A Treatise of Practical Surveying: Which is Demonstrated from Its First Principles ... |
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Σελίδα 62
8. the lines DE and FG , must each pass through the centre , therefore , their point
of intersection H , must be the centre . SCHOLIUM . By this method the centre of a
circle may be found , by having only a segment of it given . PROBLEM XVI .
8. the lines DE and FG , must each pass through the centre , therefore , their point
of intersection H , must be the centre . SCHOLIUM . By this method the centre of a
circle may be found , by having only a segment of it given . PROBLEM XVI .
Σελίδα 169
There is another centre hole about 1 of the ta . ble's breadth from one edge , and
is in the middle between the two ends . To this centre hole on the other side of the
frame , there are the divisions of a semi - circle , or 180 degrees ; and these ...
There is another centre hole about 1 of the ta . ble's breadth from one edge , and
is in the middle between the two ends . To this centre hole on the other side of the
frame , there are the divisions of a semi - circle , or 180 degrees ; and these ...
Σελίδα 247
these last points fall within your paper , the map may be increased on it to a scale
as large again as its own ' ; and if the like distances be again set outwards in right
lines from the centre , and if these last points fall within your paper , it will ...
these last points fall within your paper , the map may be increased on it to a scale
as large again as its own ' ; and if the like distances be again set outwards in right
lines from the centre , and if these last points fall within your paper , it will ...
Σελίδα 248
From what has been said it is plain , that if a map is to be enlarged to one whose
scale is double the given one , that the distances from the respective stations to
the centre , being set over by the ruler's edge , will give the points for the
enlarged ...
From what has been said it is plain , that if a map is to be enlarged to one whose
scale is double the given one , that the distances from the respective stations to
the centre , being set over by the ruler's edge , will give the points for the
enlarged ...
Σελίδα 249
to the centre , being set three times beyond sạid stations , will lay out the points
for your enlarged map , for these points will be four times further from the centre
than are the stations of the map . When a map is enlarged to another , whose
scale ...
to the centre , being set three times beyond sạid stations , will lay out the points
for your enlarged map , for these points will be four times further from the centre
than are the stations of the map . When a map is enlarged to another , whose
scale ...
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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 |