HALLWACHS, Wihelm. “Über den Einfluss des Lichtes auf electrostatisch geladene Körper” by Wilhelm Hallwachs” in Annalen der Physik und Chemie, 1888; Leipzig, Johann Ambrosius Barth, vol 33 pp. 301– 312. Recently bound in period style leather and boards. Appears pristine other than very small very light library stamp on title page. $550
“Hallwachs (1859-1922) was one of the pioneers of modern physics. An experimental physicist, he laid the foundations for research on photoelectric processes...At Leipzig in 1888 he investigated, following the model of Heinrich Hertz’s studies, photoelectric activity, establishing that through absorption of ultraviolet light, negatively charged metal plates discharge and uncharged metal plates become positively charged. This process, which is called the photoelectric effect or Hallwachs effect, forms the basis for the physics of the photoelectric cell and was theoretically interpreted in 1905 in Einstein’s work on light quanta....”--Complete Dictionary of Scientific Biography online
“Hallwachs wrote about 50 scientific papers. The most important are “Ueber den Einfluss des Lichtes auf electrostatisch geladene Körper,”[this paper] in Annalen der Physik und Chemie, n.s. 33 (1888), 301–312; “Ueber die Electrisierung von Metallplatten durch Bestrahlung mit electrischem Licht,” ibid., n.s. 34 (1888), 731–734; “Ueber den Zusammenhang des Electricitätsverlustes durch Beleuchtung mit der Lichtabsorption,” ibid., n.s. 37 (1889), 666–675.”--DSB
”In 1888 Hallwachs formulated the hypothesis that a conductive plate on which to focus ultraviolet light carries a positive charge because the electrons are gouged out. This happened with more intensity in selenium. The phenomenon was seen in the same year by A. Righi. The phenomenon was called 'Hallwachs-Effekt', now called the photoelectric effect. The investigation of the photoelectric effect laid the foundation for the development of the photoelectric cell, photo electricity and Albert Einstein's quantum light hypothesis.”--Wikipedia
“The photoelectric effect forms the basis for the physics of the photoelectric cell and was theoretically interpreted in 1905 in Einstein’s work on light quanta. Hallwachs’ observations laid the foundation for the later development of photo cells, TV camera imaging and other light-sensitive electronic devices.”--Lisa Ann Pinkerton, “Photoelectric Effect Discovery Leads to Photo Cell Development”--Technica Communications.
See also: Harald Goldbeck-Lowe, “The Hallwachs-Effect - The Photoelectric effect - Gate to Quantum Physics “- Poster DIN A0, 2012, Conference: IX. International Conference for the History of Science in Science Education. Project: Roots of Quantum Physics.
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