Philips Laboratories

This is by way of preliminary to an outline account of the genesis of the magnetic ferrites in the Philips Laboratory, before, during and just after World War ll. The presiding spirit was Jacobus Louis Snoek (1902-1950), a Dutch physicist whom we... 

Lodestone, also known as magnetite, was one of the first known magnetic materials. Its ability to attract iron was known as far back as 600 B.C., and it was used in compasses beginning in the thirteenth century. It was studies by I. L. Snoeck at the Philips Laboratories in Holland in the 1940s, however, that led to the first application of oxide ceramics with strong magnetic properties. 

K. Kosai,1 Philips Laboratories, Briarcliff Manor, New York 10510 (1)... 

Kneizys F.. Abteu, L., Anderson, Chetwynd, J.. Shettle, E Berk. A.. Bernstein, L., Robertson. D., Acharya, P Rothman, L.. Selby, J Gallery. W., Clough, S. (1996) The MODTRAN 2/3 Report and LOWTRAN 7 MODEL. Philips Laboratory, Geophysics Directorate. 

The classic 1948 Verwey-Overbeek text is well worth studying even today. E. J. W. Verwey and J. Th. G. Overbeek, Theory of the Stability ofLyophobic Colloids (Dover, Mineola, NY, 1999 originally published by Elsevier, New York, 1948). In 1967 Verwey told me that their studies were done in secret while Nazi soldiers controlled the Philips Laboratories where he and Overbeek pretended to do assigned work. Because they could publish nothing during the war, the world was eventually blessed with a coherent monograph that has defined much of colloid research ever since. This text is especially valuable for its sensitive, systematic treatment of electrostatic double layers. 

N. J. HARRICK (Philips Laboratory) Does the product of the concentration of holes and electrons remain constant as one goes through the space charge region to the surface ... 

Acknowledgements The X-ray spectrum shown in Fig. 28 was obtained during a series of tests undertaken together with Dr. Hagemann at the Philips laboratory in Eindhoven. The particular specimen shown is a polystyrene/polybromostyrene blend obtained from Professor Strobl, University of Mainz. The Raman and density measurements were performed in the laboratory of Professor Mandelkern in Tallahassee. 

The four-electrode method with double immersion for conductivity measurements was published by Ohta et al. (1981). It was derived from the four-electrode method used for the measurement of conductivity of the semiconductors originally developed at the Philips laboratories. The schematic drawing of the method s principle is shown in Figure 8.12. The method demands a square orientation of the electrodes. Electrical shifting of the electrodes function by 90 eliminates the deviation of the electrodes position from this geometry. The principle of the method, which is based on the measurement of electrical field distribution in the investigated liquid, is as follows ... 

Air Force Research Laboratory Philips Laboratory 29 Randolph Rd. 

The alloys were prepared by arc melting (at Philips Laboratory of Physics) and annealed in argon for 100 hours at 1000°C. Using a diamond watering blade, samples were cut into 1 mm thick slices. The diameter of the slices was 12 mm. Subsequently the samples were ground and polished to 1 p, diamond paste. The oxidation experiments were performed at 1000°C in pure oxygen, which had been dried and purified with P2Os and molsieve A4. 

Philips Laboratory in Eindhoven has examined self-assembled monolayers of aliphatic thiols on gold. Microscopic observations revealed apparent holes in the coatings fabricated. Under higher resolution with the STM probe, the holes are really domains with a different 2-dimensional structure (36). 

Ev2 Evans jr., H.T. Technical Report No. 54, Research Lab., Philips Laboratories, Irvington-on-Hudson, N.Y., 1952, 1-33. 

Such gas effects have to be considered in the electric lamp industry and in the case of semiconductors which are now used in numerous devices susceptible to corrosion. Sparney and Ruler of the Philips laboratories in Eindhoven recently published a paper on this subject, describing a new method of studying the surface electrical properties of semiconductors. The method depends on conducting resistivity measurements for pressures of... 

Hugo Christiaan Hamaker, 1905-1993, Dutch scientist at the Philips Laboratories and professor in Eindhoven. 

This work was supported by grants from INSALUD, Comision Asesora de Investigacion, Ministerio de Industrie and philips Laboratories. ... 

Drinker, Philip. Laboratories of Ventilation and Illumination, Harvard School of Public Health, Boston. Journal of Industrial Hygjene 6, no. i (1924) 57-66. 

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