Glasgow Mechanics' Magazine, and Annals of Philosophy, Volume 1W.R. M'Phun., 1824 - Industrial arts |
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Page 40
... wire , in the present Number . : It has been asserted , that wires , of pure gold , can be drawn of only the 4000th part of an inch in diameter . Dr. Wollaston has advanced much far- ther taking a cylinder of silver , about one - third ...
... wire , in the present Number . : It has been asserted , that wires , of pure gold , can be drawn of only the 4000th part of an inch in diameter . Dr. Wollaston has advanced much far- ther taking a cylinder of silver , about one - third ...
Page 42
... wires , whose elasticity is more per- fect , and the duration of the mo- tion will become incomparably greater ; which indicates , that it would become indefinite , if the ob- stacles were entirely removed . The stone which we throw ...
... wires , whose elasticity is more per- fect , and the duration of the mo- tion will become incomparably greater ; which indicates , that it would become indefinite , if the ob- stacles were entirely removed . The stone which we throw ...
Page 83
... wires are fixed , that press on the under part of the hooks ; behind it is placed a wire spring for recovering the position of the hook presser . S , a roller , half cut away in the centre , to allow the tumblers , or levers , to play ...
... wires are fixed , that press on the under part of the hooks ; behind it is placed a wire spring for recovering the position of the hook presser . S , a roller , half cut away in the centre , to allow the tumblers , or levers , to play ...
Page 84
... wire , placed below the web . This greatly in- creases the labour of the draw - boy , who has often , at a single pull , to raise 30 or 40 pounds through a space of 3 or 4 inches . To enable him to accomplish what would otherwise be ...
... wire , placed below the web . This greatly in- creases the labour of the draw - boy , who has often , at a single pull , to raise 30 or 40 pounds through a space of 3 or 4 inches . To enable him to accomplish what would otherwise be ...
Page 87
... of the one facilitates the elevation of the other . It will be recollected , that , in consequence of the lines of the harness being all loaded with lead wires , the draw - boy has sometimes to raise a weight of MECHANICS ' MAGAZINE . 87.
... of the one facilitates the elevation of the other . It will be recollected , that , in consequence of the lines of the harness being all loaded with lead wires , the draw - boy has sometimes to raise a weight of MECHANICS ' MAGAZINE . 87.
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acid angle apparatus appear applied Archimedes barometer body calculated cause centre Charles Macintosh cloth coal gas colour construction Correspondent cylinder diameter discovery distance earth effect electric employed engine equal experiments feet fixed force George Rodger give GLASGOW MECHANICS glass heat Hence hole hour improvement inches inserted Institution invention iron LAWS OF KEPLER Lectures length lever light Loch Ness machine Magazine magnetic manner matrass means MECHANICAL PHILOSOPHY ment mercury metal minute mode moon motion nature needle observed oil gas opinion Paisley pass patent petrifaction philosophers piece pipe plate pole present pressure principle produced proportion pulley quantity query render rollers round screw side solution south pole specific gravity steam steam engine substance surface tained tion Trongate tube turned valve velocity vessel weight wheel whole wire Your's
Popular passages
Page 118 - I seen also under the sun, and it seemed great unto me: there was a little city, and few men within it; and there came a great king against it, and besieged it, and built great bulwarks against it: now there was found in it a poor wise man, and he by his wisdom delivered the city; yet no man remembered that same poor man.
Page 438 - We have said that Mr Watt was the great improver of the steam-engine ; but, in truth, as to all that is admirable in its structure, or vast in its utility, he should rather be described as its inventor. It was by his inventions...
Page 290 - Nicole, do hereby declare that the nature of my said Invention, and the manner in which the same...
Page 438 - It can engrave a seal, and crush masses of obdurate metal before it; draw out, without breaking, a thread as fine as gossamer, and lift a ship of war like a bauble in the air. It can embroider muslin and forge anchors, cut steel into ribbons, and impel loaded vessels against the fury of the winds and waves.
Page 256 - ... books, and I learned geometry. By reading I found that there were good books in these two sciences in Latin : I bought a Dictionary, and I learned Latin. I understood also that there were good books of the same kind in French : I bought a dictionary, and I learned French. And this, my lord, is what I have done : it seems to me that we may learn every thing when we know the twenty-four letters of the alphabet.
Page 438 - It has armed the feeble hand of man, in short, with a power to which no limits can be assigned; completed the dominion of mind over the most refractory qualities of matter ; and laid a sure foundation for all those future miracles of mechanic power which are to aid and reward the labours of after generations.
Page 71 - On the 15th of August, 1643, as I stood at my window, I was surprised with a most wonderful delectable vision. The sea that washes the Sicilian shore swelled up and became, for ten miles in length, like a chain of dark mountains ; while the waters near our Calabrian coast grew quite smooth, and in an instant appeared as one clear polished mirror, reclining against the ridge.
Page 162 - For were it not better for a man in a fair room to set up one great light, or branching candlestick of lights, than to go about with a small watch candle into every corner?
Page 71 - In a moment they lost half their height, and bent into arcades, like Roman aqueducts. A long cornice was next formed on the top, and above it rose castles innumerable, all perfectly alike. These soon split into towers, which were shortly after lost in colonnades, then windows, and at last ended in pines, cypresses, and other trees, even and similar. This was the Fata Morgana, which, for twenty-six years, I had thought a mere fable.
Page 362 - This mixture is to be melted to a frit, and is then to be ground to a fine powder, 3 parts of calcined borax being added previously to the grinding.