Thank you. The design of experiments and inventions are guided by theories and paradigms. I do not know enough about the technique or the theory behind laser cooling to relate them to my visualization. Obviously the theory works but that doesn't mean the paradigmatic concepts which gave rise to the theory can`t be questioned and alternatives considered.
Categorizing backward turning wagon wheels in a movie as an optical effect is an example of a paradigmatic filter (or cognitive bias) of how to receive the phenomena of backward turning beats. Then again perhaps the phenomena is extensively used by physicists, and this exercise has just been about uncovering my own cognitive bias. Harry On Fri, Oct 23, 2020 at 10:14 AM Don86326 <don86...@gmail.com> wrote: > 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> 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> 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> 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> >
