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 the grounds that global warfare I, the Natuurkundig Laboratorium has been an important middle of business learn for Philips, one of many world’s biggest electronics businesses. during this learn, Marc J. de Vries demonstrates how the background of the laboratory can assist us comprehend vital alterations within the creation and makes use of of know-how within the 20th century. Breaking their examine into 3 classes, every one characterised by means of diversified learn targets and techniques, the authors increase this normal background with designated case experiences. the end result might be of price to a person learning the historical past and philosophy of know-how.

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Read Online or Download 80 Years of Research at the Philips Natuurkundig Laboratorium (1914-1994): The Role of the Nat. Lab. at Philips PDF

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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

Example text

Was represented in this committee. 5. During this period, the climate for scientific labs was generally positive. Not only industries but also the government recognised the importance of scientific research. In 1930 the TNO organisation for Applied Scientific Research (Toegepast Natuurwetenschappelijk Onderzoek) was set up by the government. Lab. Lab Goal In the early 1920s the Philips company experienced enormous growth. The product portfolio extended from light bulbs to radios and many other products.

19 Apart from having positive feedback, there was also the concept of negative feedback, in which case part of the amplifier output was fed back to the input signal, but in an opposing phase. This reduced the influence of undesirable fluctuations in the signal due to variations in for instance the supply voltages. J. Zaalberg van Zelst later implemented the results in real amplifiers. 20 Another electrical circuit was needed for tuning. The first radio sets brought out by the company in 1927 were of the ‘tuned radio frequency’ type.

Lab. F. C. 38 Hardenberg’s work was already linked to Miller’s invention. This new Miller technology combined mechanical and optical ways of recording sound. Philips became interested in this system, because it maintained that it would open up the possibility to secure a better position within the market. 39 The Miller system was a real innovation: a wedgeshaped stylus wrote a signal in an opaque layer on a strip of transparent film. The way in which the signal was reproduced was similar to the way in which a sound film was reproduced (with a lamp and a photocell).

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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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