A must watch YouTube video on stylus in the groove!!!

Google Applied Science LP you tube.  Should be right at top.  Look at those grooves and how the needle is Bouncing!!!!  Now explain how important antiskate, null points, etc are.  If you thought your stylus was running parallel to the smooth groove walls Well so much for that.

This guy is selling nothing in this video.  No hypothesis to let his ego get in the way and no conclusion.  Well  I thought some of the more technical guys might get a bang out of this, regardless if it might make you rethink  your own hypothesis.

Enjoy the ride
Word salad to you. And that is your lack of understanding and vision. And dont send me a stupid private message like the one you sent in early March. You draw a blank. Tom

So you admit you didn't watch the video, didn't listen to even one single word, and so know precisely zero, but are blathering word salad anyway.

Well at least you admit it.

Oh, and the PM in early March? That was trying to stop you from doing real harm to another member. A very kind and innocent member who if I let everyone know what you are doing now you would be outcast. Persona non grata. To bring that up, congratulations, you just sank to the absolute bottom of the barrel.
Uberwaltz thats the one I was going to post. Thank you!

All of this was predicted by Zoeppritz in 1907..it has to do with seismic waves that travel thru the Earth...but also thru all materials.
Vinyl and speaker cones of any type. Your audio room, musical instruments of different materials and shapes. 

So if in the the 50 minute video the vibrational energy was to travel the flat plane and intersect a paper label or the outer edge of the record the energy would be reflected back towards the stylus and become a part of the intended signal..it would become a part of the signal. Not in phase..but it would now have many different phase components because of material type and all boundary interfaces..

When an incident P-wave strikes the boundary (or interface) between two media obliquely, the wave is split into reflected and refracted P-wave components and reflected and refracted S-wave components. The reflection and transmission coefficients vary as a function of the angle of incidence (hence, of source-receiver offset) and of the media's elastic properties, which comprise densities and bulk and shear moduli. The Zoeppritz equations (Chapter 1) give the reflection and transmission coefficients for plane waves, as a function of the angle of incidence and as a function of the three independent elastic parameters on each side of the reflecting interface. If the reflection amplitude is observed as a function of the angle of incidence, the variation of that parameter can be used to make inferences about the elastic parameters. Tom

Permalink: https://doi.org/10.1190/1.9781560803201.ch4

I did not write the info preceding the link and posting my name at the end.  Sorry I usually sign off the same way every time. Tom