A System of Practical Mathematics: ... With a Plain Account of the Gregorian Or New Style ... By John Potterauthor, 1753 - 395 σελίδες |
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Σελίδα 242
... divided and numbered in the fame Manner , to one hundred and eighty Degrees , both Ways . To the Table is ufually fitted a Compafs , to fet it North or South , and and a Ruler or Index with Sights . The Table 242 MATHEMATICS . Of Surveying.
... divided and numbered in the fame Manner , to one hundred and eighty Degrees , both Ways . To the Table is ufually fitted a Compafs , to fet it North or South , and and a Ruler or Index with Sights . The Table 242 MATHEMATICS . Of Surveying.
Σελίδα 243
... North and South Points of the Com- pafs , then screw the Inftrument faft , and direct the Sights to the firft Angle , A , to the right Hand of the North and South Line ; obferve the Degrees and Minutes contained be- tween 360 of the ...
... North and South Points of the Com- pafs , then screw the Inftrument faft , and direct the Sights to the firft Angle , A , to the right Hand of the North and South Line ; obferve the Degrees and Minutes contained be- tween 360 of the ...
Σελίδα 244
... North and South Line , any Point of which , as O , affume for the Station ; lay the Center of the Pro- tractor on this Point , turn it ' till the Diameter of the Pro- E F N A S B tractor falls upon the North U and South Line , and prick ...
... North and South Line , any Point of which , as O , affume for the Station ; lay the Center of the Pro- tractor on this Point , turn it ' till the Diameter of the Pro- E F N A S B tractor falls upon the North U and South Line , and prick ...
Σελίδα 246
... North and South by the Needle , direct your Sights to I , the firft M Angle to the right . Hand of the Inftru- ment , and obferve the Degrees and Minutes cut by the Index , which is 20 ° . 49′ ́ : In the fame Manner , Ꮐ K view all the ...
... North and South by the Needle , direct your Sights to I , the firft M Angle to the right . Hand of the Inftru- ment , and obferve the Degrees and Minutes cut by the Index , which is 20 ° . 49′ ́ : In the fame Manner , Ꮐ K view all the ...
Σελίδα 248
... North and South , and fcrew it fast ; then choose a B fecondStation , as at 2 , and there set up a vifible Mark ; turn the In- 72 D N CE e- 13 k dex of your f Inftrument a- bout , till thro ' the Sights you Ag mn a H G fee the Mark at O ...
... North and South , and fcrew it fast ; then choose a B fecondStation , as at 2 , and there set up a vifible Mark ; turn the In- 72 D N CE e- 13 k dex of your f Inftrument a- bout , till thro ' the Sights you Ag mn a H G fee the Mark at O ...
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Άλλες εκδόσεις - Προβολή όλων
A System of Practical Mathematics: ... with a Plain Account of the Gregorian ... JOHN. POTTER Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
Συχνά εμφανιζόμενοι όροι και φράσεις
9 Inches Afcenfion Angle Anſwer Arch Article Bafe A B Baſe Cafe Center Circumference Co-fine Co-tangent Compaffes confifts Conftruction Cube Root Cyphers Decimal Fractions Diameter Diſtance divided by 12 Dividend Divifion Divifor draw Ecliptic equal Exam Example Extreme disjunct fame Manner fecond Feet fet one Foot feven fhall Figure laft placed fimple Fraction find the Area firft firſt folid Content fquare Fruftum ftands fubtract fupplemental Multiplicand given Number Half Height Hypothenufe improper Fraction Inches Integers interfect Latitude lefs Line of Chords Logarithm meaſured by Prob Meridian mixed Number multiplied muſt obferve oblique Circle oblique-angled oppofite Perpendicular BC Pleaſure Pole Pound Pound Sterling Prime Vertical primitive Circle Product Pyramid Quotient Radius reduced Refolvend Remainder right Circle right-angled Triangle Rule Side A B Sine Square Root Subtrahend Sun's Tangent thefe theſe third thofe thro Triangle ABC ufually Vulgar Fractions Weft whofe whole Numbers
Δημοφιλή αποσπάσματα
Σελίδα 6 - Multiply all the numerators together for a new numerator, and all the denominators for a new denominator: then reduce the new fraction to its lowest terms.
Σελίδα 30 - Reduce compound fractions to simple ones, and mixt numbers to improper fractions ; then multiply the numerators together for a new numerator, and the denominators for. a new denominator.
Σελίδα 224 - As the base or sum of the segments Is to the sum of the other two sides, So is the difference of those sides To the difference of the segments of the base.
Σελίδα 147 - FRUSTUM, in mathematics ; a part of some solid body separated from the rest. The frustum of a cone is the part that remains, when the top is cut oft by a plane parallel to the base, and is otherwise called a truncated cone.
Σελίδα 361 - ... years, amounts to a whole day. By which the Vernal Equinox was anticipated ten days, from the time of the general council of Nice, held in...
Σελίδα 230 - When you have proved that the three angles of every triangle are equal to two right angles...
Σελίδα 361 - October, in 1582, to make the equinox fall on the twenty-first of March, as it did at the time of that council ; and to prevent the like variation for the future, he ordered that three days should be abated in every four hundred years by reducing the leap year at the close of each century for three successive centuries to common years, and retaining the leap year at the close of each fourth century only. This was at that time esteemed...
Σελίδα 147 - Multiply the diameters of the two bases together, and to the product add one third of the square of the difference of the diameters : then multiplying this sum by 7854...
Σελίδα 134 - Dimensions of any of the parts nf a Circle being given, to find the side of a square equal to the Circle. RULE. If the area of the circle be given, extract the square root of the area, which will be the side of a square equal to the circle : If the diameter or circumference be given, find the area by Art.
Σελίδα 132 - To find the area of a Circle. ' RULE. Multiply half the diameter by half the circumference, and the product is the area...