefore, the office of the steamengine and the vanes it actuated simply to repair the loss of velocity; it was made, therefore, only of the power a,nd weight necessary for that small effect."

These vanes were four in number, but were found entirely ineffectual in moving the balloon, or in aiding its ascending power.

Above, on the roof of the hall is a beautifully carved wooden louver, with nine golden vanes supported by beasts.

The edge of the saucer shaped object was thick and had vanes spaced about every foot, like buckets on a turbine wheel.

For medium head schemes runners are mounted in a spiral casing with internal adjustable guide vanes.

The square air ducts ahead of each engine feature variable geometry vanes.

In front of the first rotor stage are the inlet guide vanes.

Diffraction spikes on a reflector's star images, caused by its secondary mirror spider vanes, are absent in an unobstructed refractor.

Blinds 4 Sale Manufacturers of made to measure Venetian, roller, vertical blinds and replacement vertical vanes.

Sheets of mica are used as a surface for painting, especially in India; for lantern slides; for carrying photographic films; as a protective covering for pictures and historical documents; for mounting soft and collapsible natural history specimens preserved in spirit; for the vanes of anemometers; mirrors of delicate physical instruments; for various optical and many other purposes.

He constructed an apparatus in illustration, which he called a radiometer or lightmill, by pivoting a vertical axle carrying equidistant vertical vanes inside an exhausted glass bulb, one side of each vane being blackened and the other side bright, the blackened sides all pointing the same way round the axle.

Behind the wings are two vertical fan wheels, furnished with oblique vanes, which are intended to propel the apparatus through the air.

Inlet guide vanes -- devices positioned by the inlet guide vane actuator pilot valve.

Diffraction spikes on a reflector 's star images, caused by its secondary mirror spider vanes, are absent in an unobstructed refractor.

Blinds 4 Sale Manufacturers of made to measure venetian, roller, vertical blinds and replacement vertical vanes.

Finials and weather vanes are also restored and re-gilded.

The air-ways k, k, in the fixed vanes establish communication between the cores of the vortices and the atmosphere.

The remiges and rectrices indicate perfect feathers, with shaft and complete vanes which were so neatly finished that they must have possessed typical radii and hooklets.