A general view of the sciences and arts, Volume 1 |
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Page ix
... Clock ...... 183 The Astronomical Quadrant ......... 183 The Astronomical or Equatorial Sector 183 ................................. The Transit Instrument ................................. .... 184 The Micrometer 184 Parallel Sailing ....
... Clock ...... 183 The Astronomical Quadrant ......... 183 The Astronomical or Equatorial Sector 183 ................................. The Transit Instrument ................................. .... 184 The Micrometer 184 Parallel Sailing ....
Page x
... Quadrant .................................... ........ 207 The Sextant ... 207 The Circular Instrument of Reflection 208 The Ship's Journal XXXI . Geology or Geognosy .... 208 210 XXXII . XXXIII . XXXIV . Theories of the Earth ...
... Quadrant .................................... ........ 207 The Sextant ... 207 The Circular Instrument of Reflection 208 The Ship's Journal XXXI . Geology or Geognosy .... 208 210 XXXII . XXXIII . XXXIV . Theories of the Earth ...
Page 32
... quadrant , that is , each fourth part to consist of 100 degrees ; the next subdivision is the 10th of a degree ; the next , the 100th , and so on ; and hence the measure of an angle is expressed by them , in the same man- ner as any ...
... quadrant , that is , each fourth part to consist of 100 degrees ; the next subdivision is the 10th of a degree ; the next , the 100th , and so on ; and hence the measure of an angle is expressed by them , in the same man- ner as any ...
Page 34
... quadrant ; thus the complement of the arch BD , is BCA , the remaining part of the quadrant , DBA . 5. A sine or right sine of an arch , is a right line drawn from one extremity of that arch , per- pendicular to the diameter touching ...
... quadrant ; thus the complement of the arch BD , is BCA , the remaining part of the quadrant , DBA . 5. A sine or right sine of an arch , is a right line drawn from one extremity of that arch , per- pendicular to the diameter touching ...
Page 36
... quadrant . The natural sines , tangents , cosines , & c . are calculated to a radius of 1 , but the logarithmic sines , tangents , & c . are calculated to a radius of 10,000,000,000 or 1 , with ten ciphers ; so that the latter are the ...
... quadrant . The natural sines , tangents , cosines , & c . are calculated to a radius of 1 , but the logarithmic sines , tangents , & c . are calculated to a radius of 10,000,000,000 or 1 , with ten ciphers ; so that the latter are the ...
Common terms and phrases
algebra arch arithmetic astronomy axis body breadth called cask centre CHAP circle circumference column compound cone conic sections contained Corollary cube cyphers decimals definition degrees denomination denotes diameter distance diurnal motion divided dividend division divisor earth ellipse equator Example expressed feet figure fluid four frustum gallons geometrical series geometry given numbers globe gravity greater height horizontal hundred hyperbola hypothenuse idea improper fraction inches instrument integers length logarithms magnitude mathematics Mercury meridian miles mixed mathematics moon motion Multiply opposite angles parabola parallel perpendicular plane triangle plate poles proportion quadrant quantity quotient radius remainder right angles right line rule for finding sailing secant sexagesimal ship sides signifies solid space specific gravity sphere spherical trigonometry square subtract supposed surface tangent telescope term theorem thousand tion TRIGONO trigonometry vertex vertical arc vessel vulgar fractions wheel
Popular passages
Page 60 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.
Page 227 - Every body continues in a state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by a force impressed upon it.
Page 228 - To every action there is always opposed an equal reaction: or, the mutual actions of two bodies upon each other are always equal and directed to contrary pans.
Page 32 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees...
Page 90 - To reduce a mixed number to an improper fraction, Multiply the whole number by the denominator of the fraction, and to the product add the numerator; under this sum write the denominator.
Page 228 - The change of motion is proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.
Page 55 - PROBLEM I. To find the area of a parallelogram, whether it be a square, a rectangle, a rhombus, or a rhomboides.
Page 157 - It is bounded on the North by the Arctic Ocean ; on the East by the Pacific Ocean ; on the South by the Indian Ocean ; and on the West by the Red Sea, the Mediterranean Sea, the Caspian Sea, and the Oural Mountains.
Page 97 - Multiply the first and second terms together, and divide the product by the third ; the quotient will be the answer in the same denomination as the middle term was reduced into.
Page 19 - ... When a straight line standing on another straight line, makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it. 11. An obtuse angle is that which is greater than a right angle. 12. An acute angle is that which is less than a right angle. 13. A term or boundary is the extremity of any thing.