The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtE. Duyckinck, 1811 - 508 σελίδες |
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Σελίδα
... Natural Sines 71 heights 179 Points of the Compass 6. Changing the scale of Maps -Of Distances 194 3. Mensuration of Areas 200 General Method 232 Pennsylvania Method 246 4. Of Off - sets 5. Method of surveying by Intersections 257 Mean ...
... Natural Sines 71 heights 179 Points of the Compass 6. Changing the scale of Maps -Of Distances 194 3. Mensuration of Areas 200 General Method 232 Pennsylvania Method 246 4. Of Off - sets 5. Method of surveying by Intersections 257 Mean ...
Σελίδα
... Natural Sines heights 179 Of Distances 194 3. Mensuration of Areas 200 General Method 232 Pennsylvania Method 246 4. Of off - sets 5. Method of surveying by Intersections 257 6. Changing the scale of Maps Mean Refraction Sun's Parallax ...
... Natural Sines heights 179 Of Distances 194 3. Mensuration of Areas 200 General Method 232 Pennsylvania Method 246 4. Of off - sets 5. Method of surveying by Intersections 257 6. Changing the scale of Maps Mean Refraction Sun's Parallax ...
Σελίδα 29
... natural number , and of finding the natural number corres- ponding to any given Logarithm , therein : likewise for OF LOGARITHMS . 29.
... natural number , and of finding the natural number corres- ponding to any given Logarithm , therein : likewise for OF LOGARITHMS . 29.
Σελίδα 34
... find any proposed power of a given number by Logarithms . Rule . Multiply the Logarithm of the given num- ber by the Index of the proposed power , and the product will be the Logarithm , whose natural num- ber 34 OF LOGARITHMS .
... find any proposed power of a given number by Logarithms . Rule . Multiply the Logarithm of the given num- ber by the Index of the proposed power , and the product will be the Logarithm , whose natural num- ber 34 OF LOGARITHMS .
Σελίδα 35
... natural num- ber is the power required . When a negative Index is thus multiplied , its product is negative , but what was carried from the decimal part of the Logarithm must be affirmative ; consequently the difference is the Index of ...
... natural num- ber is the power required . When a negative Index is thus multiplied , its product is negative , but what was carried from the decimal part of the Logarithm must be affirmative ; consequently the difference is the Index of ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
acres altitude Answer arch azimuth base bearing blank line centre chains and links chord circle circumferentor Co-sec Co-tang column compasses contained decimal difference distance line divided divisions draw east Ecliptic edge feet field-book figures fore four-pole chains geom given number half the sum Horizon glass hypothenuse inches instrument Lat Dep Lat latitude length logarithm measure meridian distance multiplied natural co-sine natural sine needle Nonius number of degrees object observed off-sets opposite parallel parallelogram pegs perches perpendicular plane pole pole star Portmarnock PROB protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect Sextant side sights square station stationary distance subtract Sun's survey taken Tang tangent theo theodolite trapezium triangle ABC trigonometry two-pole chains vane versed sine vulgar fraction whence
Δημοφιλή αποσπάσματα
Σελίδα 38 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Σελίδα 25 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.
Σελίδα 197 - RULE. From half the sum of the three sides subtract each side severally.
Σελίδα 106 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Σελίδα 27 - The VERSED SINE of an arc is that part of the diameter which is between the sine and the arc. Thus BA is the versed sine of the arc AG.