Results 281 to 290 of about 26,015,827 (334)
Some of the next articles are maybe not open access.
Modeling and Analysis of Acoustic Noise in External Rotor In-Wheel Motor Considering Doppler Effect
IEEE transactions on industrial electronics (1982. Print), 2018In this paper, the characteristics of the electromagnetic noise radiated by an external rotor in-wheel motor (IWM) are investigated with the Doppler effect taken into consideration.
Fu Lin +3 more
semanticscholar +1 more source
Analysis of rotational Doppler effect based on radio waves carrying orbital angular momentum
Journal of Applied Physics, 2018The electromagnetic beam carrying orbital angular momentum (OAM) has a twisted phase front, which can induce a rotational Doppler frequency shift when it is illuminating on a spinning object.
Jiayu Zheng +3 more
semanticscholar +1 more source
Doppler effect in high-speed rail seismic wavefield and its application
Science China. Earth Sciences, 2022Yiran Jiang +3 more
semanticscholar +1 more source
American Journal of Physics, 1972
Expressions for the Doppler effect are derived without employing any assumption about the phase of a plane wave. It is shown that the invariance of this phase under both the Galilean and the Lorentz transformations is a trivial consequence of the mathematics and, is independent of its association with any physical process.
openaire +1 more source
Expressions for the Doppler effect are derived without employing any assumption about the phase of a plane wave. It is shown that the invariance of this phase under both the Galilean and the Lorentz transformations is a trivial consequence of the mathematics and, is independent of its association with any physical process.
openaire +1 more source
Interferometry and the Doppler Effect
Applied Optics, 1969D, Malacara, I, Rizo, A, Morales
openaire +2 more sources
Abstract This chapter explores how the Doppler Effect, first described by Austrian physicist Christian Doppler in 1842, was crucial to extracting scientific value from Sputnik’s radio signal. The frequency shifts in the signal provided information about the satellite’s speed and trajectory.
openaire +1 more source
openaire +1 more source
The Journal of the Acoustical Society of America, 2010
The Doppler effect describes the change in frequency observed for a moving source and/or receiver. A common example of the Doppler effect involves a moving vehicle sounding a siren or horn as it approaches, passes, and recedes from an observer. The observed frequency (compared to the emitted frequency) is higher during the approach, is identical at the
openaire +1 more source
The Doppler effect describes the change in frequency observed for a moving source and/or receiver. A common example of the Doppler effect involves a moving vehicle sounding a siren or horn as it approaches, passes, and recedes from an observer. The observed frequency (compared to the emitted frequency) is higher during the approach, is identical at the
openaire +1 more source
The Doppler effect is the same for both optics and acoustics
, 2021Shukri Klinaku
semanticscholar +1 more source
Thermal waves emitted by moving sources and the Doppler effect
, 2021R. L. Voti, M. Bertolotti
semanticscholar +1 more source