On measuring the visibility with motor-car headlighting J. B. De BoerD. Vermeulen OriginalPaper Pages: 1 - 32
Coupling of a.c. galvanometer to a.c. amplifier C. Th. J. AlkemadeP. M. Endt OriginalPaper Pages: 46 - 52
On the application of a Philips Ionization Gauge type of ion source in a mass spectrometer leak detector N. Warmoltz OriginalPaper Pages: 61 - 65
Leak detection with a mass spectrometer using hydrogen gas M. E. ReindersJ. SchuttenJ. Kistemaker OriginalPaper Pages: 66 - 70
A system for handling gases without stopcock grease M. E. ReindersJ. Kistemaker Letter to the Editor Pages: 71 - 72
The influence of mutual and self inductances on the accurate determination of capacities A. MichelsC. A. Ten Seldam OriginalPaper Pages: 73 - 76
The calculation of the coefficients of certain asymptotic series by means of linear recurrent relations H. A. Lauwerier OriginalPaper Pages: 77 - 84
On the admissible brightness of lighting fixtures D. VermeulenJ. B. de Boer OriginalPaper Pages: 85 - 107
On the accuracy of measurements of probabilities of delay and of expected times of delay in telecommunication systems L. Kosten OriginalPaper Pages: 108 - 130
A graphical method for solving problems of low-level Photometry W. de Groot OriginalPaper Pages: 131 - 148
Ein Neues, Sehr Einfaches Interferometer Zum Erhalt Ouantitativ Auswertbarer StrÖmungsbilder S. F. Erdmann OriginalPaper Pages: 149 - 198
Design of and measurements with a simple double crystal spectrometer for small angle scattering H. DaamsJ. J. Arlman OriginalPaper Pages: 217 - 226
Determination of ion paths in crossed electric and magnetic fields M. E. ReindersC. J. ZilverschoonJ. Kistemaker OriginalPaper Pages: 264 - 268
A simple combined electrometer charger for radiation protection pocket ionisation chambers A. H. Wapstra OriginalPaper Pages: 269 - 272
An easily degassable ionization gauge with a simple and stable circuit N. WarmoltzE. Bouwmeester OriginalPaper Pages: 273 - 276
Analysis of distortion in pulse-code modulation systems J. P. SchoutenH. W. F. Van Tgroenewout OriginalPaper Pages: 277 - 290
A linear random walk with a partly reflecting partly absorbing barrier H. A. Lauwerier OriginalPaper Pages: 294 - 300
Subharmonic oscillations in electric circuits containing iron-core reactors J. P. SchoutenH. J. Heijn OriginalPaper Pages: 301 - 319
Measurements on thin iron films A. Van ItterbeekL. De GreveF. Heremans OriginalPaper Pages: 320 - 324
Non-iterative numerical solution of boundary-value problems Morton A. Hyman OriginalPaper Pages: 325 - 351
Measurements on the formation of thin tin films A. Van ItterbeekL. De GreveF. Heremans OriginalPaper Pages: 352 - 360
On the accuracy of measurements of probabilities of delay and of expected times of delay in telecommunication systems L. kosten OriginalPaper Pages: 401 - 415
The derivation of paraxial constants of electron lenses from an integral equation H. Bremmer OriginalPaper Pages: 416 - 428
Catadioptric microscope objectives with concentric mirrors B. S. BlaisseA. BouwersH. W. Bulthuis OriginalPaper Pages: 453 - 466