What sort of music do you listen to? albuterol inhalers for sale names During Foucalt’s life it was already proven that the Earth rotated, thanks to experiments which showed that weights dropped from tall towers fell slightly to one side rather than straight down. This is the Coriolis Effect in action. Essentially, the weight does fall in a straight line towards the centre of the Earth, as you would expect, but the Earth rotates slightly during its fall. It is the tower and the ground which move sideways, not the weight.