Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Helmut Hess"'
Autor:
Helmut Hess
Publikováno v:
NICHTS NEUES SCHAFFEN
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62baee7f0a71e975e6a7ef959fa4d3e1
https://doi.org/10.1515/9783110431148-010
https://doi.org/10.1515/9783110431148-010
Autor:
Klaus-Dieter Weltmann, Helmut Hess
Publikováno v:
Vakuum in Forschung und Praxis. 19:16-20
Plasma light sources can at present fulfill all the demands of general lighting with high efficiency. A further increase of the luminous efficacy and a high flexibility concerning the color temperature with simultaneous substitution of mercury as a f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d12303517efa4ddd33f5b4d2212eda7
https://doi.org/10.1002/vipr.200790036
https://doi.org/10.1002/vipr.200790036
Autor:
Oliver Langenscheidt, Ralf Methling, Steffen Franke, Heinz Schoepp, Hartmut Schneidenbach, Helmut Hess
Publikováno v:
LEUKOS. 3:217-227
High-intensity discharge lamps (HID lamps) cover a wide range of applications. However, HID lamps contain mercury. For lower environmental pollution mercury-free HID lamps are under investigation. This article reports experimental results substitutin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0cabade83010d7f6210a4274c44308d
https://doi.org/10.1582/leukos.2007.03.03.004
https://doi.org/10.1582/leukos.2007.03.03.004
Publikováno v:
Physica Scripta. 66:89-93
As is confirmed experimentally, the liquid-gas critical points of heavy alkali metals attached to the percolation threshold of electron shells obey to a scaling with the atom ionization potential. For light alkali metals, a cell model which yields a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eeb8c4948fa99c16f7e275dfddd1aae9
https://doi.org/10.1238/physica.regular.066a00089
https://doi.org/10.1238/physica.regular.066a00089
Publikováno v:
Physics and Chemistry of Liquids. 37:719-733
For most metals the two phases of the liquid-gas transition are metallic in a region around the critical point. A method for determining the critical data of expanded liquid metals under such conditions has been published recently. Mercury, however,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb47c75d926e65c194321214716b98a8
https://doi.org/10.1080/00319109908035950
https://doi.org/10.1080/00319109908035950
Publikováno v:
High Temperatures-High Pressures. 29:215-219
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbe90c3b0aa7266c590003d1aac36f34
https://doi.org/10.1068/htec105
https://doi.org/10.1068/htec105
Autor:
Helmut Hess, Hartmut Schneidenbach
Publikováno v:
International Journal of Materials Research. 87:979-984
A method recently proposed for the calculation of critical data of metals has been applied to transition metals. Although there is no uniform behaviour when the calculated data are compared with earlier estimations, reasonable data sets have been obt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c3a92dd2c060a003b7196a1a104ac5a
https://doi.org/10.1515/ijmr-1996-871209
https://doi.org/10.1515/ijmr-1996-871209
Autor:
Helmut Hess
Publikováno v:
International Journal of Materials Research. 86:240-244
The combination of a vapour pressure equation with equation of state data assuming only Coulomb interaction in the attractive term gives couples of critical data (p{sub c}, T{sub c}) for the alkali metals, which are in good agreement with experimenta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46490240a3adc5fe3543211ef0646ce7
https://doi.org/10.1515/ijmr-1995-860404
https://doi.org/10.1515/ijmr-1995-860404