Results 201 to 210 of about 1,375,829 (260)
Advanced Materials, EarlyView.Heterostructure photodiode devices of p‐type WSe2 with n‐type NiPS3 constructs spectrally protected spin‐polarized photocurrents. The energy of the excitation photon serves as an independent control parameter for spin‐selective photocurrent generation. ABSTRACT Efficient generation and control of spin‐polarized currents in semiconductors remain central
Rajesh Kumar Yadav +8 more
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Transactions of the American Institute of Electrical Engineers, 1926
UNTIL rather recently, the practise of radio communication was confined to the use of long, earth-bound waves. These waves are preferred on account of the regularity of day and night operation and the absence of fading. The characteristics of the earth-bound wave were extensively explored and there was a tendency to generalize these results assuming ...
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UNTIL rather recently, the practise of radio communication was confined to the use of long, earth-bound waves. These waves are preferred on account of the regularity of day and night operation and the absence of fading. The characteristics of the earth-bound wave were extensively explored and there was a tendency to generalize these results assuming ...
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“Velocity of Light and of Radio Waves”
Nature, 1950I SHOULD like to direct attention to the fact that in my article on the velocity of light and of radio waves1 the result announced by Houstoun2 was unfortunately omitted. It had not been published when my article was prepared, but could have been inserted had I noticed it in time.
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Looking for radio waves with a simple radio wave detector
The Physics Teacher, 2011I created a simple device that can detect radio waves in a classroom. In physics classes I tell students that we live in a sea of radio waves. They come from TV, radio, and cell phone signals as well as other sources. Students don't realize this because those electromagnetic waves are invisible.
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Wave-particle nature of radio waves
2016 13th International Conference on Modern Problems of Radio Engineering, Telecommunications and Computer Science (TCSET), 2016It is shown that radiowaves as part of the range of electromagnetic waves have a dual wave-particle nature. Some particles of radio waves are in the oscillation state in which the transition of electromagnetic energy to particle mass and vice versa occurs.
Bogdan A. Sus, Bogdan B. Sus
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Generation of Radio Waves in Pulsars
Nature, 1970Pulsars generate radio waves by an unknown process which gives the highest volume emissivity known in astrophysics. The radiation forms a beam the width and polarization of which are independent of frequency. This article assembles the observational facts which any theory of emission must explain.
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Radio Wave Scattering in the Ionosphere
1964Publisher Summary This chapter examines the radio wave scattering in the ionosphere. Scatter propagation is used for a number of important methods of information transmission. With the increase in radar sensitivities, various scatter modes have proven to be increasingly annoying sources of clutter and interference.
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Radio Wave Tomography: Imaging Ore Bodies Using Radio Waves
3rd SAGA Biennial Conference and Exhibition, 1993Radio tomography (RT) extrapolates geological information between boreholes, by producing attenuation images of the intervening rockmass. In this paper the underlying principles of this novel geophysical technique are described, and case studies from a variety of geological and rnining environments are presented.
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