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Biography
Agassiz, (Jean) Louis Rodolphe (1807–1873)
Biography
Agricola, Georgius (1490–1555)
Biography
Aiken, Howard Hathaway (1900–1973)
Biography
Aleksandrov, Pavel Sergeevich (1896–1982)
Biography
Amsler-Laffon, Jakob (1823–1912)
Article
Antenna (electromagnetism)
A conductor whose purpose is to emit and/or receive electromagnetic waves using the bulk oscillations of electric charges within the conductor. The conduction electrons in antennas are free to move throughout the conductor. The electrons form a bulk…
Biography
Apollonius of Perga (c. 245–c.190 BC)
Biography
Archimedes (c. 287–212 BC)
Biography