derived dynamically by Hasenöhrl differs from between the energy and linear momentum ( and Newtonian time by the Doppler effect expanded to second order to relation is the correct one for a radiation velocity-induced Doppler effect expanded to the second order results in an increase in the radiation. The velocity-dependent increase in the internal of entropy consistent with Planck’s blackbody r...

In general relativistic framework of large scale structure formation theory in the universe, we investigate relation between density contrast and peculiar velocity in the Newtonian gauge. According to the gauge–invariant property of the energy–momentum tensor in the this gauge, the velocity perturbation behaves as the Newtonian peculiar velocity. In this framework, relation between peculiar vel...

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Introduction Weather radars are commonly employed for detection and ranging of precipitation, but radars with Doppler capability can also provide detailed information on the wind associated with (severe) weather phenomena. The Royal Netherlands Meteorological Institute (KNMI) operates two identical C-band (5.6 Ghz) Doppler weather radars. One radar is located in De Bilt and the other one is loc...

The linear Doppler shift is familiar as the rise and fall in pitch of a siren as it passes by. Less well known is the rotational Doppler shift, proportional to the rotation rate between source and receiver, multiplied by the angular momentum carried by the beam. In extreme cases the Doppler shift can be larger than the rest-frame frequency and for a red shift, the observed frequency then become...

After an overview of various citations relevant in the context of photon propagation, the relativistic longitudinal Doppler effect and the addition theorem of velocities are first derived taking into account momentum and energy conservation. Clocks, the transverse Doppler effect and aberration are treated next, before the Lorentz contraction of rods is discussed. The Michelson–Morley experiment...

synthetic aperture radar (sar), which has been widely used for earth remote sensing, provides high resolution, day-and-night and weather-independent images for a multitude of applications. design of sar sensors has had some considerations, associated to sar systems issues (microwave propagation, antenna, orbit design and etc.). altitude and attitude errors of sar sensor have a direct effect on ...

Techniques to accumulate and cool positrons in Penning traps provide new tools to study atomic and molecular physics and chemistry. This chapter presents an overview of studies of the interaction of low-energy positrons with atoms and molecules using these methods. In the vacuum environment of a trap, isolated twobody interactions of positrons with atoms and molecules can be studied with precis...

The frequency shift of spectral lines from astronomical objects is most often explained by the Doppler Effect arising in relative motion and the broadening of a particular line is supposed to depend on the absolute temperature , pressure or the different line of sight velocities.. The Wolf effect on the other hand deals with correlation induced spectral changes and explains both the broadening ...