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Title: Hot and cold goblets

Description: This schlieren photograph shows that air coming in contact with a goblet filled with warm water warms up and rises as a result of increase in temperature. In the lower picture, the goblet was simply filled with coffee out of a freshly made pot of coffee from a coffeemaker for making its surface hot (left), and with ice and water to make its surface cold (right). For more photographs by Andrew Davidhazy, see his Exhibits.

Credits: Andrew Davidhazy


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