منابع مشابه
The Abiotic Action of Ultra-violet Light
Typhoid bacilli are about one two-hundredth as sensitive to ultraviolet light of wave-lengths 2100 to 2800 Angström units as is the photographic plate. This sensitivity then falls off, decreasing rapidly to almost zero sensitivity at about 2970, the beginning of the sun's spectrum.
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Ultra-violet absorption cross sections of isotopically substituted nitrous oxide species: NNO, NNO, NNO and NNO P. von Hessberg, J. Kaiser , M. B. Enghoff, C. A. McLinden, S. L. Sorensen, T. Röckmann, and M. S. Johnson Department of Chemistry, University of Copenhagen, Copenhagen, Denmark Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division, Heidelberg, Germany now at: Departm...
متن کاملUltra-violet Finite Noncommutative Theories
We establish the ultraviolet finiteness of various classes of noncommutative gauge theories.
متن کاملA Study of the Bactericidal Action of Ultra Violet Light
1. Wide differences in the intensity of incident ultra violet energy are not accurately compensated by corresponding changes in the exposure time, so that the Bunsen-Roscoe reciprocity law does not hold, strictly, especially for bactericidal action on young, metabolically and genetically active bacteria. In the present series of experiments, however, the energies used at various wave lengths di...
متن کاملUltra-Violet Behavior of Bosonic Quantum Membranes
We treat the action for a bosonic membrane as a sigma model, and then compute quantum corrections by integrating out higher membrane modes. As in string theory, where the equations of motion of Einstein’s theory emerges by setting β = 0, we find that, with certain assumptions, we can recover the equations of motion for the background fields, i.e. Rμν +(1/4)FμαβγμF αβγ ν = 0 and DFαβγ = 0. for t...
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ژورنال
عنوان ژورنال: Nature
سال: 1961
ISSN: 0028-0836,1476-4687
DOI: 10.1038/191107a0