Golf ball dimple surface
Golf ball dimples having a surface defined by a mode, or a weighted superposition of multiple modes, of oscillation of a circular membrane are disclosed.
1. A golf ball having a plurality of recessed dimples on the surface thereof, wherein at least one of the dimples has a chord depth of from 0.001 inches to 0.030 inches and a dimple surface defined by a Bessel function with a membrane fixed at the boundary, wherein the Bessel function is of the m th order wherein m=2 and n=1.
2. The golf ball of claim 1 , wherein each of the dimples having a surface defined by a Bessel function of the m th order has a diameter of from 0.005 inches to 0.300 inches.
3. The golf ball of claim 1 , wherein the dimples having a surface defined by a Bessel function of the m th order have a chord depth of from 0.005 inches to 0.015 inches.
4. The golf ball of claim 1 , wherein the dimples having a surface defined by a Bessel function of the m th order have a chord depth of from of from 0.007 inches to 0.010 inches.
5. The golf ball of claim 1 , wherein the dimples having a surface defined by a Bessel function of the m th order have an edge angle of from 1° to 100°.
6. The golf ball of claim 1 , wherein the dimples having a surface defined by a Bessel function of the m th order have an edge angle of from 5° to 90°.