heavy-liquid separation
111Activities prohibited on Shabbat — Main article: Shabbat See also: Shomer Shabbat and Rabbinically prohibited activities of Shabbat The commandment to keep Shabbat as a day of rest is repeated many times in the Tanakh, the Hebrew Bible. (See for example Exodus 31:12 17 quoted …
112N1 (rocket) — This article is about the Soviet rocket. For the Japanese rocket, see N I rocket N1 N1 L3 rocket on the launchpad at Baikonur Cosmodrome Function Manned lunar carrier rocket Manufacturer OKB 1 Country of origin …
113Hydrogen — This article is about the chemistry of hydrogen. For the physics of atomic hydrogen, see Hydrogen atom. For other meanings, see Hydrogen (disambiguation). ← hydrogen → helium …
114Yttrium — (pronEng|ˈɪtriəm) is a chemical element with symbol Y and atomic number 39. It is a silvery metallic transition metal chemically similar to the lanthanoids and has historically been classified as a rare earth element. Yttrium is almost always… …
115Mars Exploration Rover — Artist s conception of rover on Mars Part of a panorama taken by the Spi …
116Chernobyl disaster — This article is about the 1986 nuclear plant accident in Ukraine. For other uses, see Chernobyl (disambiguation). Chernobyl disaster …
117light — light1 lightful, adj. lightfully, adv. /luyt/, n., adj., lighter, lightest, v., lighted or lit, lighting. n. 1. something that makes things visible or affords illumination: All colors depend on light. 2. Physics …
118aerospace industry — Introduction assemblage of manufacturing concerns that deal with vehicular flight within and beyond the Earth s atmosphere. (The term aerospace is derived from the words aeronautics and spaceflight.) The aerospace industry is engaged in the …
119Nuclear proliferation — World map with nuclear weapons development status represented by color.   Five nuclear weapons states from the NPT …
120Nuclear fuel — Process …
