(Encyclopedia) Roebuck, John, 1718–94, English physician, chemist, and inventor. He acted as a chemical consultant to local industries in Birmingham and invented the lead chamber process of…
(Encyclopedia) die-casting, process by which molten metal is forced by a plunger or compressed air into a metallic die and the pressure maintained until the metal has solidified. Die castings are…
(Encyclopedia) pus, thick white or yellowish fluid that forms in areas of infection such as wounds and abscesses. It is constituted of decomposed body tissue, bacteria (or other micro-organisms that…
(Encyclopedia) stereotypestereotypestĕrˈĕətīpˌ [key], plate from which printing is done, made by casting metal in a mold, usually of paper pulp. The process was patented in 1725 by the Scottish…
(Encyclopedia) Land, Edwin Herbert, 1909–91, American inventor and photographic pioneer. While at Harvard, Land became interested in the properties and manipulation of polarized light. He left…
(Encyclopedia) Crédit Mobilier of AmericaCrédit Mobilier of Americakrĕˈdĭt mōbĭlyāˈ, krādēˈ [key], ephemeral construction company, connected with the building of the Union Pacific RR and involved in…
FOOD FOR ENERGYBREAKING DOWN CARBOHYDRATESDIGESTIONRESPIRATIONENERGY RELEASEDFOOD FOR BUILDING MOLECULESAMINO ACID BUILDING BLOCKSPROTEIN CELLSDNAFIND OUT MOREThe study of the chemical processes of…
(Encyclopedia) steel, alloy of iron, carbon, and small proportions of other elements. Iron contains impurities in the form of silicon, phosphorus, sulfur, and manganese; steelmaking involves the…
World News | Business/Science News Here are the key events in United States news for the month of January, 2009. Richardson Withdraws Nomination for secretary of…
