A general view of the sciences and arts, Volume 1 |
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Page ix
... Sailing ..... The Telescope XXIX . Navigation ....... Plane Sailing Traverse Sailing Middle Latitude Sailing .................................... ... 202 Mercator's Sailing ..................... 202 Current Sailing 205 ........
... Sailing ..... The Telescope XXIX . Navigation ....... Plane Sailing Traverse Sailing Middle Latitude Sailing .................................... ... 202 Mercator's Sailing ..................... 202 Current Sailing 205 ........
Page 132
... sailing from land remaining in sight longer than their hulks ; and by that of the peaks of mountains , and steeples of towers , being first visible to those who are approaching the shore from sea . The earth revolves about its axis in ...
... sailing from land remaining in sight longer than their hulks ; and by that of the peaks of mountains , and steeples of towers , being first visible to those who are approaching the shore from sea . The earth revolves about its axis in ...
Page 175
... sailors , it is usually called the line . It is divided into 360 degrees , reckoning eastward from Aries . It is also generally num- bered by a second row of figures , eastward and westward , to 180 ° ; the figures nearest the equa ...
... sailors , it is usually called the line . It is divided into 360 degrees , reckoning eastward from Aries . It is also generally num- bered by a second row of figures , eastward and westward , to 180 ° ; the figures nearest the equa ...
Page 184
... the pencils of rays by which objects be- come visible to us come directly from the objects themselves 184 A GENERAL VIEW OF The Transit Instrument ................................. The Micrometer Parallel Sailing The Telescope.
... the pencils of rays by which objects be- come visible to us come directly from the objects themselves 184 A GENERAL VIEW OF The Transit Instrument ................................. The Micrometer Parallel Sailing The Telescope.
Page 188
... sail much faster than in ancient times , but can also tack , or be turned , in every different direction . The adventurous mariner now finds his way across the trackless ocean to the most distant regions of the globe , and can determine ...
... sail much faster than in ancient times , but can also tack , or be turned , in every different direction . The adventurous mariner now finds his way across the trackless ocean to the most distant regions of the globe , and can determine ...
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.