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14 World language English: Past, present and future Lecturer: Prof. Marcus Callies English is the one foreign language that almost all children in Germany learn first at school. In Europe and all over [...] placed on the floor and blows upwards, and a large balloon floats stably above the fan at a height of one meter without being blown off to the side. The experiment can also be carried out with a normal household [...] the Bernoulli effect, which describes the relationship between air flow and pressure. This effect is one of the reasons why an airplane can fly. Duration: approx. 5 minutes The gummy bear in hell Chemistry