Patent ID: 7290598

Claim:
A heat dissipating fin comprising: a longitudinally-extending base portion, a first longitudinally-extending approximately circular side, and a second longitudinally-extending approximately circular side, wherein the length of the fin, L, is approximately, L = 1 γ ⁢ ( 1 - 1 - ρ 2 ) , ⁢ where ⁢ ⁢ γ = h k ⁢ ⁢ and ⁢ ⁢ ρ = q o k ⁢ ⁢ θ o , ⁢ and where h is a heat transfer coefficient between the fin and a surrounding fluid, k is a thermal conductivity of the material used to make the fin, q o is a heat flow through the fin semi-base per unit depth, and θ 0 is a difference between a temperatures of a surface of the fin and the surrounding fluid.