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.
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.