Results 281 to 290 of about 661,224 (311)

Flash grab effect within the regions of modal and amodal completions. [PDF]

open access: yesJ Vis
Nakada H   +5 more
europepmc   +1 more source

A Red-Shifted Chlorophyll

Science, 2010
Chlorophyll Sees Red Among the first facts students learn about the natural world is that plants owe their green color to the pigment chlorophyll. There have actually been a handful of slightly different chlorophyll variants uncovered over the years, and Chen et al.
Martin Schliep   +6 more
openaire   +3 more sources

Quasar red shifts [PDF]

open access: possibleInternational Journal of Theoretical Physics, 1969
The results of techniques developed in earlier papers are used in a discussion of the quasar red shifts. An expression with the form of a kinetic energy arises in relation to the probability distribution of red shifts. Agreement with the Hoyle & Burbridge (1966) red shift data at the time of writing is statistically significant, the correlation ...
openaire   +1 more source

The Red Shift

JAMA: The Journal of the American Medical Association, 1982
The Five-Day Retirement Sam Farber lived for 70 years in the Midwest. Once he had tried to retire to Florida, but the retirement lasted for only five days. He got home just in time for the first big snowstorm of the winter. Perhaps it was the lifelong habit of working at his furniture business that brought him back, but even when he returned he was ...
openaire   +2 more sources

Gravitational red-shift

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   +2 more sources

On the Freundlich red shift

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   +2 more sources

Red Shift in the Anagalactic Nebulæ [PDF]

open access: possibleNature, 1945
MR. A. J. Shneiderov, in his letter1 putting forward an explanation of the 'red shift', appears to have overlooked, in examining the effect of gravitational attraction on the frequency of a photon, the fact that the nebula from which the photon originated would exert a contrary effect on the photon to that exerted by the galaxy.
openaire   +3 more sources

A Red-Shifted Beetle

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   +2 more sources

The nature of the red-shift

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

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