scholarly journals Relativistic Effects of Light in Moving Media with Extremely Low Group Velocity

2000 ◽  
Vol 84 (5) ◽  
pp. 822-825 ◽  
Author(s):  
U. Leonhardt ◽  
P. Piwnicki
Keyword(s):  
Group Velocity ◽  
Relativistic Effects ◽  
Moving Media

Interferometric (Fourier-Spectroscopic) Measurement of Electron Energy Distributions

1990 ◽  
Vol 48 (2) ◽  
pp. 110-111 ◽  
Author(s):  
F. Hasselbach ◽  
A. Schäfer
Keyword(s):  
Group Velocity ◽  
Wave Packets ◽  
Index Of Refraction ◽  
Electron Wave ◽  
Fringe Contrast ◽  
Faraday Cage ◽  
Optical Index ◽  
Wien Filter ◽  
Coherent Wave ◽  
Electric And Magnetic Fields

Möllenstedt and Wohland proposed in 1980 two methods for measuring the coherence lengths of electron wave packets interferometrically by observing interference fringe contrast in dependence on the longitudinal shift of the wave packets. In both cases an electron beam is split by an electron optical biprism into two coherent wave packets, and subsequently both packets travel part of their way to the interference plane in regions of different electric potential, either in a Faraday cage (Fig. 1a) or in a Wien filter (crossed electric and magnetic fields, Fig. 1b). In the Faraday cage the phase and group velocity of the upper beam (Fig.1a) is retarded or accelerated according to the cage potential. In the Wien filter the group velocity of both beams varies with its excitation while the phase velocity remains unchanged. The phase of the electron wave is not affected at all in the compensated state of the Wien filter since the electron optical index of refraction in this state equals 1 inside and outside of the Wien filter.

RELATIVISTIC EFFECTS ON ARTIFICIAL SATELLITES

2012 ◽  
Vol 3 (1) ◽  
pp. 1-19
Author(s):  
Giacaglia Giorgio Eugenio Oscare ◽  
Keyword(s):  
Relativistic Effects ◽  
Artificial Satellites

Possible investigation of relativistic effects with the aid of molecular and atomic frequency standards

1961 ◽  
Vol 75 (9) ◽  
pp. 3-59 ◽  
Author(s):  
N.G. Basov ◽  
Oleg N. Krokhin ◽  
A.N. Oraevskii ◽  
G.M. Strakhovskii ◽  
B.M. Chikhachev
Keyword(s):  
Relativistic Effects ◽  
Frequency Standards ◽  
Atomic Frequency

The four-dimensional group velocity

1978 ◽  
Vol 125 (7) ◽  
pp. 549-565 ◽  
Author(s):  
V.G. Polevoi ◽  
S.M. Rytov
Keyword(s):  
Group Velocity ◽  
Dimensional Group

Classical mechanical analogs of relativistic effects

2004 ◽  
Vol 174 (8) ◽  
pp. 861 ◽  
Author(s):  
Andrei I. Musienko ◽  
Leonid I. Manevich
Keyword(s):  
Relativistic Effects
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