 This motivated the first further development of the Eulerian theory of rigid body dynamics after nearly 200 yearsto address this kind of momentum-preserving energy dissipation.Sometimes the instrumentation reported the expected cosmic ray count (approximately 30 counts per second) but other times it would show a peculiar zero counts per second.The University of Iowa (under James Van Allen) observed that all of the zero counts per second reports were from an altitude of more than over South America, while passes at would show the expected level of cosmic rays.