effects of bass on light

[dnsey]

A simple way to demonstrate (or disprove) that this is a physiological effect would be to stand *outside* the vehicle, looking through the windows (across the 'sound cell' of the vehicle) at the monitor (or whatever).
I would expect there to be no observable effect on the image.

[bottomfeeder]

Originally posted by richie00boy
The reason is the refresh rate on the monitor modulates with the vibrations to your eyeballs caused by the bass. You can recreate the effect by shaking your head around a bit while watching TV.

I noticed this effect 20 years ago in front of radioshack , I had 2x EV 15b's driven by a 3 piece zapco system on my bug , radio shack had only a CRT's when the subs hit all the crt's would squat , I figured it was something envolving vibrations on my eyeball , but it took 20 years and a educated awnswer from richie00boy to solve it !
thanks

[Westerp]

Scanlines

The physics of the CRT require that a finite time interval is
allowed for the spot to move back to the start of the next line

Raster scanning has to be performed sufficiently quickly that
persistence of vision allows the eye to view a stable image, and such
that moving images can be displayed without appearing jerky

In practice, a rate of 50 or 60 hertz is a satisfactory compromise,

Playing loudish bass does indeed move your whole body including the eyeballs
and your focus bounces between the scanlines.