Dictionary of the Mathematical and Physical Sciences, According to the Latest Improvements and DiscoveriesJames Mitchell |
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Page 2
... longitude . 2. To find the aberration of the same star in latitude and longitude , when the earth is 30 ° from syzy gies . Here sine of 30 ° · 5 ; and , there- fore , 19.31 " X 59'67 " , the aber ration in latitude . If the earth be 30 ...
... longitude . 2. To find the aberration of the same star in latitude and longitude , when the earth is 30 ° from syzy gies . Here sine of 30 ° · 5 ; and , there- fore , 19.31 " X 59'67 " , the aber ration in latitude . If the earth be 30 ...
Page 3
... longitude , varies accord ing to their situation . That of the sun , however , is invariable , being constantly 20 " ; and this may alter his declination , by a quantity which varies from 0 to 8 " , being greatest at the equinoxes , and ...
... longitude , varies accord ing to their situation . That of the sun , however , is invariable , being constantly 20 " ; and this may alter his declination , by a quantity which varies from 0 to 8 " , being greatest at the equinoxes , and ...
Page 28
... longitude at sea . ID : ED IA : AB ; ALMUCANTARS , OR ALMA- that is , by multiplying the second CANTARS , circles parallel to the and third terms , and dividing by horizon , passing through every the first , we shall have the whole ...
... longitude at sea . ID : ED IA : AB ; ALMUCANTARS , OR ALMA- that is , by multiplying the second CANTARS , circles parallel to the and third terms , and dividing by horizon , passing through every the first , we shall have the whole ...
Page 41
... longitude is 180 ° . It is therefore night with one , when it is day with the other ; and summer with one , when it is win- ter with the other . APERTURE , in Hydraulics , is the hole through which a spouting fluid passes . APERTURE ...
... longitude is 180 ° . It is therefore night with one , when it is day with the other ; and summer with one , when it is win- ter with the other . APERTURE , in Hydraulics , is the hole through which a spouting fluid passes . APERTURE ...
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Dictionary of the Mathematical and Physical Sciences: According to the ... James Mitchell No preview available - 2017 |
Dictionary of the Mathematical and Physical Sciences: According to the ... James Mitchell No preview available - 2017 |
Common terms and phrases
absciss Algebra altitude appears Arithmetic Astronomy axis body called centre circle co-efficients conic sections consequently cosine cube cubic equation curve cycloid cylinder degree denominator denote diameter distance diurnal motion divided divisor earth ecliptic ellipse equa equal equation feet figure fluid fluxion force formula fraction frustrum Geometry given glass gravity greater greatest heat Hence horizon hyperbola inches instrument latitude length less lever logarithm longitude means measure mercury meridian method moon motion multiplied object observed orbit ordinate parabola parallax parallel passing perihelion perpendicular plane poles produced proportion quantity radius ratio rays refraction right angles right ascension right line roots side sine solid space specific gravity sphere spherical square stars subtangent supposed surd surface tance tang tangent telescope tion triangle tube velocity weight whence wind
Popular passages
Page 440 - 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 508 - In higher works on trigonometry, it has been demonstrated that, in any triangle, the sines of the angles are proportional to the lengths of the sides opposite to them. In other words, sin A : sin B :: BC : AC; or, sin A : sin C:: BC : AB, and sin B : sin C::AC : A B. Hence, we have sin 44° 40' : sin 56° 20
Page 292 - A law presupposes an agent ; for it is only the mode, according to which an agent proceeds : it implies a power ; for it is the order, according to which that power acts. Without this agent, without this power, which are both distinct from itself, the law does nothing ; is nothing. The expression, ' the law of metallic nature...
Page 203 - ... winch, with as little labour as it takes to wind up a jack, though the weight of the iron, tin, and wooden circle, is about 1000 pounds.
Page 74 - In foul weather, when the mercury rises much and high, and so continues for two or three days before the foul weather is quite over, then expect a continuance of fair weather to follow.
Page 209 - Specific Gravity of a body is the relation of its weight, compared with the weight of some other body of the same magnitude. A body immersed in a fluid will sink if its specific gravity be greater than that of the fluid; but if it be less, the body will rise to the top, and will be only partly uncovered.
Page 476 - ... the object he views. There is no small speculum, but the magnifiers are applied immediately to the first focal image. From the opening of the telescope, near the place of the eye glass, a speaking-pipe runs down to the bottom of the tube, where it...
Page 398 - Multiply the numerators together for a new numerator, and the denominators together for a new denominator.
Page 459 - And in measuring any of these station-distances, mark accurately where these lines meet with any hedges, ditches, roads, lanes, paths, rivulets, &c ; and where any remarkable object is placed, by measuring its distance from the station-line ; and where a perpendicular From it cuts that line. And thus as you go along any main...
Page 11 - ... of the motion seemed to be from the upper part downwards. It appears also that they were in some danger of having the balloon burnt altogether; as the Marquis observed several round holes made by the fire in the lower part of it, which alarmed him considerably, and, indeed, not without reason.