The rate at which a slip or 'cream' made of elutriated clay and water will flow through a small orifice is dependent on the viscosity of the liquid and this in turn depends on the amount of colloidal material present, i.
Footnote 5: A plastic substance is one with the characteristics of 'a fluid of so great a viscosity that it does not lose its shape under the influence of gravitation.
On raising the temperature of firing or on prolonging the heating at the previous maximum temperature the viscosity of the fused portion is diminished and crystallization may then occur.
Its viscosity is greatly affected by the addition or presence of small quantities of acid or alkali or of acidic or basic salts.
The relative viscosity of creams can easily be determined by the following method (Fig.
The viscosity of milk is often markedly increased over that which it normally possesses.
Mardikian and Schlossberg believed it to be a lava sheet dating from early in Mercury's history, when more volatile substances still existed in the surface rocks to cut down their viscosity when molten.
It's only three or four feet high, so viscosity is very low or density very high.
There's high viscosity stuff building a spatter cone to end all spatter cones, and some very thin fluid from somewhere at the bottom.
Clerk Maxwell's theory, that the viscosity of a gas is independent of its density, is correct.
The latest use to which the radiometer has been put was to test the viscosity of gases at decreasing pressures.
A viscous precipitate forms which frequently loses its viscosity when heat is applied.
If the test is giving a negative reaction, the bacilli may be collected in large clumps owing to the viscosity of the concentrated serum.
Further considerations on Viscosity; Numerical Test; formation of crevasses opposed to viscosity 19.
The quality of viscosity is practically absent in glacier-ice.
In the next section I shall endeavour to explain the origin of the crevasses, and shall afterwards make a few additional remarks on the alleged viscosity of ice.
Discussions as to its meaning; Facts and Principles; definition of theory; Some Experiments on the Mer de Glace to test the Viscosity of the Ice 17.
What then is the meaning of viscosity or viscidity?
For very rapid displacements the liquid on account of its viscosity behaves like a solid.
When water is made more viscid by the gradual addition of glycerine,[H] the surface-tension and the specific gravity are but little altered though the viscosity is steadily and sensibly increased.
By reason of some secret property, or that the tongue of a dog is full of pores, and so doth draw and take away the viscosity of the wound.
Because the spittle is without the viscosity of meat, which is wont to make the spittle of one who is full, gross and thick.
But leaving viscosity entirely aside, and dealing only with so-called perfect fluids, the difficulties are often overwhelming.
Some high-class mineral oils of high viscosity are inclined to emulsify with water, which emulsion appears as a jelly-like substance.
It might be added that high-grade oils having a high viscosity might not be the most suitable for turbine use.
This resistance is independent of any friction or viscosity in the fluid, and is due simply to its inertia resisting a sudden change of direction at the edge of the plate.
That is, neglecting the viscosity of the fluid, the velocity of filaments at the contracted section of the jet is simply the velocity due to the difference of level of the free surface in the reservoir and the orifice.
It is due to the viscosity of the fluid, but generally the laws of fluid friction are very different from those of simple viscous resistance.
When the relative motion of different parts of a fluid is small, the viscosity may be neglected without introducing important errors.
The total height h causing outflow consists of two parts--one part he expended effectively in producing the velocity of outflow, another hr in overcoming the resistances due to viscosity and friction.
The problems of hydraulics are therefore much more complicated than problems in which a regular motion of the fluid is assumed, hindered by the viscosity of the fluid.
On the other hand, where there is considerable relative motion, the viscosity may be expected to have an influence too great to be neglected.
No actual fluid is devoid of viscosity, and the effect of viscosity is to render the motion of a fluid sinuous, or rotational or eddying under most ordinary conditions.
The colour-box was perfected, and his experiments on the viscosity of gases were concluded during his residence in London.
The variation of viscosity in varying temperatures is less in mineral oils than in animal or vegetable oils.
It must possess a minimum variation of viscosity (84) in varying temperatures.
The friction varies as the temperature rises, and as the viscosity of the lubricant is thus decreased (80).
The use of a lubricant the viscosity of which is adapted to the pressure between the bearing surfaces (80).
In sugar refining it is frequently desirable to determine the viscosity of sirups, molasses, etc.
If the operation is repeated in molasses, we in the same way obtain the weight of adhering liquid, which, if divided by the weight of adhering water, gives the viscosity as compared with water.
Two atoms form a compound (skandha), when the one is viscous and the other dry or both are of different degrees of viscosity or dryness.
Just perfectly smooth, flat disks revolving in their own planes and pumping water because of the viscosity and adhesion of the fluid.
But the Tesla turbine engine, claims the inventor, will work just as well by gas as by steam, for as he points out gases have the properties of adhesion and viscosity just as much as water or steam.
The simple little experiment reveals the viscosity of water, or, in other words, reveals the property of the molecules which go to make up the water, of sticking to each other.
It is these properties of adhesion and viscosity that cause the 'skin friction' that impedes a ship in its progress through the water, or an aeroplane in going through the air.
It is a surprising fact that gases and vapours are possessed of this property of viscosity to a greater degree than are liquids such as water.
Defn: An instrument for measuring the degree of viscosity of liquids, as solutions of gum.
Hydrodynamic friction, friction produced by the viscosity of a liquid in motion.
In regard toviscosity the following observations are typical:-- (a) A viscose of 1.
Various probable uses are suggested by the viscosity of the evaporated extract.
There is a progressive loss of viscosity of the solution, and a corresponding deterioration in the structural properties of the cellulose when regenerated from it--especially marked in the film form.
Both types of air-brush equipment illustrated here require three cubic feet of air per minute to operate and the pressure necessary depends on the density, consistency or viscosity of the material used.
The spraying pressure necessarily depends on the density, consistency and viscosity of the material used.
The viscosity of the blood, as such, probably has very little effect on the resistance to the flow.
What relationship the viscosity of the blood has to the rate and volume of flow is not fully understood.
Some authors consider that the so-called viscosity of the blood also is a factor in the causation of increased tension.
It is thought by some that an increased viscosity assists in producing an increased amount of work for the heart.
In this way fresh analogies are revealed to us, which may often be followed into detail; ohmic resistance resembles the viscosity of liquids; hysteresis would resemble rather the friction of solids.
I did, but not, of course, of the color and viscosity of hers.
