Compression Wave Phenomena
This video demonstrates the effects of a blast wave moving through a confined space. Gelatine, a bi-refringent, non-compressible media which is highly sensitive to changes in density, reveals the nature of the compression wave as the blast coalesces and reflects within the confined area. The phenomenon is revealed using photoelastic stress analysis and captured using high speed video (2.16 microseconds @ 2000fps).
Many thanks to Olympus for the use of their iSpeed 3 camera in this experiment.