Glasgow Mechanics' Magazine, and Annals of Philosophy, Volym 4W.R. M'Phun., 1826 |
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Sida 22
... fire only with those which are nearly equal in hardness to common flint ; and it has hence been chosen by Werner as a cri- terion for determining one of the most important external characters of minerals , namely , their hardness . Mr ...
... fire only with those which are nearly equal in hardness to common flint ; and it has hence been chosen by Werner as a cri- terion for determining one of the most important external characters of minerals , namely , their hardness . Mr ...
Sida 27
... fire upon the steam chamber . Thirdly , for creating a head of steam , by charging the steam cham- ber previous to starting , and without the use of the engine . " [ Inrolled , December , 1824. ] THAT copper and brass vessels cannot be ...
... fire upon the steam chamber . Thirdly , for creating a head of steam , by charging the steam cham- ber previous to starting , and without the use of the engine . " [ Inrolled , December , 1824. ] THAT copper and brass vessels cannot be ...
Sida 28
... fire , where it must be again fused , stirring it well round : it is then to be poured into small flat moulds , where it is suffered to cool , and it is then fit for use . This tinning is to be applied in the following manner : -First ...
... fire , where it must be again fused , stirring it well round : it is then to be poured into small flat moulds , where it is suffered to cool , and it is then fit for use . This tinning is to be applied in the following manner : -First ...
Sida 29
... fire is the best for this tinning ; for turf coals attack the metal , and interrupt the union and fusion of the coating . even . ON DR . DARWIN'S " PHYTOLOGIA ; OR , ESSAY ON THE PRINCIPLES OF VEGETATION . " THE Botanic Garden and Zoon ...
... fire is the best for this tinning ; for turf coals attack the metal , and interrupt the union and fusion of the coating . even . ON DR . DARWIN'S " PHYTOLOGIA ; OR , ESSAY ON THE PRINCIPLES OF VEGETATION . " THE Botanic Garden and Zoon ...
Sida 34
... fire - door , I make a re- gister to open and shut , to any ex- tent , at pleasure . The other end I connect with the brick - work di- rectly underneath the fire - bridge , which fire - bridge I make double , with a small interval ...
... fire - door , I make a re- gister to open and shut , to any ex- tent , at pleasure . The other end I connect with the brick - work di- rectly underneath the fire - bridge , which fire - bridge I make double , with a small interval ...
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Populära avsnitt
Sida 142 - But, first, whom shall we send In search of this new World ? whom shall we find Sufficient...
Sida 333 - AH ! who can tell how hard it is to climb The steep where Fame's proud temple shines afar...
Sida 33 - ... and leads us towards perfection. A middle-aged ploughman will scarce ever be brought to the carriage and language of a gentleman, though his body be as well proportioned, and his joints as supple, and his natural parts not any way inferior.
Sida 177 - With gold and gems if Chilian mountains glow ; If bleak and barren Scotia's hills arise ; There plague and poison, lust and rapine grow ; Here peaceful are the vales, and pure the skies, And freedom fires the soul, and sparkles in the eyes. : Then grieve not, thou, to whom th
Sida 154 - The weights I use are one globule of gold which weighs one grain, and two or three others which weigh onetenth of a grain each ; and also a number of small rings of fine brass wire, made in the manner first mentioned by Mr. Lewis, by appending a weight to the wire, and coiling it with the tension of that weight round a thicker brass wire in a close spiral, after which the extremity of the spiral being tied hard with waxed thread, I put the covered wire in a vice, and applying a sharp knife, which...
Sida 90 - Mechanist, in consequence of a communication made to him by a certain Foreigner, residing abroad...
Sida 335 - One part, one little part, we dimly scan Through the dark medium of life's feverish dream ; Yet dare arraign the whole stupendous plan, If but that little part incongruous seem.
Sida 155 - You will perceive that by means of these weights placed on different parts of the beam, I can learn the weight of any little mass from one grain, or a little more, to the -j-'j,-, of a grain.
Sida 155 - If on the contrary it weigh one grain and a fraction, it will be counterpoised by the heavy gold weight at the extremity, and one or more of the lighter ones placed in some other part of the beam. This beam...
Sida 154 - The fulcrum is a bit of plate brass, the middle of which lies flat on my table when I use the balance, and the two ends are bent up to a right angle so as to stand upright. These two ends .are ground at the same time on a flat hone, that the extreme surfaces of them may be in the same plane ; and their distance is such that the needle when laid across them rests on them at a small distance from the sides of the beam.