The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art. With a New Set of Accurate Mathematical TablesA. S. Barnes, 1839 - 412 páginas |
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Página 11
... suppose unity or any one thing to be divided into any assigned number of equal parts , this number is called the de- nominator ; and if we choose to take any number 1 * Bect PART Decimal Fractions Involution and Evolu-
... suppose unity or any one thing to be divided into any assigned number of equal parts , this number is called the de- nominator ; and if we choose to take any number 1 * Bect PART Decimal Fractions Involution and Evolu-
Página 12
... called the numerator of a fraction . The numerator , in the vulgar form , is always written over the denominator , and these are separated by a small line thus , or ; the first of these is called three - fourths , and the latter five ...
... called the numerator of a fraction . The numerator , in the vulgar form , is always written over the denominator , and these are separated by a small line thus , or ; the first of these is called three - fourths , and the latter five ...
Página 22
... called the root or first power of this number ; and its other powers are the products that result from multiplying the number by itself , and the last product by the same number again , and so on to any number of multiplications . The ...
... called the root or first power of this number ; and its other powers are the products that result from multiplying the number by itself , and the last product by the same number again , and so on to any number of multiplications . The ...
Página 23
... called surd , or irrational roots . Roots are usually represented by these characters or ex- ponents : ✓ , or 14 which signifies the square root ; thus , 9 , or 91 = 3 . yor cube root ; 18 orbiquadrate root ; 64 , or 643 = 4 . 1 16 ...
... called surd , or irrational roots . Roots are usually represented by these characters or ex- ponents : ✓ , or 14 which signifies the square root ; thus , 9 , or 91 = 3 . yor cube root ; 18 orbiquadrate root ; 64 , or 643 = 4 . 1 16 ...
Página 29
... called the index ; and the fractional part will be called the logarithm . The computation of these fractional parts is called making logarithms ; and the most troublesome part of this work is to make the logarithms of prime numbers , or ...
... called the index ; and the fractional part will be called the logarithm . The computation of these fractional parts is called making logarithms ; and the most troublesome part of this work is to make the logarithms of prime numbers , or ...
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Términos y frases comunes
ABCD acres altitude arch base bearing blank line centre chains and links circle circumferentor column compasses contained Cosine Sine cube root decimal diagonal diameter difference of latitude divided divisions divisor draw east ecliptic edge EXAMPLE feet field-book figure four-pole chains geometrical series given angle given number half the sum height Hence horizon glass hypothenuse inches instrument length logarithm manner measure meridian distance multiplied needle nonius number of degrees object observed opposite parallelogram perches perpendicular plane prob PROBLEM proportion protractor quadrant quotient radius rhombus right angles right line scale of equal screw secant sect sector semicircle side Sine Cotang square root station stationary distance subtract suppose survey taken Tang tangent theo theodolite THEOREM trapezium triangle ABC trigonometry two-pole chains vane vulgar fraction whence
Pasajes populares
Página 49 - 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.
Página 41 - 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.
Página 41 - The radius of a circle is a right line drawn from the centre to the circumference.
Página 45 - A lemma is something which is premised, or demonstrated, in order to render what follows more easy. A corollary is a consequent truth derived immediately from some preceding truth or demonstration.
Página 35 - DIVISION BY LOGARITHMS. RULE. From the logarithm of the dividend subtract the logarithm of the divisor, and the number answering to the remainder will be the quotient required.
Página 21 - Then multiply the second and third terms together, and divide the product by the first term: the quotient will be the fourth term, or answer.