shadowgraphy
/ʃæˈdɑːɡrəfi/
noun
- The art or practice of making shadow images or silhouettes, often by hand gestures or by projecting shadows onto a screen.
- She learned shadowgraphy from her grandfather, who could make a perfect rabbit shadow on the wall.
- Shadowgraphy was a popular form of entertainment before the invention of movies.
- The performer entertained the audience with shadowgraphy, creating animals and faces with his hands.
- A scientific technique that uses shadows to study the flow of fluids or the shape of objects, often in physics or engineering.
- In the lab, shadowgraphy helped the students see how heat rises from a candle flame.
- The engineer used shadowgraphy to visualize the air currents around the airplane wing.
- Shadowgraphy is a useful tool for studying shock waves in wind tunnels.