A general view of the sciences and arts, Τόμος 1 |
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Σελίδα 122
... star and law . It is a sublime and useful science . It may be regarded as the triumph of philosophy and the human mind . It has conferred upon mankind the most valuable benefits , as it certainly has been the grand conductor and friend ...
... star and law . It is a sublime and useful science . It may be regarded as the triumph of philosophy and the human mind . It has conferred upon mankind the most valuable benefits , as it certainly has been the grand conductor and friend ...
Σελίδα 123
... stars for that day ; with conjectures , from their rising , con- cerning the weather . The position of the pyra- mids , those wonderful structures , seems to con- firm the claim of the Egyptians to a very early knowledge of astronomy ...
... stars for that day ; with conjectures , from their rising , con- cerning the weather . The position of the pyra- mids , those wonderful structures , seems to con- firm the claim of the Egyptians to a very early knowledge of astronomy ...
Σελίδα 124
... stars . Eudoxus , the Cnidian , made great progress in astronomy , and was acquainted with the me- thod of drawing a ... stars , into fixed stars , and planets . The former are those stars which retain always the same relative situation ...
... stars . Eudoxus , the Cnidian , made great progress in astronomy , and was acquainted with the me- thod of drawing a ... stars , into fixed stars , and planets . The former are those stars which retain always the same relative situation ...
Σελίδα 125
... stars have been arranged by astronomers in six classes , or orders . Thus , in proportion to their size and splendour , they are called stars of the first , second , third , fourth , fifth , and sixth magnitude . The ancients divided ...
... stars have been arranged by astronomers in six classes , or orders . Thus , in proportion to their size and splendour , they are called stars of the first , second , third , fourth , fifth , and sixth magnitude . The ancients divided ...
Σελίδα 126
... stars , but through a telescope , present the appearance of broad illu- minated patches : in some of which is one star , and in others more are discerned . These are named Nebulæ , or cloudy stars . The sun , and the planets which move ...
... stars , but through a telescope , present the appearance of broad illu- minated patches : in some of which is one star , and in others more are discerned . These are named Nebulæ , or cloudy stars . The sun , and the planets which move ...
Συχνά εμφανιζόμενοι όροι και φράσεις
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
Δημοφιλή αποσπάσματα
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.
Σελίδα 32 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees...
Σελίδα 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.
Σελίδα 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.
Σελίδα 55 - PROBLEM I. To find the area of a parallelogram, whether it be a square, a rectangle, a rhombus, or a rhomboides.
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.