Columbia Encyclopedia

Search results

500 results found

Glauber's salt

(Encyclopedia)Glauber's salt, common name for sodium sulfate decahydrate, Na2SO4·10H2O; it occurs as white or colorless monoclinic crystals. Upon exposure to fairly dry air it effloresces, forming powdery anhydrou...

gooseflesh

(Encyclopedia)gooseflesh, temporary rumpling of the skin into tiny bumps, also called goose bumps and goose pimples, and technically known as cutis ansirina. In response to cold or certain emotional states, such as...

bionics

(Encyclopedia)bionics, the study of living systems with the intention of applying their principles to the design of engineering systems. Drawing on interdisciplinary research in the mechanical and life sciences, bi...

Castle, Vernon, and Irene Foote

(Encyclopedia)Castle, Vernon (Vernon Castle Blythe) 1887–1918, and Irene Foote, 1893–1969, husband-and-wife dance team. Vernon Castle was an English dancer, who studied civil engineering before turning to the s...

Valletta

(Encyclopedia)Valletta vəlĕtˈə [key], city (1994 est. pop. 9,129), capital of Malta, NE Malta. It is strategically located on a rocky promontory between two deep harbors. Dockyards line the harbors and employ m...

Albuquerque

(Encyclopedia)Albuquerque ălˈbəkûrˌkē [key], city (2020 pop. 564,559), seat of Bernalillo co., W central N.Mex., on the upper Rio Grande; inc. 1890. The largest city in the state,...

methane

(Encyclopedia)methane mĕthˈān [key], CH4, colorless, odorless, gaseous saturated hydrocarbon; the simplest alkane. It is less dense than air, melts at −184℃, and boils at −161.4℃. It is combustible and c...

neodymium

(Encyclopedia)neodymium nēˌōdĭmˈēəm [key], metallic chemical element; symbol Nd; at. no. 60; at. wt. 144.242; m.p. about 1,021℃; b.p. about 3,068℃; sp. gr. 7.004 at 20℃; valence +3. Neodymium is a lust...

MacMillan, Donald Baxter

(Encyclopedia)MacMillan, Donald Baxter, 1874–1970, American arctic explorer, b. Provincetown, Mass., grad. Bowdoin College, 1898, and studied at Harvard. After a decade of teaching, he went on the expedition (190...

gadolinium

(Encyclopedia)gadolinium gădəlĭnˈēəm [key], metallic chemical element; symbol Gd; at. no. 64; at. wt. 157.25; m.p. 1,312℃; b.p. 3,233℃; sp. gr. 7.898 at 25℃; valence +3. Gadolinium is a malleable, ducti...