Zobrazeno 1 - 10
of 35
pro vyhledávání: '"E.F.M. Van Der Held"'
Autor:
E.F.M. Van Der Held, H.J. van den Bold
Publikováno v:
Physica. 15:305-315
The transport of heat in a vertical hydrogen flame, in which the molecules are dissociated by an electric arc, has been calculated for the following cases: 1. 1. Fluctuating heat production concentrated in one point. 2. 2. Fluctuating heat production
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea4de40c0a36d19f999f96c2baec0680
https://doi.org/10.1016/0031-8914(49)90106-8
https://doi.org/10.1016/0031-8914(49)90106-8
Autor:
E.F.M. Van Der Held, H.P. Reindl
Publikováno v:
Physica. 6:997-1008
The reaction-velocity of hydrogen and oxygen at the surface of platinum in dependence on both gases was determined by measuring the change of pressure of the combustible gas. From the formula for the reaction-velocity could be inferred the way in whi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8536556af761da62eef8c4c63cba2251
https://doi.org/10.1016/s0031-8914(39)90100-x
https://doi.org/10.1016/s0031-8914(39)90100-x
Autor:
E.F.M. van der Held
Publikováno v:
Chemical Engineering Science. 14:300-312
This research is divided into two parts: the first one investigates the case that at the surface the CO2-pressure is extremely small (temperature higher than 1100 °C) and the second part the case that at the surface the CO2-pressure is moderate and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f78b9bc88399c0ea6a11163ec488ef98
https://doi.org/10.1016/0009-2509(61)85091-4
https://doi.org/10.1016/0009-2509(61)85091-4
Autor:
E.F.M. Van Der Held
Publikováno v:
Physica. 2:943-951
Summary A mathematical solution is given of some thermotechnical problems, which deal with the cooling down or heating up of composed walls, consisting of parallel layers of different materials whether or not divided by air. Particularly the changing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac36d219c042aa108ccd1d89ea489099
https://doi.org/10.1016/s0031-8914(35)90180-x
https://doi.org/10.1016/s0031-8914(35)90180-x
Autor:
M. Minnaert, E.F.M. Van Der Held
Publikováno v:
Physica. 2:769-784
Summary The importance is emphasized of measurements of the angular distribution of light, belonging to diffusing glasses of different kinds. Systematical measurings of this distribution were carried out for several pieces of opal glass, illuminated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd19c27a8a950e850e8838d5599ef703
https://doi.org/10.1016/s0031-8914(35)90156-2
https://doi.org/10.1016/s0031-8914(35)90156-2
Autor:
von E.F.M. van der Held
Publikováno v:
Physica. 1:1153-1160
Zusammenfassung Es wird eine neue Theorie fur die hemmende Wirkung von Luft auf die Kondensation von Wasserdampf gegeben und an Messungen von Othmer und Langen gepruft. Es wird angenommen, dass die hemmende Wirkung durch den Diffusionswiderstand eine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::819b70bf5118b60cd89dd62dc139aa6f
https://doi.org/10.1016/s0031-8914(34)80313-8
https://doi.org/10.1016/s0031-8914(34)80313-8
Autor:
E.F.M. Van Der Held
Publikováno v:
Symposium (International) on Combustion. 7:554-558
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcccecd6550ba18ee7438ad068a67a12
https://doi.org/10.1016/s0082-0784(58)80091-0
https://doi.org/10.1016/s0082-0784(58)80091-0
Autor:
E.F.M. Van Der Held
Publikováno v:
Physica. 8:196-208
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eee08bcd6a8da57402dea43ec41d0283
https://doi.org/10.1016/s0031-8914(41)90043-5
https://doi.org/10.1016/s0031-8914(41)90043-5
Autor:
E.F.M. Van Der Held, M. Miesowicz
Publikováno v:
Physica. 4:559-578
Summary The diffusion coefficient of Sodium in Nitrogen is measured at room temperature. The sodium is made visible by means of condensed discharges at a pressure of 1 mm Hg in a tube, in which the sodiumvapour is diffused against a stream of nitroge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98b41c3772e652d2a0942ed31f2e8cf3
https://doi.org/10.1016/s0031-8914(37)80100-7
https://doi.org/10.1016/s0031-8914(37)80100-7
Autor:
J.H. Heierman, von E.F.M. van der Held
Publikováno v:
Physica. 3:31-41
Summary The absolute transition-probabilities of the resonance-lines are determinedby measuring the absolute intensity of the light emitted by potassium atoms in an acetylene-airflame, the determination of the flame-temperature (line-reversal method)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::262faf3f335dc29a68d98a77d7239ae8
https://doi.org/10.1016/s0031-8914(36)80205-5
https://doi.org/10.1016/s0031-8914(36)80205-5