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THE INERTIA OF LIGHT. VERIFICATION OF NEWTON’S SECOND LAW BY ACONFINED FLOW OF RADIATION IN A REFLECTIVE CAVITY

open access: yesAnales (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
doaj   +1 more source

Cascaded rotational Doppler effect [PDF]

open access: yesOptics 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
openaire   +3 more sources

On Ultrasonic MTI Measurement of Velocity Profiles in Blood-Flow [PDF]

open access: yesModeling, 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
doaj   +1 more source

Aircraft Detection Using Phase-Sensitive Optical-Fiber OTDR

open access: yesSensors, 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
doaj   +1 more source

Development and Validation of a Railway Safety System for Nordic Trains in Isolated Territories of Northern Quebec Based on IEEE 802.15.4 Protocol

open access: yesSensors, 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
doaj   +1 more source

On the symmetries of electrodynamic interactions

open access: yesScience & 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
doaj   +1 more source

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