Harry, I see a great visual example! Thank you.
But now my brain is interfering.
What about light beams with a beat frequency that's a forward motion?
The 'pattern' would move superluminally forward in the interfering beams.
So, if superluminal moire interference beats are an abstract
relationship that travels superluminally, how are atoms cooled by
capturing them in crossed laser beams of differing colors?
Condensed matter is cooled as trapped-atoms in crossed lasers. Does this
mean the atoms are literally nesting in an interference pattern? The
abstraction seems physical now.
Suppose for confusion one of the laser beams with trapped atoms is
changed in frequency that causes a change of the location of the
interference pattern nesting the atom.
If the atom follows the pattern-nest, and the nest moves superluminally,
what would the atom do? Assume the acceleration is gradual enough that
the atom remains coupled in the nest that accelerates past light speed.
I don't know enough about physics to get confused the right way.
Is this just a confused way to dance around another paradox? Or, is the
premise of the question screwed up?
-don
On 10/22/2020 10:09 PM, H LV wrote:
Yes, I have noticed wagon wheels turning in the "wrong" direction in
movies. Since wheels do not really behave like this the phenomena of
backward moving beats is usually classified as an optical artifact
with no deep significance for physics. However, the black and white
stripes of the moire beats is an abstract pattern so it is not
encumbered with competing notions of what is real vs what is an illusion.
Here I animated forward and backward moving beats using a combination
of stationary and moving sine waves
of different frequencies:
https://drive.google.com/file/d/1euX-XvQPSTCTybGXifOe1YL8Frorb-ZQ/view?usp=sharing
What do you see now?
Harry
On Thu, Oct 22, 2020 at 8:40 PM Terry Blanton <hohlr...@gmail.com
<mailto:hohlr...@gmail.com>> wrote:
You ever see a wheel turn backwards from the direction of the
vehicle on a movie?
On Thu, Oct 22, 2020 at 1:23 PM H LV <hveeder...@gmail.com
<mailto:hveeder...@gmail.com>> wrote:
Don,
There is a lot of material to digest.
People who are well versed in the mathematical properties of
waves probably don't find any of this astonishing, but until I
watched the video of moving moire beats I didn't know beats
could move backwards relative to the direction of the motion
of the underlying waves.
Using a geometry program called Geogebra to construct sine
waves I confirmed that if a moving wave W* is superimposed on
a stationary wave W the beat will move in the same direction
as wave W* if the frequency of W* is greater than wave W, but
the beat will move in the opposite direction if the frequency
of W* is less than W.
Harry
On Wed, Oct 21, 2020 at 3:04 PM Don86326 <don86...@gmail.com
<mailto:don86...@gmail.com>> wrote:
On 10/19/2020 12:10 PM, H LV wrote:
https://youtu.be/6I0SF0dXoZg
In addition to the generation of moire beats with
different frequencies this video also seems to show that
whether the moire beats move in the same or opposite
direction as the revealing plane will depend on the
spacing of the lines in the base plane.
Harry
Yes, a ratio between patterns select the direction that
the interference patterns go relative to base grid-pattern
movement. Moire pattern acceleration.
That's a really great video you supplied showing pattern
acceleration, Harry, in your message above.
Vernier-caliper scales work on the same principle of
ratios between two scales. The slide rules from back in
the day produce an interference between two graduated
scales as an arithmetic solution --a bit akin.
Have you heard of the moire pattern magnetic gears as
torque/speed/direction converters? They use the same
principle of interference pattern
acceleration/deceleration --but with magnets...
*Magnomatics Magnetic Gear:*
https://www.youtube.com/watch?v=Ed4aitAXDsg
*Magnetic Gear:*
https://www.youtube.com/watch?v=_qpHMZ9L4P8
<snip>
