Candle,schlieren image. Air around a candle can be seen coiling and rising. Hot air is less dense than cold air,so when there is a relative temperature difference the hotter air rises in a process known as convection. Schlieren photography is a way of visualising density changes in transparent fluids. Light passing through a density change is refracted (bent). The imaging technique alters the brightness or colour of this refracted light to make such areas visible | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Settles, Dr. Gary |
Taille de l’image : | 2833 px × 2644 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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