Correction

May 2021, page 27 —The building in the photo is erroneously identified as Cambridge University’s Cavendish Laboratory. In fact, in Ernest Rutherford’s day, the photographed building housed the department of engineering’s Electrical Laboratory, which was later subsumed into the department of physical chemistry. Today the building houses the department of history and philosophy of science and the Whipple Museum of the History of Science. Below is the actual entrance to the Cavendish. (Photo by R. T. Phillips.)