| Topic for open discussion: Polarized
Waves on a Tether
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| June
23, 2020, post by Dave Santos Polarized Waves on a Tether Standing and traveling wave polarizations on an ordinary tether, that can produce significant engineering dynamics: 1 longitudinal mode 2 transverse modes 2 chiral helical modes These modes can comprise a single evolving packet wave. Internal group waves superpose and alternate freely. They are always present, if not much noticed. Such coherent complex waves are fully analogue QM. There is scant literature of these macroscopic dynamics. The easy way to observe these evolving wave functions is sighting along a semi-tensioned horizontal line. The waves easily input by hand after a few seconds practice. Semi-tension slows sonic c down enough to easily observe all five polarizations weaving along. Similar observations are made of 6-DOF kite motions and kite-tether interactions. =============================== Ed asks Dave: "What is "sonic c" ? Answer by Dave: "c" is by established scientific convention used for both photon speed-of-light and phonon speed-of-sound domains. "Sonic c" is simply trying to be helpful to parties well used to luminal "c". Sonic relativity is a serious technical factor in kite systems, especially at low variable tensions, like flying an MLK on long lines in low wind. wiki/Speed_of_sound Italic c to be specific:
WP: "The speed of sound in mathematical notation is conventionally represented by c, from the Latin celeritas meaning "velocity"."
Ed adds: wiki/Phonon | wiki/Transverse_wave | |