Each year, the American Physical Society presents several awards to individuals to honor their contributions to the field. The recipients for 2004 are as follows.

The Will Allis Prize was awarded to J. William McConkey, professor emeritus and university professor of physics at the University of Windsor in Ontario. He was honored by the society for his “innovative experimental studies of electron collisions with atoms and molecules, which have significantly advanced our understanding of collisional and radiative processes in ionized gases at the microscopic level.”

Federico Capasso was the recipient of this year’s Arthur L. Schawlow Prize. He was selected for his “seminal contributions to the invention and demonstration of the quantum cascade laser and the elucidation of its physics, which bridges quantum electronics, solid-state physics, and materials science.” Capasso is the Robert L. Wallace Professor of Applied Physics and Vinton Hayes Senior Research Fellow in Electrical Engineering at...

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