The Mechanic's Calculator: Comprehending Principles, Rules, and Tables in the Various Departments of Mathematics and Machanics |
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Page 9
... simple trick of an idle boy , it is said , gave rise to the apparatus which superseded the constant attendance of a person while the engine was at work . This , however romantic , is not the fact the invention originated in necessity ...
... simple trick of an idle boy , it is said , gave rise to the apparatus which superseded the constant attendance of a person while the engine was at work . This , however romantic , is not the fact the invention originated in necessity ...
Page 11
... simple ; but , if carefully consi- dered , they will be found sufficient to establish the principle . The mere habit of calculation cannot be said to constitute a knowledge of arithmetic ; it is easily obtained , but is of no avail ...
... simple ; but , if carefully consi- dered , they will be found sufficient to establish the principle . The mere habit of calculation cannot be said to constitute a knowledge of arithmetic ; it is easily obtained , but is of no avail ...
Page 12
... simple as to be almost self - evident , there is often * In a very creditable work , recently published , " Stuart's History of the Steam Engine , " it is stated that mathematics is not necessary to make a great mechanic , and Watt is ...
... simple as to be almost self - evident , there is often * In a very creditable work , recently published , " Stuart's History of the Steam Engine , " it is stated that mathematics is not necessary to make a great mechanic , and Watt is ...
Page 13
... simple propositions with first principles , compared with propo- sitions which are more complex ; but we have no hesitation in saying , that if the steps of the propositions are carefully consi- dered , one by one , they will be easily ...
... simple propositions with first principles , compared with propo- sitions which are more complex ; but we have no hesitation in saying , that if the steps of the propositions are carefully consi- dered , one by one , they will be easily ...
Page 14
... simple . After the study of trigonometry , Simpson's conic sections may be read with advan- tage . necessary . Perhaps it may be a kind of relief at this stage , to see some- thing of the application of mathematics to mechanics , and ...
... simple . After the study of trigonometry , Simpson's conic sections may be read with advan- tage . necessary . Perhaps it may be a kind of relief at this stage , to see some- thing of the application of mathematics to mechanics , and ...
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The Mechanic's Calculator: Comprehending Principles, Rules, and Tables in ... William Grier No preview available - 2015 |
Common terms and phrases
absciss avoirdupois axis beam body boiler bottom breadth called cast iron centre of gravity chord circle circumference column cube root cubic foot cubic inches cylinder decimal denominator depth difference distance divided divisor draw effect elastic equal feet long feet per second figure fluid force fraction fulcrum gallons give given line greater half heat hence horses inclined plane length lever machine measure mechanic minute motion move multiplied number of teeth ordinate orifice ounces parabola parallel parallelogram pendulum perpendicular pinion pipe piston plane pounds pressure proportion pulley pump quantity of water quars quotient radius rectangle resistance right angles rule shaft side specific gravity square inch square root steam engine stroke surface temperature thickness tons transverse triangle tube valve velocity vulgar fractions water wheel weight wheel wherefore yard
Popular passages
Page 20 - Multiply the numerators together for a new numerator, and the denominators together for a new denominator.
Page 121 - Powers, are certain simple instruments, commonly employed for raising greater weights, or overcoming greater resistances, than could be effected by the natural strength without them. These are usually accounted six in number, viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw.
Page 23 - The denominator of a decimal, though never expressed, is always the unit, 1, with as many ciphers annexed as there are figures in the decimal.
Page 21 - Rule. — Multiply the whole number by the denominator of the fraction, add the numerator to the product and place the denominator under the result.
Page 53 - OF TIME. 60 Seconds = 1 Minute 60 Minutes = 1 Hour 24 Hours = 1 Day 7 Days = 1 Week 28 Days = 1 Lunar Month...
Page 275 - ... way of employing the strength of horses. Robertson Buchanan states, that the mechanical effects of men in working a pump, in turning a winch, in ringing a bell, and rowing a boat, are as the numbers 100, 167, 227, and 248. According to Hatchette, of a man working at the cord of a pulley to raise the ram of a pile engine = 50 dynamical units.
Page 133 - The power is to the weight which is to be raised, as the distance between two threads of the screw, is to the circumference of a circle described by the power applied at the end of the lever.
Page 61 - In a right-angled triangle, the side opposite the right angle is called the Hypotenuse ; and the other two sides are called the Legs, and sometimes the Base and Perpendicular.
Page 109 - BRICKWORK is estimated at the rate of a brick and a half thick. So that if a wall be more or less than this standard thickness, it must be reduced to it, as follows : Multiply the superficial content of the wall by the number of half bricks in the thickness, and divide the product by 3. The...
Page 61 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.