The Engineer's and Mechanic's Encyclopædia, Τόμος 1T. Kelly, 1836 |
Άλλες εκδόσεις - Προβολή όλων
The Engineer's and Mechanic's Encyclopædia: Comprehending Practical ... Luke Hebert Πλήρης προβολή - 1848 |
The Engineer's and Mechanic's Encyclopædia: Comprehending ..., Τόμος 1 Luke Hebert Πλήρης προβολή - 1836 |
Συχνά εμφανιζόμενοι όροι και φράσεις
acid alkali ammonia angle antimony aperture apparatus applied attached axis barrel body boiler boiling bottom brass called carbonic acid carriage cast iron centre charcoal chlorine cistern coal cock colour condensed consists construction containing copper cupel cylinder diameter distillation effect employed engine engraving equal feet fire fixed flue fluid force frame fuel furnace glass groove heat hole horizontal inches instrument invention iron length lever liquid liquor lower machine matter means melted mercury metal motion mould mould boxes mucilage muriatic acid nitric acid obtained operation passing patent piece pipe piston placed plate portion potash pressure produced proportion pulley purpose quantity represents rollers round screw shaft side sliding specific gravity spermaceti steam substance sufficient sulphuric sulphuric acid surface temperature thickness tube turned upper usually valve vapour velocity vertical vessel weight wheel wood zinc
Δημοφιλή αποσπάσματα
Σελίδα 432 - The bell strikes one. We take no note of time, But from its loss. To give it then a tongue, Is wise in man. As if an angel spoke, I feel the solemn sound. If heard aright, It is the knell of my departed hours: Where are they?
Σελίδα 361 - When pieces of charcoal about an inch long and onesixth of an inch in diameter, were brought near each other (within the thirtieth or fortieth part of an inch) a bright spark was produced, and more than half the volume of the charcoal became ignited to whiteness, and by withdrawing the points from each other a constant discharge took place through the heated air, in a space equal at least to four inches, producing a most brilliant ascending arch of light, broad, and conical in form in the middle.
Σελίδα 21 - ... be particularly attended to, in considering their chemical nature, and the system of improvement. Thus a sandy soil may sometimes owe its fertility to the power of the subsoil to retain water ; and an absorbent clayey soil may occasionally be prevented from being barren, in a moist climate, by the influence of a substratum of sand or gravel.
Σελίδα 361 - When any substance was introduced into this arch, it instantly became ignited ; platina melted as readily in it as wax in the flame of a common candle ; quartz, the sapphire, magnesia, lime, all entered into fusion...
Σελίδα 742 - Let a saturated solution of indigo and madder in boiling water be made in such proportion as to give a purple tint; add to it from one-sixth to one-eighth of its weight of sulphuric acid, according to the thickness and strength of the paper to be used. This makes an ink which flows pretty freely from the pen ; and when writing, which has been executed with it, is exposed to a considerable but gradual heat from the fire, it becomes completely black, the letters being burnt in, and charred by the action...
Σελίδα 338 - Multiply the weight of the several particles by the squares of their distances from the centre of motion, and divide the sum of the products by the weight of the whole mass ; the square root of the quotient will be the distance of the centre of gyration from the centre of motion.
Σελίδα 490 - ... a sieve. The feathers should be afterwards well washed in clean water, and dried upon nets, the meshes of which may be about the fineness of cabbage-nets. The feathers must be from time to time shaken upon the nets, and as they dry will fall through the meshes, and are to be collected for use.
Σελίδα 671 - ... and put it under a sitting fowl. At the expiration of a certain number of days, they break the shell in water warmed by the sun. The young fry are presently hatched, and are kept in pure fresh water till they are large enough to be thrown into a pond with the old fish.
Σελίδα 547 - The single force which produces the same effect upon a body as two or more forces acting together, is called their resultant. The separate forces which can be so combined are called the components. The finding of the resultant of two or more forces is called the composition of forces, and the finding of two or more components of a given force, the resolution of forces.
Σελίδα 665 - ... the set of glasses. This case opens in the middle of its height, and the upper part turns up by hinges fixed behind. The spindle, which is of hard iron, lies horizontally from end to end of the box within, exactly in the middle, and is made to turn on brass gudgeons at each end. It is round, an inch in diameter at the thickest end, and tapering to a quarter of an inch at the smallest.