Hoersch has given a theoretical explanation of the optimum angle of a conical horn experimentally found by the writer. The optimum angle is the one giving the greatest amplification, the horn acting as a receiver. The theory of Hoersch states that the angle is an optimum when the dissipation at the vertex is equal to the dissipation at the open end.
Proceedings of the Iowa Academy of Science
©1924 Iowa Academy of Science, Inc.
Stewart, G. W.
"Note on the Theory of the Optimum Angle of a Conical Horn,"
Proceedings of the Iowa Academy of Science, 31(1), 381-381.
Available at: https://scholarworks.uni.edu/pias/vol31/iss1/128