The Mechanics' Handbook: A Convenient Reference Book for All Persons Interested in Mechanical Engineering, Steam Engineering, Electrical Engineering, Railroad Engineering, Hydraulic Engineering, Bridge Engineering, EtcInternational Textbook Company, 1904 - 218 σελίδες |
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Σελίδα 41
... quantities like 10 " and Y. Hence , multiplying ( 1 ) by ( 2 ) , member by member , 10 * X 10 " 10 * + v = = XY , = or , by the definition of a logarithm , x + y log XY . But XY is the product of X and Y , and x + y is the sum of their ...
... quantities like 10 " and Y. Hence , multiplying ( 1 ) by ( 2 ) , member by member , 10 * X 10 " 10 * + v = = XY , = or , by the definition of a logarithm , x + y log XY . But XY is the product of X and Y , and x + y is the sum of their ...
Σελίδα 49
... quantities affected with decimal exponents are generally of an empirical nature ; that is , the constants or exponents or both are given such values as will make the results obtained by the formulas agree with those obtained by ...
... quantities affected with decimal exponents are generally of an empirical nature ; that is , the constants or exponents or both are given such values as will make the results obtained by the formulas agree with those obtained by ...
Σελίδα 93
... quantities , it indicates that the two quantities are to be added . Thus , in the expression 25 +17 , the sign ( + ) shows that 17 is to be added to 25 . The sign ( - ) indicates subtraction , and is called minus ; when placed between ...
... quantities , it indicates that the two quantities are to be added . Thus , in the expression 25 +17 , the sign ( + ) shows that 17 is to be added to 25 . The sign ( - ) indicates subtraction , and is called minus ; when placed between ...
Σελίδα 94
... quantities , it indi- cates that the quantity on the left is to be multiplied by that on the right . Thus , in the expression 25 × 17 , the sign ( X ) shows that 25 is to be multiplied by 17 . The sign ( ÷ ) indicates division , and is ...
... quantities , it indi- cates that the quantity on the left is to be multiplied by that on the right . Thus , in the expression 25 × 17 , the sign ( X ) shows that 25 is to be multiplied by 17 . The sign ( ÷ ) indicates division , and is ...
Σελίδα 95
... quantities which are to be treated as one quantity and subjected to the same operations . While any one of the four signs may be used as shown above , custom has restricted their use somewhat . The vincu lum is rarely used except in ...
... quantities which are to be treated as one quantity and subjected to the same operations . While any one of the four signs may be used as shown above , custom has restricted their use somewhat . The vincu lum is rarely used except in ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
amperes armature battery beam boiler bolts center of gravity center of percussion change gear chord deflection circle circuit column headed corresponding cubic cylinder decimal point Diam diameter difference divided draw dynamo electromotive force engine enrolled equal feet formula fraction frog distance gauge gear h given number heat Hence horsepower inertia iron lead screw Leclanché cells length mantissa mean effective pressure measured moment of inertia motor multiplied number of teeth number of threads obtained ohms P. P. TABLE perpendicular pipe piston pitch pounds pressure produce pulley quantities quotient radius radius of gyration rail resistance root rope shaft shown in Fig side significant figures square inch steam subtracted surface switch TABLE Continued tangent deflection temperature three figures tion triangle turnout curve valve velocity vertical volts weight wire wrought iron Zinc
Δημοφιλή αποσπάσματα
Σελίδα 2 - Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30| square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq. mi.) Cubic Measure 1728 cubic inches (cu.
Σελίδα 3 - TROY WEIGHT. 24 grains (gr.) 1 pennyweight (pwt.) 20 pennyweights, 1 ounce (oz.) 12 ounces ... 1 pound (Ib.) Troy weight is used in weighing gold, silver, precious stones, etc. APOTHECARIES
Σελίδα 3 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints = 1 quart (qt.) 4 quarts = 1 gallon (gal...
Σελίδα 2 - SURVEYORS' SQUARE MEASURE. 144. This measure is used by surveyors in computing the area or contents of land. TABLE. 625 Square Links (sq. 1. ) make 1 Pole P. 16 Poles " 1 Square Chain . sq. ch. 10 Square Chains " 1 Acre A. 640 Acres " 1 Square Mile . . sq. mi. 36 Square Miles (6 miles square)
Σελίδα 2 - CUBIC MEASURE 1728 cubic inches (cu. in.) = 1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu.
Σελίδα 6 - Measures of Capacity 10 milliliters (ml) =1 centiliter cl 10 centiliters =1 deciliter dl 10 deciliters =1 liter 1 10 liters =1 dekaliter Dl 10 dekaliters =1 hektoliter HI 10 hektoliters =1 kiloliter Kl NOTE — The liter is equal to the volume occupied by 1 cubic decimeter.
Σελίδα 25 - This is called the total heat of vaporization, or simply total heat. It is plain that the total heat is the sum of the heat of the liquid and the latent heat. That is, total heat = heat of liquid + latent heat.
Σελίδα 42 - To Divide One Number by Another, Subtract the logarithm of the divisor from the logarithm of the dividend, and obtain the antilogarithm of the difference.
Σελίδα 5 - Measures of Length. 10 millimeters (mm.) 1 centimeter (cm.) 10 centimeters 1 decimeter (dm.) 10 decimeters 1 meter (m.) 10 meters 1 dekameter (Dm.) 10 dekameters 1 hectometer (Hm.) 10 hectometers 1 kilometer (Km.) 10 kilometers 1 myriameter (Mm.) 1181.
Σελίδα 189 - Fig. /», the valve is shown In its extreme position at the right. The distance marked m is the maximum port opening. It matters not whether the outer edge of the valve travels beyond the inner edge of the port or falls short of it, as in the...