A Treatise of Practical Surveying: Which is Demonstrated from Its First Principles ... |
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Σελίδα 51
BAC = bac ; and ACB = ac b : in like manner EAD < e a d , and EDA = eda . If
therefore from the equal angles A , and a , we take the equal ones EAD + BAČ =
ead , + bac the remaining angle DAC = d ac , and if from the equal angles D and
d ...
BAC = bac ; and ACB = ac b : in like manner EAD < e a d , and EDA = eda . If
therefore from the equal angles A , and a , we take the equal ones EAD + BAČ =
ead , + bac the remaining angle DAC = d ac , and if from the equal angles D and
d ...
Σελίδα 150
2 ; and in the same line , under the title of distances in the third column , let the
measure of the line BC , in chains and links , be inserted : after the same manner
we may proceed from C to D , and thence to E ; but because the angle at E , viz .
2 ; and in the same line , under the title of distances in the third column , let the
measure of the line BC , in chains and links , be inserted : after the same manner
we may proceed from C to D , and thence to E ; but because the angle at E , viz .
Σελίδα 230
those limits , the work may be balanced in the following manner : on a .slate , or
separate piece of paper , find the lat . and dep . to each course and distance , as
in the following example , observing to add an half of the differences to the ...
those limits , the work may be balanced in the following manner : on a .slate , or
separate piece of paper , find the lat . and dep . to each course and distance , as
in the following example , observing to add an half of the differences to the ...
Σελίδα 242
As before half the sum of Bb , and Cc multiplied by bc , will be the area of the
trapezium bBCC ; after the same manner , half the sum of Cc , and Dd , multiplied
by cd , will give the area of the trapezium CDd ; and again , half the sum of Dd ,
and ...
As before half the sum of Bb , and Cc multiplied by bc , will be the area of the
trapezium bBCC ; after the same manner , half the sum of Cc , and Dd , multiplied
by cd , will give the area of the trapezium CDd ; and again , half the sum of Dd ,
and ...
Σελίδα 247
Pitch upon your centre as o , from whence thro ' a lay the fiducial edge of a thin
ruler , with a fine pointed pair of compasses , take the distance from a to the
centre o , and lay it by the ruler's edge from a to A : in the like manner take the
distance ...
Pitch upon your centre as o , from whence thro ' a lay the fiducial edge of a thin
ruler , with a fine pointed pair of compasses , take the distance from a to the
centre o , and lay it by the ruler's edge from a to A : in the like manner take the
distance ...
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Δεν εντοπίσαμε κριτικές στις συνήθεις τοποθεσίες.
Συχνά εμφανιζόμενοι όροι και φράσεις
acres angle Answer base bearing called centre chains chord circle Co-sec Co-sine Co-tang column contained decimal difference direct distance divided division draw drawn east edge equal EXAMPLE feet field field-book figures four four-pole fourth give given greater ground half height Hence inches laid land Lat Dep length less logarithm manner measure method multiplied needle object observe opposite parallel perches perpendicular plain plane Plate pole prob PROBLEM proportion quantity quotient radius reduce remainder right angles right line root scale Secant sect side sights sine square station suppose survey taken Tang tangent theo THEOREM third triangle triangle ABC true turn variation whence whole
Δημοφιλή αποσπάσματα
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 207 - ... that triangles on the same base and between the same parallels are equal...
Σελίδα 40 - 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 43 - Triangles upon equal bases, and between the same parallels, are equal to one another.
Σελίδα 103 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Σελίδα 31 - Figures which consist of more than four sides are called polygons ; if the sides are all equal to each other, they are called regular polygons. They sometimes are named from the number of. their sides, as a five-sided figure is called a pentagon, one of six sides a hexagon, &"c.
Σελίδα 31 - ... they are called regular polygons. They sometimes are named from the number of their sides, as a five-sided figure is called a pentagon, one of. six sides a hexagon, &c. but if their sides are not equal to each other, then they are called irregular polygons, as an irregular pentagon, hexagon, &c.
Σελίδα 45 - The hypothenuse of a right-angled triangle may be found by having the other two sides ; thus, the square root of the sum of the squares of the base and perpendicular, will be the hypothenuse. Cor. 2. Having the hypothenuse and one side given to find the other; the square root of the difference of the squares of the hypothenuse and given side will be the required side.
Σελίδα 265 - As the length of the whole line, Is to 57.3 Degrees,* So is the said distance, To the difference of Variation required. EXAMPLE. Suppose it be required to run a line which some years ago bore N. 45°.
Σελίδα 32 - Things that are equal to one and the same thing are equal to one another." " If equals be added to equals, the wholes are equal." " If equals be taken from equals, the remainders are equal.
Πληροφορίες βιβλιογραφίας
| Τίτλος | A Treatise of Practical Surveying: Which is Demonstrated from Its First Principles ... |
| Συγγραφέας | Robert Gibson |
| Έκδοση | 3 |
| Εκδότης | Lewis Nichols, 1806 |
| Πρωτότυπο από | το Πανεπιστήμιο του Μίτσιγκαν |
| Ψηφιοποιήθηκε στις | 26 Μάιος 2007 |
| Μέγεθος | 452 σελίδες |
| Εξαγωγή αναφοράς | BiBTeX EndNote RefMan |