YourTube Extended Michelson-Morley Experiment

[pese]

Wow, cool experiment.  I wonder if this is due to torque on the mirrors / beamsplitter from gravity.  If the optical elements were securely sandwiched between two plates instead of just one it would be more convincing.  11 fringes @ 532nm corresponds to 11*532 = 5852 nm of displacement between the two beam paths.  That is only 5.85 microns.  This displacement could easily be produced by gravitational torque, even with a very secure mount.

Hi,

Many people ask for the gravity forces.

IF this is so.
it cant be possibel , the the "otical stripes" can change
the sense of tork, IF that come over ZERO (at 12:00 and 6:00)
Give attention  1:00to 5:00  and 7:00 to 11:00 the tork change
right to left turning the stripes

Pese

The German Version of that Vidio is now on 3. place in YT !!

[BEP]

Excellent demonstration!

I suspect this is merely confirmation of light being bent by Coriolis force.
If so, then the reverse effect would be seen when the experiment is performed in the Southern hemisphere.

It would be interesting to know what is the experiment's orientation to Earth's magnetic poles and does the effect change with a different orientation?

BEP

[pese]

Excellent demonstration!

I suspect this is merely confirmation of light being bent by Coriolis force.
If so, then the reverse effect would be seen when the experiment is performed in the Southern hemisphere.

It would be interesting to know what is the experiment's orientation to Earth's magnetic poles and does the effect change with a different orientation?

BEP

HI BEP.

YES, good Idea.

BUT THIS WAS TESTED.
( With on strong Neodym Magnet, directly in the near to the (only 10cm arms of equiplemnt.... It mak NO Differnce to the Inference-Strips.,will follow!
So the no any Magnetfield (als not of the earth) is the cause to this .

Gustav Pese


ADD:

Also not Gravity  is the cause.
The ZERO (Null) Point oft the turns (left to right) is not
at 0:00 ant 6:00.

I study the Vid and have seen this.

The Autor (Martin) say  the point are at about 1:30 and 7:30

AND CHANGE +/- 3 to 4 Degrees !! to the Time !! 
In Morning and Evening , the Zero point ist different !!

Very surprizing

[zerotensor]

http://www.wolframalpha.com/input/?i=5852+nanometers

if the distance between the beam-paths move by an amount on this order of magnitude, then this could explain the effect.  I can imagine that this might occur when the interferometer is mounted vertically.  The experiment needs to be repeated with this in mind.  I recommend using interferometers held tightly between two plates.

Blood-cells and spider's silk are not very big...  We need to design the apparatus to make sure that the mirrors, laser, and beamsplitter do not sag under the influence of gravity.

[BEP]

Before possible magnetic effects are discounted the magnets should be removed from the experiment and the polar orientation changed in the experiment. I know this is hard to believe but there is a difference between the two fields. That discussion is for another thread.

Distortion by gravity is a valid thought. Distortion by several microns is indeed possible. This would occur where it is shown.

This is a consideration in fine laser alignment of precision machinery.