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
... Multiplied by . Divided by . Equal to . ... Since , or seeing that . .. Hence , or therefore . : Indicates the quotient of one divided by the other of the quantities it connects , called sometimes the ratio of the quan- tities ...
... Multiplied by . Divided by . Equal to . ... Since , or seeing that . .. Hence , or therefore . : Indicates the quotient of one divided by the other of the quantities it connects , called sometimes the ratio of the quan- tities ...
Página 3
... multiplied by itself in order to produce any given number . The fixed number is called the base of the system . In the common system , this base is 10 . It follows from the above , that the logarithm of any power of 10 is equal to the ...
... multiplied by itself in order to produce any given number . The fixed number is called the base of the system . In the common system , this base is 10 . It follows from the above , that the logarithm of any power of 10 is equal to the ...
Página 4
... multiplied by the exponent of the power . The logarithm of any root of a number is equal to the loga- rithm of the number divided by the index of the root . 6. The preceding principles enable us to abridge labor in arithmetical ...
... multiplied by the exponent of the power . The logarithm of any root of a number is equal to the loga- rithm of the number divided by the index of the root . 6. The preceding principles enable us to abridge labor in arithmetical ...
Página 5
... multiply this by the decimal part , and add the product to the mantissa just found . The principle employed is that the differences of numbers are proportional to the differences of their logarithms , when these differences are small ...
... multiply this by the decimal part , and add the product to the mantissa just found . The principle employed is that the differences of numbers are proportional to the differences of their logarithms , when these differences are small ...
Página 7
... 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 operation of subtracting 10 is ...
... 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 operation of subtracting 10 is ...
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Términos y frases comunes
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