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Anales (Asociación Física Argentina), 2023 In 1904, the Austrian physicist Fritz Hasenöhrl examined by means of mental experiments the black body radiation in a reflecting cavity. By calculating the work required to keep the cavity moving at constant velocity in opposition to the radiation ...
C. M. Figueroa, S. Saracho
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On Ultrasonic MTI Measurement of Velocity Profiles in Blood-Flow [PDF]
Modeling, Identification and Control, 1981 A theoretical analysis of Doppler frequency estimators proposed to be used in ultrasonic MTI measurements of velocity profiles in blood flow, is given. The estimators give an output in form of a single analogue voltage and the relation of the output to ...
Bjørn A.J. Angelsen +1 more
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Aircraft Detection Using Phase-Sensitive Optical-Fiber OTDR
Sensors, 2021 Aircraft detection plays a vital role in aviation management and safe operation in the aviation system. Phase-Sensitive Optical Time Domain Reflectometry (Φ-OTDR) technology is a prevailing sensing method in geophysics research, structure inspection ...
Yunpeng Cai +4 more
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Sensors, 2021 Connected objects are deployed all over the world. Thus, they are contributing to improving communications. In urban areas, technological challenges are gradually being overcome, and advances in this area are exponential.
Laurent Ferrier +3 more
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On the symmetries of electrodynamic interactions
Science & Philosophy, 2022 While mechanics was developed under the idea of reciprocal action (interactions), electromagnetism, as we know it today, takes a form more akin to unilateral action.
Hernán Gustavo Solari +1 more
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Science & Philosophy, 2023 Christian Doppler, an Austrian physicist, described in 1842 the apparent change in frequency of a wave when motion of the source or the observer is involved. Named after him, this change in observational frequencies is known as the Doppler Effect.
Denis Thomas
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International Archives of Otorhinolaryngology, 2013 Sumarry Introduction: Spinocerebellar ataxia (SCA) is a degenerative disease that can cause loss of coordination of voluntary muscle movement such as that required for swallowing.
Edna Márcia da Silva Abdulmassih +2 more
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Simple Experiment of Doppler Effect Using Smartphone Microfon Sensor
Jurnal Penelitian Fisika dan Aplikasinya, 2020 Doppler effect is the physical phenomena in which the emitted frequency is a source of change at a time when accepted by the detector due to relative movement of the detector towards the source of the wave or vice versa.
Adam Malik +4 more
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Cascaded rotational Doppler effect [PDF]
Optics Letters, 2019 We propose and substantiate experimentally the cascaded rotational Doppler effect for interactions of spinning objects with light carrying angular momentum. Based on the law of parity conservation for electromagnetic interactions, we reveal that the frequency shift can be doubled through cascading two rotational Doppler processes which are mirror ...
Deng, Junhong +3 more
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