## Iconographic Encyclopaedia of Science, Literature, and Art, Volume 1 |

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### Contents

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### Common terms and phrases

according amount angle apparatus appear atmosphere attached axis base becomes body called centre circle closed color combination consequently consists constructed contains copper crystals curved cylinder described determine diameter direction distance divided draw earth edge elevation employed entirely equal equator exhibits extremity fall feet figure fixed force four given glass greater half heat horizontal indicated intersection iron known latter length less light liquid lower magnetic manner masses means measured mercury metal moon motion mountains moved necessary object observed obtained occur opening opposite parallel passes perpendicular plane plate pole position present pressure principal produced projection proportion rays remains represented respect rocks screw seen shadow sides similar solid sometimes space stand stars straight line supposed surface telescope temperature triangle tube turned upper various vertical vessel weight

### Popular passages

Page 9 - The square described on the hypothenuse of a rightangled triangle is equal to the sum of the squares described on the other two sides.

Page 368 - From the foregoing statements it may be safely inferred that " the mean height of the barometer at the level of the sea being the same in every part of the globe...

Page 9 - If two triangles have two sides of the one equal to two sides of the...

Page 20 - The area of a spherical triangle is proportional to the excess of the sum of its angles over two right angles (called the spherical excess).

Page 9 - Each side about the right angle is a mean proportional between the whole hypotenuse and the adjacent segment.

Page 188 - W-TJT, or the force is to the weight as the height of the plane to its base.

Page 68 - Hence a straight line drawn from the vertex of an isosceles triangle, to the middle of the base, is perpendicular to that base, and divides the vertical angle into two equal parts.

Page 87 - The geographical longitude of a place is the arc of the equator intercepted between the...

Page 9 - The measure of each angle of an equilateral triangle is 60°. 11. a. A triangle that has a right angle is called a right triangle. b. In a right triangle, the two acute angles are complementary. c.

Page 206 - To find the time in which pendulums of different lengths would vibrate, that which vibrates seconds being 39.2 inches. The time of the vibrations of pendulums are to each other, as the square roots of their lengths ; or, their lengths are as the squares of their times of vibrations. RULE. As the square of one second is to the square...