The MRI sensor or magnetometer uses laserlight and gas to measure magnetic fields. Photo: University of Copenhagen. Credit: Photo: Kristian Bjorn-Hansen, University of Copenhagen The MRI sensor or ...
This is a sound head created by John J. Wild in 1949. It is a brass capsule constructed by Wild to house a piezoelectric quartz crystal, or transducer. The crystal is still within the sound head. Wild ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results