# Orr's Circle of the Sciences: Mechanical philosophy

W.S. Orr and Company, 1856 - Science

### What people are saying -Write a review

We haven't found any reviews in the usual places.

### Contents

 xii 65 Couples acting in the same or 71 Centre of Gravity 79 Centre of Gravity in Animal Bodies 88 DYNAMICS 129 Examples of Accelerating Force 135 Examples of Moving Forces 151 Definitions 161 Explanation of Terms 149 166 Interpretation of Symbols 167 Resultant of all the Pressures 173 The Hydrostatic Balance 179 Stable and Unstable Equilibrium 185 Kotating Fluids 191 Varying Velocity of a Spouting 199 Law of decrease of Atmospheric 209 Application of the Formula 211 Introductory Remarks 225 Standard of Mechanical Power 231 Knowledge of Drawing essential 237
 Law of reflection 287 Rules for Computing the Strength 293 Dimensions of Resisting Shaft 299 Clipping or Shearing Strain 305 Rotatory Motion 312 The Striking Apparatus of a Clock 354 PRACTICAL MECHANICS 359 Introductory Remarks 360 Formula for Calculating Power 367 Extent of Fluesurface 373 Cleansing Marine Boilers 379 The Steamgauge 385 The Packingring 391 Application of Clutches 428 Driving Machinery 431 Rotary Motion 438 Shifting Straps by Fork 469 Velocity of Toothed Wheel 476 Worm and Wheel Gearing 482 HYDRODYNAMICS 506

### Popular passages

Page 486 - Square Measure 144 square inches = 1 square foot 9 square feet = 1 square yard 30£...
Page 217 - We know now that the underlying principle is the same as in a mercurial barometer : it is the pressure of the atmosphere on the surface of the water in the well that pushes the water up into the pump.
Page 416 - Multiply the square of the length of the crank in inches by 1-661, and then multiply the square of the diameter of the cylinder in inches by...
Page 39 - May one thousand eight hundred and twenty-five, the Straight Line or Distance between the Centres of the Two Points in the Gold Studs in the Straight Brass Rod, now in the Custody of the Clerk of the House of Commons, whereon the Words and Figures
Page 13 - Is not this Medium much rarer within the dense Bodies of the Sun, Stars, Planets and Comets, than in the empty celestial Spaces between them? And in passing from them to great distances, doth it not grow denser and denser perpetually, and thereby cause the gravity of those great Bodies towards one another, and of their parts towards the Bodies; every Body endeavouring to go from the denser parts of the Medium towards the rarer?
Page 487 - CUBIC MEASURE 1728 cubic inches = 1 cubic foot 27 cubic feet = 1 cubic yard...
Page 325 - The areas of circles are proportional to the squares of their •diameters:; and...
Page 16 - nay all the known bodies in the universe together, as " far as we know, may be compounded of no greater a " portion of solid matter than might be reduced into a <' Globe of one inch only in diameter, or even less.
Page 412 - To find the piston speed of an engine, multiply the stroke in inches by the number of revolutions per minute and divide the product by 6. EXAMPLE. — An engine with a 52-inch stroke runs at a speed of 66 revolutions per minute.
Page 174 - ... which is equal to the area of the surface, and altitude equal to the depth of the centre of gravity of the surface below the surface of the fluid.