He entered the dining room where Jackson stood polishing silver and Elisabeth made up floral arrangements.
Any roughness was levelled by polishing with ivory or a smooth shell.
Hyemale, commonly known as the Dutch rush, is much more abundant in Holland than in Britain; it is used for polishing purposes.
With a portion of this sum he obtained release from the last six months of his apprenticeship, and with the rest he purchased a glass-polishing machine.
Amongst the earliest mechanical contrivances of Fraunhofer was a machine for polishing mathematically uniform spherical surfaces.
The industries comprise the manufacture of chemicals and artificial manures, granite polishing, flour and sawmills, bootand shoe-making, carriagebuilding and woollen manufactures.
In the town are' a number of marble-polishing works.
Thus workers in lead suffer from the effects of this substance as a poison, those who work in phosphorus are liable to necrosis of bone and fatty degeneration of the blood vessels and organs, and the many occupations in which dust is inhaled (coalmining, stone-dressing, steel-polishing, &c.; fig.
Among the most dangerous of the last class (the pneumokonioses) is perhaps that in which the dust particles take the form of finely divided freestone, as in stone-dressing and the dry-polishing on the grindstone of steel.
Polishing is effected by wooden wheels fed with wet pumice-powder and rottenstone and by brushes fed with moistened putty-powder.
This operation, like all the subsequent steps in the polishing of the glass, is carried out by powerful machinery.
This smooth surface is then brilliantly polished by the aid of friction with a rubbing tool covered with a soft substance like leather or felt and fed with a polishing material, such as rouge.
A few strokes of such a rubber are sufficient to produce a decidedly " polished " appearance, but prolonged rubbing under considerable pressure and the use of a polishing paste of a proper consistency are required in order to remove the last trace of pitting from the surface.
The deceptive effect is in some cases heightened by cutting over and polishing by hand the pressed surface.
By repeated hammering and polishing the expert obtains such control of the wood-grain pattern that its sinuosities and eddies seem to have developed symmetry without losing anything of their fantastic grace.
Numerous operations of luting, sizing, lacquering, polishing, drying, rubbing down, and so on, are performed by the nurimono-shi, until, after many days treatment, the object emerges with a smooth, lustrelike dark-grey or colored surface, and is ready to pass into the hands of the makie-shi, or decorator.
In fact the uniformity of brass and bell-metal is only superficial; if we adopt the methods described in the article Metallography, and if, after polishing a plane face on a bit of gun-metal, we etch away the surface layer and examine the new surface with a lens or a microscope, we find a complex pattern of at least two materials.
There is nothing in the nine books which may not have been written as early as 430 B.C.; there is no touch which, even probably, points to a later date than 424 B.C. As the author was evidently engaged in polishing his work to the last, and even promises touches which he does not give, we may assume that he did not much outlive the date last mentioned, or in other words, that he died at about the age of sixty.
The first constructor of reflecting telescopes on a large scale, William Herschel, never published anything about his methods of casting and polishing specula, and he does not appear to have been very successful beyond specula of 18 in.
In Brewster's Edinburgh Journal of Science for 1828 he described his machine for polishing the speculum, which in all essential points remained unaltered afterwards.
It imitates the motions made in polishing a speculum by hand by giving both a rectilinear and a lateral motion to the polisher, while the speculum revolves slowly; by shifting two eccentric pins the course of the polisher can be varied at will from a straight line to an ellipse of very small eccentricity, and a true parabolic figure can thus be obtained.
Both the grinding and polishing tools are grooved, to obtain a uniform distribution of the emery used in the grinding process and of the rouge employed in polishing, as also to provide for the lateral expansion of the pitch with which the polisher is coated.
He could very easily write in different styles at different times, now avoiding hiatus and now not, sometimes writing diffusely and sometimes briefly, partly polishing and partly leaving in the rough, according to the subject, his own state of health or humour, his age, and the degree to which he had developed a given topic; and all this even in the same manuscript as well as in different manuscripts, so that a difference of style between different parts of a work or between different works, explicable by one being earlier than another, does not prove either to be not genuine.
The chief industries are marble-polishing and the manufacture of leather, glass and tobacco.
Most of the manufacturing industries, indeed, are maintained for supplying the local market, there being only three important exceptions - the manufacture of sugar, the cleaning of coffee and the cleaning and polishing of rice.
Next to sugar, fertilizers were the most important manufactured product, their value being $1,150,625; the products of the establishments for the polishing and cleaning of rice were valued at $664,300.
Engineers and other craftsmen make extensive use of abrasion, effected by the aid of such abrasives as emery and carborundum, in shaping, finishing and polishing their work.
Experiments on alloys are, in some ways, easier to make than on pairs of non-metallic substances, partly owing to the possibility of polishing sections for microscopic examination, and the investigation of alloys has done much to elucidate the general phenomena of solution, of which metallic solution constitutes a special case.
In addition to the granite quarrying a.nd polishing, the leading industries are shipand boat-building, agricultural implement works and woollen manufactures.
Jeweller's rouge for polishing plate is a fine red iron oxide prepared by calcination from ferrous sulphate (green vitriol).
In the autumn of 1737 he was in London arranging for its publication and polishing it in preparation for the judgments of the learned.
It contains mirror-polishing works, subsidiary to the mirror-works of St Gobain, chemical works, sugar manufactories, metal foundries and breweries.
There are, in the town or its neighbourhood, great engineering, gun-making, and rolling and polishing works and breweries.
The consummate hardness of the diamond, in spite of its high price, has made it most useful for purposes of grinding, polishing and drilling.
The Dutsides of the vases were entirely wrought by handwork, with the polishing lines crossing diagonally.
In 1905 the cleaning and polishing of rice was the most important industry, its output being valued at $1,203,123, being nearly twice the value of the product of the rice mills of the city in 1900, 25.9% of the total value of the state's product of polished and cleaned rice, 46.1% of the value ($2,609,829) of all of Beaumont's factory products, and about.
Temporary cement for lathe-work, such as the polishing and grinding of jewelry and optical glasses, is compounded thus: - rosin, 4 oz.; whitening previously made redhot, 4 oz.; wax, 4 oz.
The projecting rods of bronze were then cut away, and the whole finished by rubbing down and polishing over any roughness or defective places.
Knowing the theory of his instrument, and possessed of much practical skill, coupled with unwearied patience, he conquered the difficulties of grinding and polishing the lenses, and soon succeeded in producing telescopes of greatly increased power.
After much experiment he selected an alloy of tin and copper as the most suitable material for his specula, and he devised means for grinding and polishing them.
Bradley and Molyneux, having been instructed by Hadley in his methods of polishing specula, succeeded in producing some telescopes of considerable power, one of which had a focal length of 8 ft.; and, Molyneux having communicated these methods to Scarlet and Hearn, two London opticians, the manufacture of telescopes as a matter of business was commenced by them (Smith's Opticks, bk.
Indeed, in its practical form the principle of the instrument has remained unchanged from the time of the Dollonds to the present day; and the history of its development may be summed up as consisting not in new optical discoveries but in utilizing new appliances for figuring and polishing, improved material for specula and lenses, more refined means of testing, and more perfect and convenient methods of mounting.
3 For the methods of grinding, polishing and testing lenses, see: Objective.
Shaping, polishing and figuring of specula are accomplished by methods and tools very similar to those employed in the construction of lenses.
The reflecting surface is first ground to a spherical form, the parabolic figure being given in the final process by regulating the size of the pitch squares and the stroke of the polishing machine.
In any case, it is desirable to diminish the loss of heat as much as possible by polishing the exterior of the calorimeter to diminish radiation, and by suspending it by non-conducting supports, inside a polished case, to protect it from draughts.
The industries of the natives are confined to such crafts as spinning and weaving and dyeing, the manufacture of iron weapons and implements, boatand shipbuilding, &c. More particularly in the southeastern division, and especially in the districts of Negara, Banjermasin, Amuntai and Martapura, shipbuilding, ironforging, goldand silversmith's work, and the polishing of diamonds, are industries of high development in the larger centres of population.
Quartz is a valuable grinding and polishing material, and is used for making sandpaper and scouring-soap. It is also largely used in the manufacture of glass and porcelain, "silver sand" being a pure quartz sand.
But then having thought on a tender way of polishing, proper for metall, whereby, as I imagined, the figure also would be corrected to the last; I began to try, what might be effected in this kind, and by degrees so far perfected an Instrument (in the essential parts of it like that I sent to London), by which I could discern Jupiters 4 Concomitants, and shewed them divers times to two others of my acquaintance.
Ferric oxide is employed as a pigment, as jeweller's rouge, and for polishing metals.
It has two Roman Catholic and two Evangelical churches, and works for the making and polishing of glass.
He is like Matthias Jochumsson in the copious flow of his rhetoric; some of his poems are perfect both as regards form and contents, but he sometimes neglects the latter while polishing the former.
A diatomaceous earth in central Nebraska, occurring especially in the region of Loup, is a good polishing powder, and is used for packing steam pipes.
Antony van Leeuwenhoek appears to be the first to succeed in grinding and polishing lenses of such short focus and perfect figure as to render the simple microscope a better instrument for most purposes than any compound microscope then constructed.
The prosperity of the town depends chiefly on agriculture and the manufacture of iron and steel wares, and of chemicals, but weaving and the making of pottery are also carried on, and there are baryta mills and polishing-mills for sandstone.
The silverware needed polishing and the furniture could use a good dusting.
Gabe leaned across her to grab the bag with his weapons' polishing supplies. A necklace with two emeralds – identical to the one he'd given her to wear – dangled above her.
The Ekaterinburg stone-polishing works in the Urals and those of Kolyvan in the Altai are well known.
Such tin-ash, as it is called, is used for the polishing of optical glasses.