Zobrazeno 1 - 10
of 47
pro vyhledávání: '"A.A. Kruithof"'
Autor:
L.S. Ornstein, A.A. Kruithof
Publikováno v:
Physica. 2:611-622
Summary The excitation-functions of a singuletline and a tripletline of the Hydrogenmolecule have been measured. In the experimental method a narrow beam of electrons and a F a r a d a y-cage are used. The electrons are accelerated by a grid at high
Autor:
A.A. Kruithof
Publikováno v:
Physica. 7:519-540
Resume Le coefficient d'ionisation des electrons η = α/E ( E = champ e lectrique uniforme en V/cm ) a ete determine pour le crypton et pour le xenon. Les resultats, joints a ceux deja publies, des mesures effectuees sur le neon et sur l'argon, prou
Autor:
A.A. Kruithof, P.J. Bouma
Publikováno v:
Physica. 10:36-46
As the new hue estimation experiments described in a previous article 1) show a very poor agreement with former theories, a new representation of the experimental results, which is based on the theory of projective pencils of lines is given. In the f
Autor:
A.A. Kruithof, F.M. Penning
Publikováno v:
Physica. 2:793-804
Summary In vacuum photocells the current from the cathode (K) may amplified about 7 × by secondary emission from a third electrode (B) of th same material as the cathode. For the coefficient of secondary emission (δ) values up to 9 were found; ther
Autor:
F.M. Penning, A.A. Kruithof
Publikováno v:
Physica. 3:515-533
Resume Un nouveau type d'appareil a ete construit pour la determination du coefficient d'ionisation α. La construction est telle que l'appareil entier peut etre evacue a une temperature elevee. Le mecanisme servant a deplacer la cathode se trouve a
Autor:
D. van Houwelingen, A.A. Kruithof
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 11:1235-1243
The transition probabilities of four lines of singly ionized argon have been determined from radiance measurements of spectral lines emitted by an argon-arc discharge in a sealed tube. The wavelengths of the lines are λ = 4348, 4806, 4847, and 4879
Autor:
M. Koedam, A.A. Kruithof
Publikováno v:
Physica. 28:80-100
Resume La transmission d'une decharge de mercure-argon a basse pression pour les lignes du triplet de mercure visible peut donner des informations sur la concentration de differences de niveau d'energie de 63P regnant dans la decharge. En calculant l
Publikováno v:
Physica. 29:565-584
Synopsis L’energie dissipee dans la colonne positive d’une decharge de mercure-argon a basse pression, comme celle-ci est appliquee aux tubes fluorescentes, est delivree a l’environnement sous trois formes: l’energie de rayonnement, les perte
Autor:
A.A. Kruithof, P.J. Bouma
Publikováno v:
Physica. 9:957-966
Summary New hue estimation experiments have been performed for incandescent light and daylight. In every series of observations one kind of light was used, to which the eye of the observer was allowed to adapt fully. The results have been compared wi
Autor:
M.J. Druyvesteyn, A.A. Kruithof
Publikováno v:
Physica. 4:450-463
Resume Le coefficient d'ionisation a de Townsend pour des melanges de neon et d'argon permet de calculer la probabilite ϰ qu'un atome de neon excite produit pendant sa vie un ion d'argon. Ce calcul est fait a 2 manieres differentes: a) partant de la