Results 271 to 280 of about 18,082,934 (332)
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Rate measurement of the oxygen atom-hydrogen atom reaction.
1965Schiff, H. (Supervisor)
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Atomic radiation rates in photonic crystals
Physical Review B, 2001A photonic crystal, defined as a periodic dielectric structure, can influence the radiation rate of an embedded dipolar emitter. A theory of this effect is developed and the efficiency of a dipolar photonic source is calculated for a realistic three-dimensional crystal.
Lousse, Virginie +3 more
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IEEE Transactions on Industrial Informatics, 2020
Nanofluid/ultrasonic atomization minimal quantity lubrication (MQL) was used in an SKD11 steel micromilling process with ultrasonic dispersion. The nanofluid atomizer substantially improved nanofluid reunification and delivery to the cutting zone.
Weitai Huang +4 more
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Nanofluid/ultrasonic atomization minimal quantity lubrication (MQL) was used in an SKD11 steel micromilling process with ultrasonic dispersion. The nanofluid atomizer substantially improved nanofluid reunification and delivery to the cutting zone.
Weitai Huang +4 more
semanticscholar +1 more source
Effect of hot gas atomization on spray forming of steel tubes using a close-coupled atomizer (CCA)
, 2020Hot gas atomization in spray forming has been used for the first time to improve the quality of spray-formed tubular deposits. This technique reduces gas consumption and produces smaller droplets than cold gas atomization. The flight velocity and cooling
S. Hussain +4 more
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Rate of addition of bromine atoms to ethylene
Canadian Journal of Chemistry, 1970The rate of combination of bromine atoms in the photosensitized hydrobromination of ethylene has been determined by the rotating sector technique. From this and kinetic data reported previously the rate constant for the addition of bromine atoms to ethylene in the presence of 380 Torr of propane as deactivating gas has been calculated to be 1.5 ± 0.3 ×
K. T. Wong, D. A. Armstrong
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Investigation on the design of atomization device for coal dust suppression in underground roadways
Chemical engineering research & design, 2019During mining operations, large amounts of coal dust escape from the heading faces. This dust presents a serious hazard to the health and safety of workers in the excavation roadways.
Sheng-Yong Hu +6 more
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The rate of spontaneous decay of a moving atom
Journal of Physics B: Atomic, Molecular and Optical Physics, 2003We show how the physical processes responsible for the spontaneous decay of a dipole atom conspire to guarantee that the spontaneous decay rate of the atom transforms between different inertial reference frames exactly as required by time dilation. The method employed makes use of familiar basic properties of Maxwell's equations and special relativity.
James D Cresser, Stephen M Barnett
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Decay Rate of an Excited Atom in a Moving Medium
Physical Review Letters, 2005The effect of a uniformly moving medium on the decay rate of an excited atom is calculated. When the local field effects are neglected, the free space decay rate is modified by a factor which is a complicated function of refractive index, permeability, and velocity of the medium.
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Historical Note on the Rate of a Moving Atomic Clock
Journal of the Optical Society of America, 1947The history of the idea of variation of frequency with velocity is followed through Voigt, Larmor, Lorentz, and Einstein. The Michelson-Morley experiment is explainable by any contraction of dimensions in the ratio (1−υ2/c2)12:1 along and transverse to the direction of motion. To each contraction corresponds a different value of frequency change.
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