Heather Van Houten

We don’t have enough information about this author to calculate their statistics. If you think this is an error let us know.
Learn More
The construction of a Drew type variable shear wavefront shearing interferometer, useful for testing optical systems of large aperture and short focal length, is described. The mechanical arangement, used for adjustment of the mirrors and the dividing plate, and a novel arrangement to achieve white light compensation easily, are described. Sheared(More)
BACKGROUND Knee injuries account for approximately one third of injuries in skiers. Researchers have proposed several mechanisms of knee injury in skiers. However, the frequencies of these mechanisms have varied in different studies. PURPOSE To identify the most common knee injury mechanisms in recreational downhill skiers and to assess injury frequencies(More)
  • 1