1858
Richard Dixon Oldham, English seismologist and geologist (died 1936)
Richard Dixon Oldham, English seismologist and geologist (died 1936)
Richard Dixon Oldham, English seismologist and geologist (died 1936)
Richard Dixon Oldham
British geologist
- Born
- 1858
Richard Dixon Oldham FRS was a British geologist who made the first clear identification of the separate arrivals of P-waves, S-waves and surface waves on seismograms and the first clear evidence that the Earth has a central core.