Word: vapor
(lookup in dictionary)
(lookup stats)
Dates: during 1940-1949
Sort By: most recent first
(reverse)
With the spies came the bombs, sprayed by wave after wave of Soviet planes. In the clear cold air they flew high, trailing a thin line of vapor from their exhausts, dropping clusters of small bombs that burst into flames when they hit. Systematically the Russians went after every centre of communications: railways, telegraph and telephone centres, roadheads, bridges, factories. (They got a ski factory and the Finns were short of skis.) This meant that civilians had to bear the brunt of the bombings. Typical of the destruction wrought was the case of Sortavala, vital railway junction on the north...
Carburization turns a soft iron wire into steel in one minute. The wire is heated in a hydrogen atmosphere to prevent oxidation. The hydrogen, bubbling through alcohol, picks up alcohol vapor. This vapor contains carbon, which inter acts with the hot iron to make it steel. The Westinghouse people devised this exhibit to show the new importance of controlled atmospheres in hardening commercial steel parts...