Download e-book for kindle: 80 Years of Research at the Philips Natuurkundig by Marc J. de Vries, Marc J. Vries

By Marc J. de Vries, Marc J. Vries

ISBN-10: 1423785398

ISBN-13: 9781423785392

ISBN-10: 9085550513

ISBN-13: 9789085550518

On account that global battle I, the Natuurkundig Laboratorium has been an important heart of business learn for Philips, one of many world’s greatest electronics businesses. during this learn, Marc J. de Vries demonstrates how the historical past of the laboratory may also help us comprehend very important adjustments within the construction and makes use of of expertise within the 20th century. Breaking their research into 3 sessions, every one characterised via assorted learn targets and techniques, the authors increase this common background with distinct case reviews. the end result could be of worth to someone learning the historical past and philosophy of expertise.

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Extra info for 80 Years of Research at the Philips Natuurkundig Laboratorium (1914-1994): The Role of the Nat. Lab. at Philips

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Loudspeaker detector af amp. 1000 kHz superheterodyne aerial rf amp. mixer 1000 kHz i-f amp. detector 456 kHz local oscillator af amp. loudspeaker Figure 4. Comparison of the tuned radio frequency (straight) radio receiver and the super-heterodyne (super-het). The super-het uses a fixed intermediate frequency (usually around 460 kHz) for the stages providing most of the amplification. This eliminates most of the problems of tracking tuneable circuits and allows band-pass circuits to be used (from Garratt 1976, Vol.

64 From a drawing produced in 1916 we know that the lab did not occupy many rooms: there were five rooms for the scientists and an office for Dr. 65 It is evident that even though small extensions had been made, the situation was insufficient to serve the needs of the number of people working in the lab. Besides that, Holst had expressed the need for a vibration-free room for experiments, which was not available in the old building. Lab. management (Holst and Oosterhuis) in which new lab facilities were proposed.

Colloquia was not unique. , and perhaps the visits made by world-famous colleagues were partly due to his intervention. In the period between WWI and WWII, the discipline of physics flourished in the Netherlands in terms of participation. D. van der Waals, H. A. Lorentz, P. H. van ’t Hoff. Lab. was important for attracting their attention to the industrial laboratory, which was seen as a new, interesting option for a serious scientific career. At this time, serious contributions to the discipline as a whole were being made in the Netherlands.

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80 Years of Research at the Philips Natuurkundig Laboratorium (1914-1994): The Role of the Nat. Lab. at Philips by Marc J. de Vries, Marc J. Vries

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