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
... mean ab + b . a A2 . A small secondary figure annexed thus to an expression is called its exponent . It requires the principal to which it is attached to be used as many times in continued multiplication as there are units in the ...
... mean ab + b . a A2 . A small secondary figure annexed thus to an expression is called its exponent . It requires the principal to which it is attached to be used as many times in continued multiplication as there are units in the ...
Página 5
... MEANS OF LOGARITHMS . 7. Find the logarithms of the factors , and take their sum ; then find the number corresponding to the resulting logarithm , Example . Find the continued product of 3.902 , 597.16 and it will be the product ...
... MEANS OF LOGARITHMS . 7. Find the logarithms of the factors , and take their sum ; then find the number corresponding to the resulting logarithm , Example . Find the continued product of 3.902 , 597.16 and it will be the product ...
Página 6
... MEANS OF LOGARITHMS . 8. Find the logarithms of the dividend and the divisor , and subtract the latter from the former ; then find the number corresponding to the resulting logarithm , and it will be the quotient required . Divide 24163 ...
... MEANS OF LOGARITHMS . 8. Find the logarithms of the dividend and the divisor , and subtract the latter from the former ; then find the number corresponding to the resulting logarithm , and it will be the quotient required . Divide 24163 ...
Página 7
... means of the arith- metical complement , find the logarithm of the dividend and the arithmetical complement of the logarithm of the divisor ; add them together , and diminish the sum by 10 ; the number corresponding to the resulting ...
... means of the arith- metical complement , find the logarithm of the dividend and the arithmetical complement of the logarithm of the divisor ; add them together , and diminish the sum by 10 ; the number corresponding to the resulting ...
Página 16
... means of logarithms , taking the logarithm of the first term from the sum of the logarithms of the second and third terms , to obtain the logarithm of the fourth term ; or adding the arithmetical complement of the logarithm of the first ...
... means of logarithms , taking the logarithm of the first term from the sum of the logarithms of the second and third terms , to obtain the logarithm of the fourth term ; or adding the arithmetical complement of the logarithm of the first ...
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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