The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtE. Duyckinck, 1811 - 508 σελίδες |
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Σελίδα
... Logarithms try Sect . 1. Decimal Fractions 2. Involution and Evolu- tion 4. Elements of Geome- Mathematical Instru- 284 15 Promiscuous Ques- tions 295 23 PART III . 37 Sect . 1. Introductory Princi- ments 74 ples 298 5. Trigonometry 99 ...
... Logarithms try Sect . 1. Decimal Fractions 2. Involution and Evolu- tion 4. Elements of Geome- Mathematical Instru- 284 15 Promiscuous Ques- tions 295 23 PART III . 37 Sect . 1. Introductory Princi- ments 74 ples 298 5. Trigonometry 99 ...
Σελίδα
... Logarithms 4. Elements of Geome- Mathematical Instru- 5. Trigonometry 284 Promiscuous Ques- 15 tions 295 23 PART III . 37 1280 Sect . 1. Introductory Princi- 74 ples 298 99 ments PART II . Sect . 1. The Chain 134 The Circumferentor 152 ...
... Logarithms 4. Elements of Geome- Mathematical Instru- 5. Trigonometry 284 Promiscuous Ques- 15 tions 295 23 PART III . 37 1280 Sect . 1. Introductory Princi- 74 ples 298 99 ments PART II . Sect . 1. The Chain 134 The Circumferentor 152 ...
Σελίδα 2
... Logarithms , Geo- metry and Plane Trigonometry . SECTION I. DECIMAL FRACTIONS . If we suppose unity or any one thing to be di vided into any assigned number of equal parts , this number is called the denominator ; and if we chuse to ...
... Logarithms , Geo- metry and Plane Trigonometry . SECTION I. DECIMAL FRACTIONS . If we suppose unity or any one thing to be di vided into any assigned number of equal parts , this number is called the denominator ; and if we chuse to ...
Σελίδα 23
... LOGARITHMS . LOGARITHMS are a series of numbers , so contri- ved , that by them the work of mutiplication may be performed by addition ; and the operation of di- vision may be done by subtraction . Or , Loga- rithms are the indices , or ...
... LOGARITHMS . LOGARITHMS are a series of numbers , so contri- ved , that by them the work of mutiplication may be performed by addition ; and the operation of di- vision may be done by subtraction . Or , Loga- rithms are the indices , or ...
Σελίδα 24
... Logarithm . The computation of these fractional parts , is called making Loga- rithms ; and the most troublesome part of this work is to make the Logarithms of Prime Num- bers , or those which cannot be divided by any other numbers than ...
... Logarithm . The computation of these fractional parts , is called making Loga- rithms ; and the most troublesome part of this work is to make the Logarithms of Prime Num- bers , or those which cannot be divided by any other numbers than ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
acres altitude Answer arch azimuth base bearing blank line centre chains and links chord circle circumferentor Co-sec Co-tang column compasses contained decimal difference distance line divided divisions draw east Ecliptic edge feet field-book figures fore four-pole chains geom given number half the sum Horizon glass hypothenuse inches instrument Lat Dep Lat latitude length logarithm measure meridian distance multiplied natural co-sine natural sine needle Nonius number of degrees object observed off-sets opposite parallel parallelogram pegs perches perpendicular plane pole pole star Portmarnock PROB protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect Sextant side sights square station stationary distance subtract Sun's survey taken Tang tangent theo theodolite trapezium triangle ABC trigonometry two-pole chains vane versed sine vulgar fraction whence
Δημοφιλή αποσπάσματα
Σελίδα 38 - 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 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 197 - RULE. From half the sum of the three sides subtract each side severally.
Σελίδα 106 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Σελίδα 27 - The VERSED SINE of an arc is that part of the diameter which is between the sine and the arc. Thus BA is the versed sine of the arc AG.