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Novel Relativity Theories of Synthetic Aperture Radar
Published in Maged Marghany, Automatic Detection Algorithms of Oil Spill in Radar Images, 2019
From the point of view of the relativity theory, time dilation is a distinction in the elapsed time measured through dual observers, either due to a speed distinction relative to each other or through being otherwise located relative to a gravitational field. In the consequence of the nature of space-time, a time that is shifting relative to a receiver will be measured to impulse slower than a time that is on relaxation in the antenna’s frame of reference. In this regard, a period that is underneath the impact of a superior gravitational field than an antenna will additionally be measured to tick slower than the time of radiated beams from the antenna. This is known as a delay time and symbolizes as τ (sec). The scientific explanation of the time interval between two pulses Δτ in that SAR frame can mathematically be given by: () Δτ=−Δt1−v2c2
Toward Accurate Simulation of Large-Scale Systems via Time Dilation
Published in Katalin Popovici, Pieter J. Mosterman, Real-Time Simulation Technologies, 2017
James Edmondson, Douglas C. Schmidt
The term time dilation has roots in the theory of relativity, pioneered by Albert Einstein in the early twentieth century [5]. In physics, time dilation is a set of phenomena that describe how two observers moving through space relative to each other or at different positions relative to objects with gravitational mass will observe each other as having erroneous clocks, even if the clocks are of identical construction. Relative velocity time dilation, the phenomenon described by two bodies observing each other’s clocks while moving at different velocities, is the best parallel for the definitions and usage of the terminology in the work on simulation by Gupta et al.
Travelling light
Published in Journal of Modern Optics, 2021
Third, making formal definitions of words that already have a meaning in our mother tongue is generally a bad idea because, unless the mother-tongue meaning and the new meaning are clearly distinguished and kept apart, the result is ambiguity and confusion. Many presentations of the special theory of relativity suffer from such ambiguity and confusion because it is difficult to read or write these familiar time words without having thoughts and feelings that reflect their role in our mother tongue but are not supported by Einstein’s definitions. The mother-tongue meanings of these words and Einstein’s definitions of them get blurrily blended together in the minds of authors and readers alike. Indeed, as I explain in detail in my paper ‘Critique of the Einstein clock variable,’ all the famously counterintuitive claims of the special theory of relativity – the relativity of simultaneity, time dilation, length contraction, and so on – are due precisely to associating the familiar time words with the peculiar properties of a spatially sloping clock variable [1]. A much better option for a thinker who needs a term for a freshly minted concept is to invent a word or coin a novel phrase. Having done that, he can explain why he considers the new concept to be valuable and recommend it for general use. If a new concept has genuine value, that value can and should be explained without branding it with a familiar word.
Vacuum friction
Published in Journal of Modern Optics, 2018
Stephen M. Barnett, Matthias Sonnleitner
where is the transition dipole matrix element and is the atomic transition frequency. If the atom is moving then there will be a change to this decay rate but only that required by the time dilation of special relativity, as may be confirmed by direct calculation [10]. This effect is of second order in the velocity and will not be of concern to us in this paper; we are interested in those effects that arise at first order in v / c.