Look up: shadowgraph

1. Shadowgraph
   A picture or image in which steep density gradients in the flow about a body are made visible, the body itself being presented in silhouette.The optical method or technique by which this is done. A shadowgraph differs from a schlieren photograph in that the schlieren method depends on the first deri...
   Found on http://www.diracdelta.co.uk/science/sour
   
   
2. shadowgraph
   a means of visualizing the rate of change of density gradient in an airflow by projecting parallel light through the flow field Category: Standards, measures and testing
   Found on http://www.mijnwoordenboek.nl/definition
   
   
3. shadowgraph
   (from the article `Tesla, Nikola`) Tesla soon established his own laboratory, where his inventive mind could be given free rein. He experimented with shadowgraphs similar to those that ...
   Found on http://www.britannica.com/eb/a-z/s/73
   
   
4. Shadowgraph
   Shadowgraph is an optical method that reveals non-uniformities in transparent media like air, water, or glass. It is related to, but simpler than, the schlieren and schlieren photography methods that perform a similar function. Shadowgraph is a type of flow visualisation. In principle, we cannot di...
   Found on http://en.wikipedia.org/wiki/Shadowgraph