Interference patterns

Applications of optical mesurement by holgraphy

Flame of candle

Interference patterns produced by flame of candle  

The air around the flame is warmed by heat. The phenomenon can be visualized by the interfence patterns.  The patterns are changed as the aye moves.

water strider

The surface of water around the legs of water strider becomes hollow by weight of it.  The shape of the hollow can be obtained by analyzing the patterns.  The patterns for this case are too fine to estimate the shape because this water strider is too heavy.  If the circular fringes is counted as 50, the surface of water shinks 80μm.

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