Lectures on Natural and Experimental Philosophy: Considered in It's [sic] Present State of Improvement. Describing in a Familiar and Easy Manner, the Principal Phenomena of Nature; and Shewing, that They All Co-operate in Displaying the Goodness, Wisdom, and Power of God, Volumen 3R. Hindmarsh, 1794 |
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Página v
... screw Of the endless fcrew 289 294 296 299 301 A general remark Of the lever applied to investigate the ftrength of bodies 305 306 Of compound engines 313 To compute the powers of compound engines 315 Of Smeaton's pullies 317 Of a ...
... screw Of the endless fcrew 289 294 296 299 301 A general remark Of the lever applied to investigate the ftrength of bodies 305 306 Of compound engines 313 To compute the powers of compound engines 315 Of Smeaton's pullies 317 Of a ...
Página 299
... SCREW . The mechanic power that next prefents itself for our confideration , is the fcrew ; a machine of great efficacy in raising weights , or preffing bodies clofe together . The screw confifts of two parts ; the first is called the ...
... SCREW . The mechanic power that next prefents itself for our confideration , is the fcrew ; a machine of great efficacy in raising weights , or preffing bodies clofe together . The screw confifts of two parts ; the first is called the ...
Página 300
... screw is made , by cutting a piece of paper into the form of an in- clined plane , and then wrapping it round a cy- linder . The inclined plane , rifing round the cy- linder in a spiral manner , forms what is called the threads of the ...
... screw is made , by cutting a piece of paper into the form of an in- clined plane , and then wrapping it round a cy- linder . The inclined plane , rifing round the cy- linder in a spiral manner , forms what is called the threads of the ...
Página 301
... SCREW . Sometimes a fcrew is applied to a wheel , fo as ' to serve as a pinion ; it is then called an endless Screw , being one that turns on an axis , and may be turned perpetually . The teeth , or threads , of this fcrew fit exactly ...
... SCREW . Sometimes a fcrew is applied to a wheel , fo as ' to serve as a pinion ; it is then called an endless Screw , being one that turns on an axis , and may be turned perpetually . The teeth , or threads , of this fcrew fit exactly ...
Página 302
... screw , the wheel will have turned once round . The diameter of the groove in the circle C , is equal to the diameter of the groove round the wheel D ; but the velocity of the wheel C , is 48 times the velocity of the wheel D ...
... screw , the wheel will have turned once round . The diameter of the groove in the circle C , is equal to the diameter of the groove round the wheel D ; but the velocity of the wheel C , is 48 times the velocity of the wheel D ...
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Otras ediciones - Ver todo
Términos y frases comunes
abfolute afcend againſt alfo aqua fortis arifes atmoſphere avoirdupois axis ballance becauſe body cafe caufe cauſe center of gravity circle confequently confiderable confidered confifts defcend defcribed diameter direction diſtance ecliptic elafticity equal equator faid fame fcrew fecond feet fenfes feven fhall fhew fhould fide firft fituation fixed fluid fmall folid fome fpace fpecific gravity fphere fpring fquare friction ftars ftill ftrength ftroke fubftance fubject fuch fufficient fufpended fuftain fuppofe fupport furface fyftem heavens horizon inches inclined plane increaſe inftance interfection itſelf lefs lever lofes machine mafs meaſure moft motion muft muſt neceffary obferved ofcillation oppofite ounces paffing pendulum philofophers pifton plane pofition pole preffed preffure proportion pullies purpoſe quantity of matter raife raiſed reafon refiftance reft rife ſmall ſpace ſtars thefe theſe thofe thoſe tion tube uſed veffel velocity vibrations weft weight wheel whofe
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Página 511 - In them hath he set a tabernacle for the sun; which is as a bridegroom coming out of his chamber, and rejoiceth as a strong man to run a race. His going forth is from the end of the heaven, and his circuit unto the ends of it: and there is nothing hid from the heat thereof.
Página 511 - Their line is gone out through all the earth, And their words to the end of the world. In them hath he set a tabernacle for the sun...
Página 363 - One man draws out the wire, another straights it, a third cuts it, a fourth points it, a fifth grinds it at the top for receiving the head ; to make the head requires two or three distinct operations ; to put it on is a peculiar business, to whiten the pins is another ; it is even a trade by itself to put them into the paper; and the important business of making a pin is in this manner divided into about eighteen distinct operations...
Página 363 - But in the way in which this business is now carried on, not only the whole work is a peculiar trade, but it is divided into a number of branches, of which the greater part are likewise peculiar trades.
Página 364 - ... the invention of a great number of machines which facilitate and abridge labour, and enable one man to do the work of many.
Página 458 - But the exercise of swimming, said the prince, is very laborious: the strongest limbs are soon wearied. I am afraid the act of flying will be yet more violent; and wings will be of no great use, unless we can fly further than we can swim.
Página 459 - should you envy others so great an advantage? All skill ought to be exerted for universal good; every man has owed much to others and ought to repay the kindness that he has received.
Página 511 - Let them praise the name of the LORD: for he commanded, and they were created.
Página 460 - ... waved his pinions a while to gather air, then leaped from his stand, and in an instant dropped into the lake. His wings, which were of no use in the air, sustained him in the water, and the prince drew him to land, half dead with terror and vexation.
Página 12 - ... even so very hard as never to wear or break in pieces ; no ordinary power being able to divide what God himself made one, in the first creation. While the particles continue entire, they may compose bodies of one and the same nature and texture in all ages ; but should they wear away or break in pieces, the nature of things depending on them would be changed.