The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skillful Practice of this ArtE. Duyckinck, 1821 - 544 σελίδες |
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Σελίδα 106
... object of what is call- ed Plane Trigonometry , because the six parts , considered here , are in the same plane : it is also denominated Rectilineal Trigonometry . The se- cond question belongs to Spherical Trigonometry , wherein the ...
... object of what is call- ed Plane Trigonometry , because the six parts , considered here , are in the same plane : it is also denominated Rectilineal Trigonometry . The se- cond question belongs to Spherical Trigonometry , wherein the ...
Σελίδα 146
... object fixed in the extreme point of the line to be measured ; this is a direction for the hinder chain- man to govern the foremost , one by , in order that the distance may be measured in a right line ; for if the hinder chainman ...
... object fixed in the extreme point of the line to be measured ; this is a direction for the hinder chain- man to govern the foremost , one by , in order that the distance may be measured in a right line ; for if the hinder chainman ...
Σελίδα 147
... object at the termination of the line , as before : so that , the number of pegs taken up by the hinder chainman , expresses the number of chains ; to which , if the odd links be annexed , the dis- tance line required in chains and ...
... object at the termination of the line , as before : so that , the number of pegs taken up by the hinder chainman , expresses the number of chains ; to which , if the odd links be annexed , the dis- tance line required in chains and ...
Σελίδα 162
... object be set at B , draw yourself backward to any convenient dis- tance C , so that B may cover A : from B , lay off any other distance by the river's side to E , and complete the parallelogram EBCD : stand at D , and cause a mark to ...
... object be set at B , draw yourself backward to any convenient dis- tance C , so that B may cover A : from B , lay off any other distance by the river's side to E , and complete the parallelogram EBCD : stand at D , and cause a mark to ...
Σελίδα 164
... object in the next angle B , with the horse hair , or thread of the opposite sight ; the degrees then cut by the south end of the needle , will give the num- ber to be placed in the second column of your field - book in a line with ...
... object in the next angle B , with the horse hair , or thread of the opposite sight ; the degrees then cut by the south end of the needle , will give the num- ber to be placed in the second column of your field - book in a line with ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD acres altitude Answer arch base bearing centre chains and links circle circumferentor Co-sec Co-tang column compasses contained cube root decimal diagonal difference of latitude Dist divided divisions divisor draw east Ecliptic edge EXAMPLE feet field-book figure four-pole chains geometrical series given angle given number half the sum height Hence Horizon glass hypothenuse inches instrument length Logarithms measure meridian distance multiplied Natural Co-sines natural number natural sine Nonius number of degrees object observed off-sets opposite parallelogram perches perpendicular plane pole PROB proportional protractor Quadrant quotient radius rhombus right angles right line screw Secant sect semicircle side square root station subtract survey taken tance Tang tangent theo theodolite trapezium triangle ABC trigonometry two-pole chains vane versed sine vulgar fraction whence
Δημοφιλή αποσπάσματα
Σελίδα 246 - ... that triangles on the same base and between the same parallels are equal...
Σελίδα 58 - 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 231 - RULE. From half the sum of the three sides subtract each side severally.
Σελίδα 45 - 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 14 - Then multiply the second and third terms together, and divide the product by the first term: the quotient will be the fourth term, or answer.
Σελίδα 5 - His method is founded on these three considerations: 1st, that the sum of the logarithms of any two numbers is the logarithm of the product of...
Σελίδα 91 - ... scale. Given the length of the sine, tangent, or secant of any degrees, to find the length of the radius to that sine, tangent, or secant.
Σελίδα 35 - DIVISION BY LOGARITHMS. RULE. From the logarithm of the dividend subtract the logarithm of the divisor, and the number answering to the remainder will be the quotient required.
Σελίδα 30 - Then, because the sum of the logarithms of numbers, gives the logarithm of their product ; and the difference of the logarithms, gives the logarithm of the quotient of the numbers ; from the above two logarithms, and the logarithm of 10, which is 1, we may obtain a great many logarithms, as in the following examples : EXAMPLE 3.
Σελίδα 211 - At 170 feet distance from the bottom of a tower, the angle of its elevation was found to be 52° 30' : required the altitude of the tower ? Ans.