Challenge for Steve Mould

Steve,
  *  Here is a challenge for you that might have profound scientific interest.
  *  Make a hollow uniformly thick sphere of flexible and resilient material, possibly rubber or plastic, this coated or impregnated with a material that changes color with stretch.  It should have much more inertia than adjacent air so waves would propagate tangentially rather than radially.
  *  With that you should be able to visualize nodes and antinodes of spherical standing waves as you oscillate a small area with focussed sound waves of various pitches.
  *  The dynamics of your sphere should be those of a spherical bell.  You might be the first to observe such dynamics, possibly amazing shapes of overtones.
  *  It seems interesting to speculate whether energies of any electron in any atom might be overtones in spherical electron clouds.
  *  Let me know your thoughts on the spherical bell, if any.
David Regen, xmsdavidr@gmail.com