Mensuration, Mechanical Powers, and Machinery: The Principles of Mensuration Analytically Explained, and Practically Applied to the Measurement of Lines, Superficies, and Solids; Also, a Philosophical Explanation of the Simple Mechanical Powers, and Their Application to Machinery ...

Εξώφυλλο
R. B. Collins, 1850 - 128 σελίδες
 

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Σελίδα 29 - 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, etc.
Σελίδα 15 - ... 3. A pile of wood 8 feet long, 4 feet wide, and 4 feet high, contains 1 cord; and a cord foot is 1 foot in length of such a pile.
Σελίδα 13 - Pendulum vibrating Seconds of Mean Time in the Latitude of London in a Vacuum at the Level of the Sea is in the proportion of Thirty-Six Inches to Thirty-Nine Inches and one thousand three hundred and ninety-three ten-thousandth Parts of an Inch...
Σελίδα 13 - TABLE. 144 square inches (sq. in.) make 1 square foot, marked sq. ft. 9 square feet • 1 square yard,
Σελίδα 51 - The sum of two numbers, and the difference of their squares given, to find those numbers. RULE. Divide the difference of their squares by the sum of the numbers, and the quotient will be their difference.
Σελίδα 11 - Thus it is a law of the nature of water that under the mean pressure of the atmosphere at the level of the sea, it boils at 212° Fahrenheit.
Σελίδα 68 - Divide the area by . 7854 and extract the square root of the quotient.
Σελίδα 47 - To measure a parallelogram, or long square. RULE. Multiply the length by the breadth, and the product will be the area, or superficial content.
Σελίδα 23 - The lines are called the sides. The perimeter of a polygon is the sum of all its sides. The...
Σελίδα 67 - A circle may be considered as a regular polygon of an infinite number of sides, the circumference being equal to the perimeter, and the radius to the perpendicular.

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