 | Neil Arnott - 1827 - 692 Seiten
...real advantages then of these machines are such as the following : That a man's effort, or any single power which is always at command, by working proportionally...expensive, or even impossible, to bring together. A small ship's company weighs the anchor by means of the capstan. A solitary workman, with his screw... | |
 | Neil Arnott - 1829 - 542 Seiten
...requisite magnitude of effect. The real advantages of these machines are such as the following: That one man's effort, or any small power, which is always...expensive, or even impossible, to bring together. A ship's company of a few individuals easily weighs a heavy anchor by means of the capstan. A solitary... | |
 | John Timbs - 1831 - 302 Seiten
...base, adds a good deal to the breadth. — Arnott. Why do very fat people usually throw back their head and shoulders ? . Because, by so doing, they keep...perpetual motions, and new mechanical engines of power ? heavy fly-wheel, &c. can ever exert more force than has passed into it from some source of motion.... | |
 | John Timbs - 1832 - 314 Seiten
...toes, without taking much from the length of the base, adds a good deal to the breadth. — Arnoit. Why do very fat people usually throw back their heaa...perpetual motions, and new mechanical engines of power ? Because the projectors do not understand the great truth, that no form or combination of machinery... | |
 | John Timbs - 1832 - 362 Seiten
...Because, by so doing, they keep the centre of gravity of the body over the base. SIMPLE MACHINES. Wliy have the " simple machines," as the lever, wheel and...perpetual motions, and new mechanical engines of power ? Because the projectors do not understand the great truth, that no form or combination of machinery... | |
 | John Timbs - 1832 - 332 Seiten
...Because, by so doing, they keep the centre of gravity of the body over the base. SIMPLE MACHINES. ffhy have the " simple machines," as the lever, wheel and...perpetual motions, and new mechanical engines of power ? Because the projectors do not understand the great truth, that no form or combination of machinery... | |
 | John Timbs - 1832 - 300 Seiten
...lever, wheel and axle, plane, wedge, screw, and pulley, been long called the " mechanic powers ? " Because they allow a small force to take its time...expensive, or even impossible to bring together. Why, then, are these machines advantageous ? Why are there so many vain schemes for perpetual motions, and... | |
 | Neil Arnott - 1838 - 596 Seiten
...or other such resistance. The real advantages of these machines are such as the following : O ^ That one man's effort, or any small power, which is always...expensive, or even impossible, to bring together. A ship's company of a few individuals easily weighs a heavy anchor by means of the capstan. A solitary... | |
 | Leonard Dunnell Gale - 1838 - 280 Seiten
...REMARKS. XCVIII, THE real advantages of all the mechanical powers may be summed up as follows : — One, man's effort or any small power, which is always at command, by working proportionally longer can perform the work of many men acting at once, whom it might be expensive, inconvenient, or impossible,... | |
 | Leonard Dunnell Gale - 1838 - 308 Seiten
...REMARKS. XCVIII. THE real advantages of all the. mechanical powers may be summed up as follows : — One man's effort or any small power, which is always at command, by working proportionably longer can perform the work of many men acting at once, whom it might be expensive,... | |
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Hence the common error in supposing that they generate force, or have a sort of innate power for saving labour ; whereas, neither simple machines nor mechanic powers save labour, in a strict sense of the phrase. Why, then, are these machines advantageous... 
