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Brachystochrone :: Brachystochrone (n.) A curve, in which a body, starting from a given point, and descending solely by the force of gravity, will reach another given point in a shorter time than it could by any other path. This curve of quickest descent, as it is sometimes called, is, in a vacuum, the same as the cycloid..

Slide :: Slide (v. t.) Especially, to move over snow or ice with a smooth, uninterrupted motion, as on a sled moving by the force of gravity, or on the feet..

Magnesium :: Magnesium (n.) A light silver-white metallic element, malleable and ductile, quite permanent in dry air but tarnishing in moist air. It burns, forming (the oxide) magnesia, with the production of a blinding light (the so-called magnesium light) which is used in signaling, in pyrotechny, or in photography where a strong actinic illuminant is required. Its compounds occur abundantly, as in dolomite, talc, meerschaum, etc. Symbol Mg. Atomic weight, 24.4. Specific gravity, 1.75..

Lactometer :: Lactometer (n.) An instrument for estimating the purity or richness of milk, as a measuring glass, a specific gravity bulb, or other apparatus..

Areometer :: Areometer (n.) An instrument for measuring the specific gravity of fluids; a form hydrometer.

Rhodium :: Rhodium (n.) A rare element of the light platinum group. It is found in platinum ores, and obtained free as a white inert metal which it is very difficult to fuse. Symbol Rh. Atomic weight 104.1. Specific gravity 12..

Down :: Down (adv.) In the direction of gravity or toward the center of the earth; toward or in a lower place or position; below; -- the opposite of up.

Stereometric :: Stereometer (n.) An instrument for determining the specific gravity of liquid bodies, porous bodies, and powders, as well as solids..

Hydrometrical :: Hydrometrical (a.) Of or pertaining to an hydrometer, or to the determination of the specific gravity of fluids..

Pendulum :: Pendulum (n.) A body so suspended from a fixed point as to swing freely to and fro by the alternate action of gravity and momentum. It is used to regulate the movements of clockwork and other machinery.

Jinny Road :: "Jinny road () An inclined road in a coal mine, on which loaded cars descend by gravity, drawing up empty ones..

Fall :: Fall (n.) The act of falling; a dropping or descending be the force of gravity; descent; as, a fall from a horse, or from the yard of ship..

Pregravitate :: Pregravitate (v. i.) To descend by gravity; to sink.

Geotropism :: Geotropism (n.) A disposition to turn or incline towards the earth; the influence of gravity in determining the direction of growth of an organ.

Gravimeter :: Gravimeter (n.) An instrument for ascertaining the specific gravity of bodies.

Iridium :: Iridium (n.) A rare metallic element, of the same group as platinum, which it much resembles, being silver-white, but harder, and brittle, and indifferent to most corrosive agents. With the exception of osmium, it is the heaviest substance known, its specific gravity being 22.4. Symbol Ir. Atomic weight 192.5..

Foot Pound :: Foot pound () A unit of energy, or work, being equal to the work done in raising one pound avoirdupois against the force of gravity the height of one foot..

Solemnness :: Solemnness (n.) The state or quality of being solemn; solemnity; impressiveness; gravity; as, the solemnness of public worship..

Ice :: Ice (n.) Water or other fluid frozen or reduced to the solid state by cold; frozen water. It is a white or transparent colorless substance, crystalline, brittle, and viscoidal. Its specific gravity (0.92, that of water at 4� C. being 1.0) being less than that of water, ice floats..

Osmium :: Osmium (n.) A rare metallic element of the platinum group, found native as an alloy in platinum ore, and in iridosmine. It is a hard, infusible, bluish or grayish white metal, and the heaviest substance known. Its tetroxide is used in histological experiments to stain tissues. Symbol Os. Atomic weight 191.1. Specific gravity 22.477..

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