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 3
... follows from the above , that the logarithm of any power of 10 is equal to the exponent of that power . If ... follow the decimal point . The characteristic alone , in this case , is negative , the man- 3 tissa being always positive ...
... follows from the above , that the logarithm of any power of 10 is equal to the exponent of that power . If ... follow the decimal point . The characteristic alone , in this case , is negative , the man- 3 tissa being always positive ...
Página 5
... follow the decimal point will be one less than the number of units in the charac- teristic . Thus the number corresponding to the logarithm 5.233568 is 171225.296 ; that corresponding to the logarithm 2.233568 is .0171225 ...
... follow the decimal point will be one less than the number of units in the charac- teristic . Thus the number corresponding to the logarithm 5.233568 is 171225.296 ; that corresponding to the logarithm 2.233568 is .0171225 ...
Página 13
... follow the corresponding horizontal line till you come to the column designated at the top by sine , cosine , tang . , or cotang . , as the case may be ; the number there found is the logarithm sought . Thus , log . sin . 19 ° 55 ...
... follow the corresponding horizontal line till you come to the column designated at the top by sine , cosine , tang . , or cotang . , as the case may be ; the number there found is the logarithm sought . Thus , log . sin . 19 ° 55 ...
Página 18
... follows : To find a side . Call any one of the sides radius , and write become sines , tangents , cosines , or the like upon it the word " radius . " Observe whether the other sides 18 RIGHT - ANGled plane TRIANGLES .
... follows : To find a side . Call any one of the sides radius , and write become sines , tangents , cosines , or the like upon it the word " radius . " Observe whether the other sides 18 RIGHT - ANGled plane TRIANGLES .
Página 19
... follows : sin.2 + cos.2 = 1 ; tang . : - 1 sin . COS . = ; cotang . = = COS . sin . tang . 1 1 sec . = ; cosec . = cos . sin . versine 1 cos .; co - versine = 1— sin . ADJUSTMENT AND USE OF INSTRUMENTS . IX.-XV. ADJUSTMENT AND USE RIGHT ...
... follows : sin.2 + cos.2 = 1 ; tang . : - 1 sin . COS . = ; cotang . = = COS . sin . tang . 1 1 sec . = ; cosec . = cos . sin . versine 1 cos .; co - versine = 1— sin . ADJUSTMENT AND USE OF INSTRUMENTS . IX.-XV. ADJUSTMENT AND USE RIGHT ...
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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