The designs of Barron and Chubb were based on the use of movable levers, but Joseph Bramah, a prolific inventor, developed an alternative method in 1784. His lock used a cylindrical key with precise notches along the surface; these moved the metal slides that impeded the turning of the bolt into an exact alignment, allowing the lock to open. The lock was at the limits of the precision manufacturing capabilities of the time and was said by its inventor to be unpickable. In the same year Bramah started the Bramah Locks company at 124 Piccadilly, and displayed the ""Challenge Lock"" in the window of his shop from 1790, challenging ""...the artist who can make an instrument that will pick or open this lock"" for the reward of £200. The challenge stood for over 67 years until, at the Great Exhibition of 1851, the American locksmith Alfred Charles Hobbs was able to open the lock and, following some argument about the circumstances under which he had opened it, was awarded the prize. Hobbs' attempt required some 51 hours, spread over 16 days.

Page and Brin used the former's basic HTML programming skills to set up a simple search page for users, as they did not have a web page developer to create anything visually elaborate. They also began using any computer part they could find to assemble the necessary computing power to handle searches by multiple users. As their search engine grew in popularity among Stanford users, it required additional servers to process the queries. In August 1996, the initial version of Google, still on the Stanford University website, was made available to Internet users.

Herschel, C, The Two Books on The Water Supply of the City of Rome of Frontinus, (trans with explanatory chapters) New England Water Works Association (1973).

Williams, Tami Michelle (2007). University of California Los Angeles, ed. ""Beyond Impressions: The Life and Films of Germaine Dulac from Aesthetics to Politics"". p. 366.

Brock, Thomas D. (August 1, 1997). ""The Value of Basic Research: Discovery of Thermus aquaticus and Other Extreme Thermophiles"". Genetics 146 (4): 1207–10. PMC 1208068. PMID 9258667.

Sulentic, Jack W., and William G. Tifft, ""The Revised New General Catalogue of Nonstellar Astronomical Objects (RNGC)"". Tucson, Arizona:University of Arizona Press, 1973. (4016,0)

For a graphical version of this list, see list of countries by population (graphical). See also List of sovereign states and dependent territories by population density and the list of regional organizations by population.

(Kiingereza) The Tragical History of Dr. Faustus, New York City, January 8, 1937 Production notebook, Conductor's Score, and related documents from the digital collection The New Deal Stage at the Library of Congress. Retrieved on 8/25/2009