The movement of a solvent through a membrane separating two solutions of different concentrations. The solvent from the side of weaker concentration usually moves to the side of the stronger concentration, diluting it, until the concentrations of the solutions are equal on both sides of the membrane.
We manage Trafalgar Square, one of Londonâs most vibrant spaces in the middle of the city. Find out about the history of this heritage site, its statues and its fountains.
In 1904, the New York Times built the Times Tower on 43rd street just off Broadway to replace its downtown premises. The square in front of the building was called Longacre square, but was soon renamed Times Square. The name is now used for the area between 40th and 53rd street and 6th and 9th avenue.