The Field Engineer: A Handy Book of Practice in the Survey, Location, and Track-work of Railroads; Containing a Large Collection of Rules and Tables, Original and Selected, Applicable to Both the Standard and the Narrow Gauge, and Prepared with Special Reference to the Wants of the Young EngineerD. Van Nostrand Company, 1890 - 339 páginas |
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Página ix
... quotient of one divided by the other of the quantities it connects , called sometimes the ratio of the quan- tities . :: Indicates an equality of ratios , and connects equal ratios in a proportion . Thus , a b c d indicates that a ÷ b ...
... quotient of one divided by the other of the quantities it connects , called sometimes the ratio of the quan- tities . :: Indicates an equality of ratios , and connects equal ratios in a proportion . Thus , a b c d indicates that a ÷ b ...
Página 4
... quotient is equal the logarithm of the dividend diminished by that of the divisor . The logarithm of any power of a number is equal to the loga- rithm of the number multiplied by the exponent of the power . The logarithm of any root of ...
... quotient is equal the logarithm of the dividend diminished by that of the divisor . The logarithm of any power of a number is equal to the loga- rithm of the number multiplied by the exponent of the power . The logarithm of any root of ...
Página 6
... quotient . Divide 0.7438 by 12.9476 . Example 2 . Operation . Log . 0.7438 . Log . 12.9476 . • 1.871456 1.112189 · - 2.759267 = log . 0.057447 , the quotient . Here 1 taken from gives 2 for a result . The subtraction , as in this case ...
... quotient . Divide 0.7438 by 12.9476 . Example 2 . Operation . Log . 0.7438 . Log . 12.9476 . • 1.871456 1.112189 · - 2.759267 = log . 0.057447 , the quotient . Here 1 taken from gives 2 for a result . The subtraction , as in this case ...
Página 7
... quotient required . Example . Multiply 358884 by 5672 , and divide the product by 89721 . Log . 358884 Log . 5672 ( a . c . ) Log . 89721 Operation . • • 5.554954 • • · 3.753736 • 5.047106 4.355796 = log . 22688 , the result . The ...
... quotient required . Example . Multiply 358884 by 5672 , and divide the product by 89721 . Log . 358884 Log . 5672 ( a . c . ) Log . 89721 Operation . • • 5.554954 • • · 3.753736 • 5.047106 4.355796 = log . 22688 , the result . The ...
Página 14
... quotient will be seconds , which must be added to the degrees and minutes set aside , in the case of a sine or tangent , and subtracted in the case of a cosine or cotangent . Example . Find the arc corresponding to log . sin . 9.422248 ...
... quotient will be seconds , which must be added to the degrees and minutes set aside , in the case of a sine or tangent , and subtracted in the case of a cosine or cotangent . Example . Find the arc corresponding to log . sin . 9.422248 ...
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A. D. MIN adjustment apex distance backsight called central angle CHORD column Cosine 1 Sine cross-hair Cube Roots decimal deflection distance degree of curvature degree of curve Diff divided engineer equal error Example feet figure fixed FOOD foregoing formation slope frog angle gauge of track gauge side ground Hence inches index angle instrument height intersection angle located logarithm Main frog dist mantissa mark measure method metres metric curve middle frog middle ordinate middle point minutes multiplied natural sine number corresponding observation opposite outer rail parallel perpendicular plane triangle Polaris quotient radii radius range REVERSED CURVE rule Sine 1 Cotang Square Roots sub-chord subtended Subtract Suppose switch-rail Table XVI tabular tance Tang tangential angle tangential distance telescope terminal tangent tion toe of switch transitman Trigonometry turnout curve vernier vertical ΙΟ