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 250
... Meridian - Line , as n s , parallel to the former Meridian - Line NS , by Prob . 6 ; lay the Center of the Protractor on 3 , and , as the Degrees cut on the In- ftrument were 191 ° . 50 ' , mark off 11.50 ' , the Excess above 180 ...
... Meridian - Line , as n s , parallel to the former Meridian - Line NS , by Prob . 6 ; lay the Center of the Protractor on 3 , and , as the Degrees cut on the In- ftrument were 191 ° . 50 ' , mark off 11.50 ' , the Excess above 180 ...
Σελίδα 294
... would be quite dark if there was no Twilight : The fenfible Horizon is the Circle that bounds our Sight . 5. The Meridian is the Circle in which the Sun 5. The 294 MATHEMATICS . Of Aftronomy Of the great Circles of the Sphere ibid.
... would be quite dark if there was no Twilight : The fenfible Horizon is the Circle that bounds our Sight . 5. The Meridian is the Circle in which the Sun 5. The 294 MATHEMATICS . Of Aftronomy Of the great Circles of the Sphere ibid.
Σελίδα 295
... Meridian is the Circle in which the Sun is at Noon . This Circle cuts the Horizon in the North and South Points , and paffes thro ' the Zenith and Nadir of the Place and the two Poles of the World : When the Sun is upon it , and above ...
... Meridian is the Circle in which the Sun is at Noon . This Circle cuts the Horizon in the North and South Points , and paffes thro ' the Zenith and Nadir of the Place and the two Poles of the World : When the Sun is upon it , and above ...
Σελίδα 296
... Meridian of the Place is the Hour - Line of twelve of the Clock . 10. The Meridian - Circle that interfects the Ecliptic in the firft Point of Y and is called the Equinoctial Colure ; and that which cuts the Ecliptic in the Solftitial ...
... Meridian of the Place is the Hour - Line of twelve of the Clock . 10. The Meridian - Circle that interfects the Ecliptic in the firft Point of Y and is called the Equinoctial Colure ; and that which cuts the Ecliptic in the Solftitial ...
Σελίδα 297
... Meridian of any Place with the Sun. The right Afcenfion is reckoned on from the first Point of V to 360 ° . 21. An ... Meridian , either Eaft or Weft : ' Till he has paffed the Meridian , his Azimuth is Eaft ; and , when he has paffed it ...
... Meridian of any Place with the Sun. The right Afcenfion is reckoned on from the first Point of V to 360 ° . 21. An ... Meridian , either Eaft or Weft : ' Till he has paffed the Meridian , his Azimuth is Eaft ; and , when he has paffed it ...
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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...