## Dictionary of the Mathematical and Physical Sciences, According to the Latest Improvements and Discoveries |

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Page 6

And since the velocities acquired in falling are as the times, the spaces will be as

the

of ...

And since the velocities acquired in falling are as the times, the spaces will be as

the

**square**of the velocities; and both the times and velocities will be as the**square**roots of the spaces. 3. The spaces described by a falling body in a seriesof ...

Page 24

Scheubelius treats pretty largely upon surds, and gives a general rule for

extracting the root of any binomial or residual, a + b, where one or both parts are

surds, and a the greater quantity; namely, that the

vario ...

Scheubelius treats pretty largely upon surds, and gives a general rule for

extracting the root of any binomial or residual, a + b, where one or both parts are

surds, and a the greater quantity; namely, that the

**square**root of it is a + Vao , , a -vario ...

Page 26

A power of any quantity is denoted by writing the , exponent over it; and a root by

the radical sign V with the exponent when different from 2, or else, with a

fractional exponent: thus ao means the

A power of any quantity is denoted by writing the , exponent over it; and a root by

the radical sign V with the exponent when different from 2, or else, with a

fractional exponent: thus ao means the

**square**of a ; and Va, or a", means the**square**... Page 29

To measure an accessible or inaccessible Object, by the Geometrical

Plate I. fig. 4.) Having fixed the instrument at any place C, turn the

the centre of motion D, till the top of the object B is perceived in 9 the direction of

...

To measure an accessible or inaccessible Object, by the Geometrical

**Square**. (Plate I. fig. 4.) Having fixed the instrument at any place C, turn the

**square**aboutthe centre of motion D, till the top of the object B is perceived in 9 the direction of

...

Page 36

Required the angle of a

angle. 2. Required the angle of a pentagon? 72 Here n=5-5. = 2.5 Hence 90° 3. ×

; = 90° x 11 25 s 108° = angle required. The sum of all the external angles of any

...

Required the angle of a

**square**: 72 2 Here n = 4, + = 2, Hence 90° x 2 = 90° =angle. 2. Required the angle of a pentagon? 72 Here n=5-5. = 2.5 Hence 90° 3. ×

; = 90° x 11 25 s 108° = angle required. The sum of all the external angles of any

...

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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 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 logarithm longitude means measure mercury meridian method moon motion multiplied neral 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 signs sine solid space specific gravity sphere spherical square stars subtangent supposed surd surface tangent telescope tion triangle tube velocity weight whence wind

### Popular passages

Page 456 - 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 524 - 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 312 - 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 209 - ... 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 78 - 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 215 - 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 490 - ... 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 412 - Multiply the numerators together for a new numerator, and the denominators together for a new denominator.

Page 467 - 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 15 - ... 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.