Schlieren method
It has become especially widespread for visualizing various processes in an air environment.
It is probably the only way to observe convection live. In general, this method allows to see any change of density in transparent media. For example, when a candle burns, it heats the air, reducing its density, which allows to notice the obtained heterogeneities.
It has become especially widespread for visualizing various processes in an air environment.
It is probably the only way to observe convection live. In general, this method allows to see any change of density in transparent media. For example, when a candle burns, it heats the air, reducing its density, which allows to notice the obtained heterogeneities.