Results 111 to 120 of about 6,368 (219)

Features of Earth’s lower ionosphere during solar eclipse and sunset and sunrise hours according to measurements by the API method near Nizhny Novgorod

Solar-Terrestrial Physics
We present the results of experimental studies into the response of Earth’s lower ionosphere to a partial solar eclipse. The studies have been carried out using the method of resonant scattering of radio waves by artificial periodic irregularities (APIs)
Bahmetieva N. V., Grigoriev G. I., Zhemyakov I. N., Kalinina E. E., Lisov A. A.   +4 more
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Nonrelativistic Approximation for Quasi-Planes Wave of a Spin 1 Particle in Lobachevsky Space

, 2013
Spin 1 particle in Pauli approximation is investigated on the background of a curved space of constant negative curvature, Lobachevsky space. Nonrelativistic approximation is performed in the system of 10 equations resulted from separating the variables
Kazmerchuk, K. V., Ovsiyuk, E. M.
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A Quantum-Mechanical Particle in a Cornell-Type Potential in Lobachevsky Space

In a Friedmann-Lobachevsky space-time with a radius of curvature slowly varying i time, we study numerically a problem of motion of a scalar particle moving in Cornelltype potentials.
Kurochkin, Yu. A., Jenkovszky, L. L., Shaikovskaya, N. D., Soloviev, V. O.   +3 more
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Spectral characteristics of laplace-beltrami operators in lobachevsky spaces

, 1992
A discrete spectrum of Laplace operators on fundamental areas of discrete groups of Lobachevsky space motions is being studied. A formula of Selberg dseta-function have been studied, an asymptotic formula for the spectrum of Dirichlet's problem in ...
Parnovsky Leonid Borisovich
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Lobachevsky's Views of Geometry

102 pages, 2 ...
openaire   +2 more sources

THE EXPERIMENTAL SPECIFYING OF THE DIRECTION OF THE RESULTANTS OF RESISTANCE, INFLUENCING THE SUCKED SEED IN THE VACUUM SOWING APPARATUS

Advanced Engineering Research, 2008
The method and the results of the experimental investigation is expounded, which allow to set the direction of the resultants of resistance, influencing the seed, caught by the sucking hole of the vacuum sowing apparatus of the exact drill.
A. NESMIYAN, P. LOBACHEVSKY, V. KHIZHNYAK   +2 more
doaj  

Fine Structure of the Atomic Hydrogen Spectrum in the Lobachevsky Space

Solutions of the radial Dirac equation for a particle with spin 1/2 moving in the Coulomb field in the Lobachevsky space are presented in the form of power series.
Kurochkin, Yu. A., Otchik, V. S.
core   +1 more source

On Simulating a Medium with Special Reflecting Properties by Lobachevsky Geometry

, 2013
Lobachevsky geometry simulates a medium with special constitutive relations, Di = ϵ0ϵ ikEk ,Bi = μ0μikHk where two matrices coincide: ϵik(x) = μik(x). The situation is specified in quasi-cartesian coordinates (x, y, z).
Veko, O. V., Ovsiyuk, E. M., Red’kov, V. M.   +2 more
core  

Bound States of a Particle in the Lobachevsky Space in the Case of the Coulomb-Like Barrier.

, 2011
Exact wave functions and energy levels are obtained for the bound states of a particle in the Lobachevsky space in the case of the Coulomb-like barrier.
Kudryashov, V. V.
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A Geometria de Lobachevsky

, 2013
The geometry is considered as a logical and deductible science. Euclid was the first mathematician to formulate and organize the knowledge within the geometry, in a work called 'The Elements'. Euclid developed his work based on five postulates. The fifth caused controversy because it had not the same intuitive evidence of the remaining ones.
openaire   +1 more source