Where to download Cabri Géomètre II Plus ?
Once installed, download the following fig files (the files with extension fig are files created under Cabri software) :
The deviation (first observed by Bradley) is a relativistic effect on the path of a light ray that goes across a mobile. This document shows how to represent this deviation with Cabri Géomètre. You can change the mobile speed thus the ratio v/c or the source position relative to the target to see the variation of the deviation.
In this example, you can manipulate the objects to see the deviation effect in relation to the position of the source and the mobile speed under Cabri Java.
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Let's see how the deviation behaves for different values of mobile speed.
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How does a light beam reflect in a spherical mobile ? Einstein stated that the ray will go always through the center. In my opinion, the relativistic deviation will make the beam to follow different paths in relation with the mobile speed or the position of the source.
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Effect on shadows.
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Effect on a convergent lens
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Variation of the focus and optical aberration
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Trajectory of a photon emitted from a mobile source
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PDF 2
PDF 3
Works on relativistic deviation
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PDF 2
Effects on a parabolic dish
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PDF 2
Multiple reflections between 2 parallel plane mirrors
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Deviation of a light beam
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Michelson-Morley : Round trip timing
Example with Cabri Java
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Effects a converging source
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Effects on a radiating source
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Effects on propagation time with an converging light source
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Effects on propagation time with an spreading out light source
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Effects on images in a dark room
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Effects on reflection in a un mirror
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Interaction between particles
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Let's have a walk in a relative star field.
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How light propagation
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What does an observer see when he moves as fast as the light ? You have heard about light cone, here comes the dark cone.
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Reflexion in a mirror : is Snell's law still valid at relativistic speeds ? .
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Sagnac effect : 2 lightrays emitted both ways on a circular mobile in rotation do not reach the destination at the same time after a round trip.
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Reflexion again .... Where do lightrays impact after reflexion ?
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In this example, you can see the effect of deviation on a beam of light emitted by a relativistic electron.
Updated 08/23/2005
