15 Degree Display Bin in Wine Racks
 

Can anyone explain to me why all wine racks seem to use a 15 degree angle
for the display bin. I've used a 20 degree angle as it offers a better
view of the bottle and every type of bottle that I've tried still has its
cork covered by liquid. I suppose that if it lost a significant amount of
liquid that there might be a problem, but I just don't perceive one. Is
there something magical about 15 degees?

-- Geoff