First some preparations - (flight) training in the hypobaric chamber at NASA's neutral buoyancy lab:
The decompression chamber...
This window view demonstrates a sudden drop in air pressure and associated fogging. Because the
zero-g planes are more likely than regular planes to experience decpmpression, everyone has to be trained for this eventuality.
The experimental data (shown at right) consisted of displacing starch grains during
periods of weightlessness by a high gradient magnetic field. This field was created by inserting wedges of
varying geometry between two high-powered permanent NeFeBo magnets. The video shows the sedimentation of
grains, the phase of weightlessness, and displacement of the grains after wedge insertion.