Young Scientist: A Practical Journal for Amateurs, Volume 1Industrial Publication Company., 1851 |
Inhoudsopgave
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Overige edities - Alles bekijken
Veelvoorkomende woorden en zinsdelen
acid alidade altitude amount aphelion apparatus appear astronomical atmosphere axis basalt body called carbonate carbonic acid celestial sphere centre chlorite circle circle of latitude circumference clay color combination cone consequently consists copper crystals curved cylinder determined diameter direction disk distance double stars earth eclipse edge elevation entirely equal equator exhibits feet feldspar force glass gneiss greater heat heavens height horizontal inclosed inferior conjunction instrument intersection iron Jupiter latter length limestone liquid magnetic marl masses means measured mercury meridian metal mineral moon motion mountains needle object observed obtained occur octahedron opposite orbit oxyde parallax parallel passes perpendicular plane plate pole porphyry position prism produced projection rays refraction represented right angles right ascension rocks rotation sandstone Saturn screw shadow side slate sometimes spherical straight line strata surface telescope temperature trachyte triangle tube upper Uranus vapor velocity Venus vertical vessel wire
Populaire passages
Pagina 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.
Pagina 345 - If you divide it by 3? By 4? By 5? By 6? By 7? By 8?
Pagina 9 - If two triangles have two sides of the one equal to two sides of the...
Pagina 187 - ... most compact and useful, perhaps, that has yet been invented. It consists of a number of concentric grooves, whose respective diameters are regulated by the quantity of cord which must pass over their peripheries in equal spaces of time. In this system and all others where a single cord is employed, the power is to the weight as .1 to the number of parts of the cord acting on the lower block, or as 1 to twice the number of pullies in the lower block, and as in the system shown by Fig. 24, the...
Pagina 20 - The spherical excess of any spherical polygon is equal to the excess of the sum of its angles over two right angles taken as many times as the polygon has sides, less two.
Pagina 9 - Each side about the right angle is a mean proportional between the whole hypotenuse and the adjacent segment.
Pagina 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.
Pagina 87 - The geographical longitude of a place is the arc of the equator intercepted between the...
Pagina 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.
Pagina 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...