BART

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J. J. Thomson and The Electron: 1897–1899: An Introduction (PDF) This being the 100th anniversary of J. J. Thomson’s discovery of the electron, the October 1897 paper in which he presented his case that cathode rays are streams of subatomic “corpuscles” is attracting a great deal of attention. Viewed from 100 years later, this paper stands out as the starting point for the research into the structure of the atom that has dominated 20th-century science.

Bay Area Rapid Transit (Wikipedia) Bay Area Rapid Transit (BART) is a rapid transit system serving the San Francisco Bay Area in California. BART serves 50 stations along six routes and 131 miles (211 kilometers) of track, including a 9-mile (14 km) spur line running to Antioch, which uses diesel multiple-unit vehicles, and a 3-mile (4.8 km) automated guideway transit line serving the Oakland International Airport. With an average of 146,500 weekday passengers as of the fourth quarter of 2022 and 41,286,400 annual passengers in 2022, BART is the fifth-busiest heavy rail rapid transit system in the United States.