The URSI awards are presented at the Opening Ceremony of the URSI General Assembly.
The "senior" awards are the Balthasar van der Pol Gold Medal, the John Howard Dellinger Gold Medal, the
Appleton Prize, and the Booker Gold Medal, and the "junior" award is the Koga Gold Medal.
Recipients of the URSI Awards 1975
Dr. J.V. EVANS, USA
Citation: "Ionospheric physics, including application of the incoherent scatter technique.".
Balthasar van der Pol Gold Medal
Prof. L.B. FELSEN, USA
Citation: "Application of ray-optical methods to studies of the propagation and diffraction of electromagnetic waves.".
John Howard Dellinger Medal
Prof. N.M. BRICE, USA
Citation: "Theory of the Earthís plasmapause and theoretical investigations of the physics of Jupiterís magnetosphere.".