612 Dokumente gefunden :

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2019

Stellar Aberration and Light-speed Constancy

The distance traveled by a light ray from the vantage point of an observer on earth is analyzed in order to obtain a perspective on the phenomenon of stellar aberration. It is pointed out using vector addition that the latter distance is not the same as that traveled by the light relative to the sun.…
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2019

Criticism of the Lorentz Transformation

The Wikipedia section which asserts the viability of the Lorentz transformation (LT) is incomplete and therefore faulty. It ignores a contradiction between two of its most famous predictions, namely proportional time dilation (TD) and remote non-simultaneity (RNS). This conclusion is justified upon consideration…
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2019

Critique of Einstein's Light-speed Postulate

There are two conflicting interpretations of Einstein's light-speed constancy postulate, which he enunciated in his landmark 1905 paper on relativistic mechanics. The one that he proposed in his work was that the speed of light (c) in free space has the same value for all observers independent of…
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2019

Hamilton's Canonical Equations and Einstein's E=mc2 Relation

The history of Einstein's landmark introduction of the energy-mass equivalence relation is reviewed. Emphasis is placed on the role that Hamilton's Canonical Equations play in arriving at the famous E=mc2 formula. Although both Einstein and Planck derived the relativistic energy-momentum relationships…
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2018

Evaluationsbericht der Schülerinformationstage 2018

Erschienen: Wuppertal : Zentrale Studienberatung, 2018
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2018

Uniform Scaling of Physical Units and the Principle of Rationality of Measurement

One of the most basic principles in science is the objectivity of measurement of physical properties. According to the special theory of relativity (STR), this ancient principle is violated for observers in relative motion since it predicts that they generally will disagree on the ratios of the lengths…
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2018

Relativity Laws for the Variation of Rates of Clocks Moving in Free Space and GPS Positioning Errors Caused by Space-weather…

The proposed chapter enunciates the physical laws governing the way that the rates of atomic clocks vary in free space with their state of motion and position in a gravitational field. However, such ideal conditions are periodically disrupted by space-weather events that can lead to critical deviations…
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2018

The Theoretical Explanation for the Sound Barrier and its Relation to Light Refraction

It is pointed out that application of the Doppler effect to sound waves created by airplanes leads to the conclusion that when they are accelerated to the speed of sound (Mach 1), the wavelength decreases to zero (λ=0). The de Broglie relation between momentum and wavelength (p=h/λ) which was used to…
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2018

Electroweak Analogue of the Stern-Gerlach Effect: Parity Conservation Restored?

The history of the longitudinal polarization experiments carried out by Wu et al, in 1957 is reviewed. It is pointed out that the conclusion that these results are an indication of parity non-conservation in weak decays rests on a key assumption, namely that the electron and neutrino are created in the…
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2018

Mass-Energy Equivalence Relation (E=mc2)

Perhaps the most well known of Einstein’s innovations in the theory of relativity is the E=mc2formula. It relates the inertial mass m of any object to its total energy content E (c is the speed of light in free space: 299792458 ms-1). Let us first see how he derived this formula in his seminal 1905 paper…
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2018

Newtonian Particle Theory of Light

Light refraction is a common phenomenon that is readily observed with the naked eye. Yet a mathematical formula to describe the effect was only realized in the early 17thcentury. In terms of the modern-day quantity refractive index n, Snell’s result is: n1 sinΘ1= n2 sinΘ2, where Θ1and Θ2, are the respective…
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2018

Newton’s Theory of Light and Wave-particle Duality

The long history of the dispute among physicists as to whether matter is composed of particles or waves is reviewed. A turning point came at the dawn of the 20th century in the form of the deBroglie momentum-wavelength and Bohr/Planck energy frequency relations. It was on this basis that Schrödinger…
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2018

The GalileanVelocity Transformation and Newtonian Simultaneity

The Galilean Velocity transformation (GVT) is a very useful tool in everyday life. For example, consider a truck passing someone standing on a street corner. The truck is moving at a constant speed of v=40km/h relative to him. The driver reports that there is a car moving ahead of him in the same direction…
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2018

Inertial Clocks and Remote Non-Simultaneity

A key prediction of Einstein’s Special Theory of Relativity (STR) is Remote Non-Simultaneity (RNS). It is derived from the equation below from the Lorentz transformation (LT), which is the cornerstone of STR: Δt’ = γ(Δt –vΔx/c2) γ= (1 –v2c-2)-0.5 Einstein famously used the example of two lightning strikes…