water hammer calculation
21Novelty (locomotive) — Novelty Contemporary drawing of Novelty Power type Steam Builder John Ericsson and John Braithwaite Configuration …
22Spain — /spayn/, n. a kingdom in SW Europe. Including the Balearic and Canary islands, 39,244,195; 194,988 sq. mi. (505,019 sq. km). Cap.: Madrid. Spanish, España. * * * Spain Introduction Spain Background: Spain s powerful world empire of the 16th and… …
23Character mask — Part of a series on Marxism …
24Charles Wheatstone — Wheatstone, drawn by Samuel Laurence in 1868 Born 6 …
25Che Guevara — Che redirects here. For other uses, see Che (disambiguation). Che Guevara …
26West Virginia — This article is about the U.S. state of West Virginia. For other uses, see West Virginia (disambiguation). State of West Virginia …
27Wicked Witch of the West — Infobox character colour = yellow colour text = series = Oz name = The Wicked Witch of the West caption = The Wicked Witch of the West threatening to beat Toto with her umbrella Art by W.W. Denslow. first = The Wonderful Wizard of Oz (1900) last …
28MESOPOTAMIA — The original article in the first edition of the Encyclopaedia Judaica traced Mesopotamian history to its earliest beginnings and provided a detailed survey of Mesopotamian literature and institutions. With the availability of such tools as J.… …
29Casualties of the Iraq War — This article is about casualties for the war beginning in 2003. For other wars, see Iraq war (disambiguation) …
30Early world maps — Ptolemy s world map (2nd century) in a 15th century reconstruction Early world maps cover depictions of the world from the Iron Age to the Age of Discovery and the emergence of modern geography during the early modern period …
