Results 181 to 190 of about 755,848 (216)
Some of the next articles are maybe not open access.
Il Nuovo Cimento B Series 11, 1971
The usual expression for the gravitational red-shiftz is calculated exactly in both the standard and isotropic forms of the Schwarzschild metric. The differing results are found to be meaningless and metric dependent until they are put in terms of quantities directly observable from Earth.
openaire +1 more source
The usual expression for the gravitational red-shiftz is calculated exactly in both the standard and isotropic forms of the Schwarzschild metric. The differing results are found to be meaningless and metric dependent until they are put in terms of quantities directly observable from Earth.
openaire +1 more source
Mössbauer null red-shift experiment
Physical Review D, 1988A gravitational null red-shift experiment has been carried out using the M\"ossbauer effect to compare the red-shift between two states of $^{57}\mathrm{Fe}$ in different chemical environments. An upper bound of 3.5\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}5}$ has been found for the relative difference in red-shift, in agreement ...
, Vucetich +5 more
openaire +2 more sources
Il Nuovo Cimento, 1962
The space-time metric is derived by following the classical treatment in which the universe is regarded as a static continuous fluid of densityϱ and pressurep. It was necessary to make the assumption thatp+c2ϱ=0 so that the effects of a finite density could be considered.
openaire +2 more sources
The space-time metric is derived by following the classical treatment in which the universe is regarded as a static continuous fluid of densityϱ and pressurep. It was necessary to make the assumption thatp+c2ϱ=0 so that the effects of a finite density could be considered.
openaire +2 more sources
1981
The discovery of emission and absorption of γ rays free of thermal Doppler broadening and the effects of recoil by R.L. MOSSBAUER [3.1] brought to experimental physics a tool that has been used to detect fractional changes of electromagnetic energy smaller than can be detected by any other technique.
openaire +1 more source
The discovery of emission and absorption of γ rays free of thermal Doppler broadening and the effects of recoil by R.L. MOSSBAUER [3.1] brought to experimental physics a tool that has been used to detect fractional changes of electromagnetic energy smaller than can be detected by any other technique.
openaire +1 more source
Astrophysics and Space Science, 1970
The paper is an extension of this author's hypothesis, presented inAstrophys. Space Sci.3 (1969), 268, which explains the red shift in terms of a geometry of static space and stationary observers. The author introduces here the notions of ‘metric with an observer’, ‘observed distance’ and ‘space of observations’; he considers the problem of the ...
openaire +1 more source
The paper is an extension of this author's hypothesis, presented inAstrophys. Space Sci.3 (1969), 268, which explains the red shift in terms of a geometry of static space and stationary observers. The author introduces here the notions of ‘metric with an observer’, ‘observed distance’ and ‘space of observations’; he considers the problem of the ...
openaire +1 more source
Science, 2004
ECOLOGY/EVOLUTION Evolution is a process that manifests itself at every level of biological organization, from molecule to population. However, it is rare that it can be observed and measured at all these levels simultaneously to provide an unbroken chain of cause and effect. Stolz et al.
openaire +1 more source
ECOLOGY/EVOLUTION Evolution is a process that manifests itself at every level of biological organization, from molecule to population. However, it is rare that it can be observed and measured at all these levels simultaneously to provide an unbroken chain of cause and effect. Stolz et al.
openaire +1 more source
Solar Physics, 1971
The Freundlich red shift of wavelengths in the solar spectrum is discussed. Born's approach on the photon-photon interaction is used in conjunction with Melvin's recalculation of Freundlich's universal constant in order to derive the cross-section for scattering in the solar atmosphere. The new cross-section appears to be 〈σ⊙〉 = 1.58 × 10−18 cm2, which
openaire +1 more source
The Freundlich red shift of wavelengths in the solar spectrum is discussed. Born's approach on the photon-photon interaction is used in conjunction with Melvin's recalculation of Freundlich's universal constant in order to derive the cross-section for scattering in the solar atmosphere. The new cross-section appears to be 〈σ⊙〉 = 1.58 × 10−18 cm2, which
openaire +1 more source

