28,526 research outputs found
Possible interaction of interstellar particles with the solar and terrestrial environment
The possibility for detection of interstellar particles in the earth's environment is considered on the basis of the passage of the solar system through the interstellar medium. Among the forces which inhibit interstellar particle penetration, the deflection by the solar magnetic field and the repulsive force due to the radiation from the sun are by far the most important
Wave length dependence of polarization by small graphite flakes
Graphite polarization data for semi-quantitative estimation of interstellar radiation wave extinction by small graphite flake
Combined electrolysis device and fuel cell and method of operation Patent
Operation method for combined electrolysis device and fuel cell using molten salt to produce power by thermoelectric regeneration mechanis
Chirplet approximation of band-limited, real signals made easy
In this paper we present algorithms for approximating real band-limited
signals by multiple Gaussian Chirps. These algorithms do not rely on matching
pursuit ideas. They are hierarchial and, at each stage, the number of terms in
a given approximation depends only on the number of positive-valued maxima and
negative-valued minima of a signed amplitude function characterizing part of
the signal. Like the algorithms used in \cite{gre2} and unlike previous
methods, our chirplet approximations require neither a complete dictionary of
chirps nor complicated multi-dimensional searches to obtain suitable choices of
chirp parameters
Visible absorption spectra of sodium in sodium iodide
Visible absorption spectra of molten sodium in sodium iodid
- …