Re: The Principle Release Announcment: Rocky Mountain Pictures
Bone for thread topic,
Quote:
In 1926 a very ambitious ring interferometry experiment was set up by Albert Michelson and Henry Gale. The aim was to find out whether the rotation of the Earth has an effect on the propagation of light in the vicinity of the Earth. The Michelson–Gale–Pearson experiment was a very large ring interferometer, (a perimeter of 1.9 kilometer), large enough to detect the angular velocity of the Earth. The outcome of the experiment was that the angular velocity of the Earth as measured by astronomy was confirmed to within measuring accuracy. The ring interferometer of the Michelson-Gale experiment was not calibrated by comparison with an outside reference (which was not possible, because the setup was fixed to the Earth). From its design it could be deduced where the central interference fringe ought to be if there would be zero shift. The measured shift was 230 parts in 1000, with an accuracy of 5 parts in 1000. The predicted shift was 237 parts in 1000.
Practical uses
The Sagnac effect is employed in current technology. One use is in inertial guidance systems. Ring laser gyroscopes are extremely sensitive to rotations, which need to be accounted for if an inertial guidance system is to return accurate results. The ring laser also can detect the sidereal day, which can also be termed "mode 1". Global navigation systems, such as GPS, GLONASS, COMPASS or Galileo, need to take the rotation of the Earth into account in the procedures of using radio signals to synchronize clocks.
Read more: http://www.answers.com/topic/sagnac-...#ixzz3ExBBRneh
Speed of light illusion?
https://www.youtube.com/watch?v=qy_9J_c9Kss
Re: The Principle Release Announcment: Rocky Mountain Pictures
Interesting video on magnetism, but am not sure what it really means. As to Sagnac and Michelson-Gale, this is covered quite a bit in Galileo Was Wrong. Both are seen asn challenging reltaivity, and spporting geocentrism.
Re: The Principle Release Announcment: Rocky Mountain Pictures
Quote:
Originally Posted by
JohnQPublic
The movie is not trying to prove geocentrism, only discuss evidence challenging the Copernican Principle.
Quote:
Originally Posted by
JohnQPublic
Interesting video on magnetism, but am not sure what it really means. As to Sagnac and Michelson-Gale, this is covered quite a bit in Galileo Was Wrong. Both are seen asn challenging reltaivity, and spporting geocentrism.
The observations with Sagnac and Michelson-Gale may work well to challenge Relative Theory,
while basing itself in heliocentrism.