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 EngineerVan Nostrand, 1882 - 6 páginas |
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Página 12
... NATURAL SINES , ETC. 1. Natural sines , cosines , tangents , or cotangents are those which are referred to a radius of 1. They may be used for all the purposes of trigonometrical computation ; but it is found more convenient , in many ...
... NATURAL SINES , ETC. 1. Natural sines , cosines , tangents , or cotangents are those which are referred to a radius of 1. They may be used for all the purposes of trigonometrical computation ; but it is found more convenient , in many ...
Página 122
... natural numbers gives a logarithm representing , not the sum or difference , but the product or quotient , of such numbers . When , therefore , as in the two foregoing cases , the sum or difference of two or more trigonometric functions ...
... natural numbers gives a logarithm representing , not the sum or difference , but the product or quotient , of such numbers . When , therefore , as in the two foregoing cases , the sum or difference of two or more trigonometric functions ...
Página 131
... natural natural cosine of the Divide a by b : the 12. To find the Main Frog Angle , the Radius of the Outer Rail being known . Call the natural cosine of the switch - rail angle.a . Subtract the throw of switch - rail from the gauge of ...
... natural natural cosine of the Divide a by b : the 12. To find the Main Frog Angle , the Radius of the Outer Rail being known . Call the natural cosine of the switch - rail angle.a . Subtract the throw of switch - rail from the gauge of ...
Contenido
Definitions and principles | 3 |
Definitions | 11 |
ADJUSTMENT AND USE OF INSTRUMENTS | 21 |
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The Field Engineer: A Handy Book of Practice in the Survey, Location, and ... William Findlay Shunk Sin vista previa disponible - 2015 |
The Field Engineer, a Handy Book of Practice in the Survey, Location, and ... William Findlay Shunk Sin vista previa disponible - 2016 |
Términos y frases comunes
100 feet long 100-feet chords called central angle chord 100 feet column cross-hair Cube Roots decimals deflection angle deflection distance degree of curvature degree of curve Diff divided elevation engineer equal Example feet 8 inches figure find the radius fixed foregoing frog angle Full Gauge gauge of track gauge side grade ground Hypsometry index angle instrument intersection angle length of switch-rail located logarithm magnetic bear Main frog dist main track mantissa mark measure method middle frog middle ordinate middle point minutes Multiply outer rail parallel perpendicular quotient radii radius REVERSED CURVE screws Sine 1 Cotang Square Roots stake standard gauge sub-chord subtended Subtract Suppose Table XVI tabular tance Tang tangent A B tangential angle tangential distance telescope terminal tangent tion toe of switch Trigonometry turnout curve vernier versin ΙΟ ΤΑΝ