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

Baryta :: Baryta (n.) An oxide of barium (or barytum); a heavy earth with a specific gravity above 4.

Lead :: Lead (n.) One of the elements, a heavy, pliable, inelastic metal, having a bright, bluish color, but easily tarnished. It is both malleable and ductile, though with little tenacity, and is used for tubes, sheets, bullets, etc. Its specific gravity is 11.37. It is easily fusible, forms alloys with other metals, and is an ingredient of solder and type metal. Atomic weight, 206.4. Symbol Pb (L. Plumbum). It is chiefly obtained from the mineral galena, lead sulphide..

Bismuth :: Bismuth (n.) One of the elements; a metal of a reddish white color, crystallizing in rhombohedrons. It is somewhat harder than lead, and rather brittle; masses show broad cleavage surfaces when broken across. It melts at 507¡ Fahr., being easily fused in the flame of a candle. It is found in a native state, and as a constituent of some minerals. Specific gravity 9.8. Atomic weight 207.5. Symbol Bi..

Aluminium :: Aluminium (n.) The metallic base of alumina. This metal is white, but with a bluish tinge, and is remarkable for its resistance to oxidation, and for its lightness, having a specific gravity of about 2.6. Atomic weight 27.08. Symbol Al..

Opal :: Opal (n.) A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity..

Light :: Light (superl.) Having little, or comparatively little, weight; not tending to the center of gravity with force; not heavy..

Gravity :: Gravity (a.) Importance, significance, dignity, etc; hence, seriousness; enormity; as, the gravity of an offense..

Heavy Spar :: Heavy spar () Native barium sulphate or barite, -- so called because of its high specific gravity as compared with other non-metallic minerals..

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..

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

Tautochrone :: Tautochrone (n.) A curved line, such that a heavy body, descending along it by the action of gravity, will always arrive at the lowest point in the same time, wherever in the curve it may begin to fall; as, an inverted cycloid with its base horizontal is a tautochrone..

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

Galactometer :: Galactometer (n.) An instrument for ascertaining the quality of milk (i.e., its richness in cream) by determining its specific gravity; a lactometer..

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..

Barite :: Barite (n.) Native sulphate of barium, a mineral occurring in transparent, colorless, white to yellow crystals (generally tabular), also in granular form, and in compact massive forms resembling marble. It has a high specific gravity, and hence is often called heavy spar. It is a common mineral in metallic veins..

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

Platinum :: Platinum (n.) A metallic element, intermediate in value between silver and gold, occurring native or alloyed with other metals, also as the platinum arsenide (sperrylite). It is heavy tin-white metal which is ductile and malleable, but very infusible, and characterized by its resistance to strong chemical reagents. It is used for crucibles, for stills for sulphuric acid, rarely for coin, and in the form of foil and wire for many purposes. Specific gravity 21.5. Atomic weight 194.3. Symbol Pt. Fo

Impertrubable :: Impertrubable (a.) Incapable of being disturbed or disconcerted; as, imperturbable gravity..

Gravity :: Gravity (a.) The state of having weight; beaviness; as, the gravity of lead..

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