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Afdeling gezondheidstechniek TNO (author), van Stekelenburg, L.H.M. (author)
report 1951
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Poley, J.P. (author), Physisch Laboratorium RVO-TNO (author)
Waar door het watergeweld der overstroming vrijwel alle telefoonverbindingen op het eiland reeds direct werden verbroken en vanuit Middelharnis via een overgebleven lijn slechts gebrekkig contact met het vasteland kon worden onderhouden, werden reeds op zondag 1 Februari door de Burgemeester van Middelharnis, de heer D. Rijnders, bij...
bookPart 1954
document
Physisch Laboratorium RVO-TNO (author), de Loor, G.P. (author)
doctoral thesis 1956
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Physisch laboratorium RVO-TNO (author), Poley, J.P. (author)
Attention is drawn to the fact that the power which can be generated by various electromagnetic radiation sources show a remarkable minimum at frequencies between the long wave infrared and the microwaves. This observed power restriction appears to be of physical nature. This frequency region contains the resonance frequencies of the simplest...
article 1956
document
Centraal Laboratorium TNO (author), Janeschitz-Kriegl, H. (author)
In order to avoid the thermal perturbation of flow birefringence measurements a modified Couette-apparatus was developed. In the usual apparatus the heat of friction generated in the liquid is removed by thermal conduction through the cylinder walls. As discussed by Björnsthl8) a stationary distribution of temperature is established showing a...
article 1956
document
Brinkman, H.C. (author), Centraal Laboratorium TNO (author)
Kramer's general theory of Brownian motion 1) based on a diffusion equation in phase space is discussed from the standpoint of statistical thermodynamics. It is concluded that for particles moving in a medium in equilibrium the restrictions imposed by the second law of thermodynamics limit Kramer's diffusion equation to a slight generalisation...
article 1957
document
Nederveen, C.J. (author), Centraal laboratorium TNO (author)
article 1964
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Centraal Laboratorium TNO (author), Nederveen, C.J. (author), Schwarzl, F.R. (author)
Different correction formulae for the influence of shear and rotatory inertia on flexural vibrations of freely supported beams are compared with the exact solution. It appears that in most cases a simple formula is sufficient because of the appearance of a constant which is not accurately known, viz. the shear deflection coefficient.
article 1964
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van Batenburg, M.W. (author), Physisch laboratorium RVO-TNO (author)
A survey is given on differences and similarities between SONAR and RADAR as far as the characteristics, including those of the medium, are concerned. On active SONAR equipment a short historical survey is given together with a description of older and newer designs. Finally some examples are given on special techniques of using SONAR equipment...
article 1966
document
Looyenga, H. (author), Centraal laboratorium TNO (author)
It is shown that MO theory predicts the butadiene molecule to be flat, and that VB theory predicts a skewed configuration of this molecule. The calculations of the resonance energy of conjugated systems, using either VB or MO theory, are discussed and compared. Benzede is taken as an example. Emphasis is laid on the requirement of similarity...
article 1966
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Physisch laboratorium RVO-TNO (author), Boden, J.A. (author)
conference paper 1970
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van der Spek, G.A. (author), TNO Fysisch en Elektronisch Laboratorium (author)
The influence of increasing range resolution on the detectability of targets with dimensions greater than the resolution cell is studied. An N-cell target model is assumed, which contains k reflecting cells, each reflecting independently according to the same Rayleigh amplitude distribution. It will be referred to as the (N,k) target. Detection...
article 1971
document
Bakker, T. (author), Physisch laboratorium RVO-TNO (author)
Door bestraling met een intense lichtbron van een staaf geschikt materiaal kan men dit materiaal zodanig activeren, dat laserwerking kan optreden. De opbouw van een dergelijke vaste-stof laser is in figuur 1 geschetst. De door de lichtbron P uitgezonden straling wordt door een reflector R in de laserstaaf L geconcentreerd. De hoogreflecterence...
conference paper 1972
document
Möhring, F. (author), Sevat, P.A.A. (author), Physisch laboratorium RVO-TNO (author)
Protection against the effects of the nuclear electromagnetic pulse. A nuclear explosion generates a short impulsive electromagnetic field which propagates over the earth radially from the point of explosion. In the explosion zone the electric and magnetic fieldstrengths are high and may damage cables and electronic equipment. The phenomenon is...
article 1972
document
van der Spek, G.A. (author), Physisch Laboratorium TNO (author)
Measurements have been carried out to compare a sequential two-pulse detection scheme with conventional single-pulse detection. Measured and computed results are in good agreement.
conference paper 1972
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Lamberts, C.W. (author), Physisch laboratorium RVO-TNO (author)
Gaslasers worden veelvuldig gebruikt bij experimenten, waarbij hoge eisen aan de coherentie-eigenschappen van de lichtbron gesteld worden. Wanneer echter een uitgezonden vermogen van enkele mW noodzakelijk is, dan is werking in meerdere longitudinale modes onvermijdelijk. Het optreden van meerdere longitudinale modes betekent zowel een erstige...
conference paper 1972
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Centraal technisch instituut TNO Afdeling Stromingstechniek (author), NO CTI (author)
other 1973
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Boden, J.A. (author), Physisch laboratorium TNO (author)
A survey is given of the most common types of coherent optical correlators, which are classified as spatial plane correlators, frequency plane correlators and special reference correlators. Only the spatial plane correlators are dealt with rather thoroughly. Basic principles, some special features, advantages and disadvantages mostly are given...
bookPart 1974
document
Dekker, H. (author)
Koöperatíeve verschijnselen kunnen optreden in systemen die opgebouwd zíjn uít zeer vele met elkaar wisselwerkende subsystemen. Voor de 'míkroscopische' subsystemen kan men bijvoorbeeld denken aan menselijke individuen, hun hersencellen, of aan atomen. Het samengestelde, 'makroskopische' systeem kan dan respektievelijk de maatschappíj, de...
article 1976
document
van der Graaf, F. (author), Technisch Physische Dienst TNO - TH (author)
article 1979
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