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Rutherfordium is a chemical element with symbol Rf and atomic number 104, named in honor of physicist Ernest Rutherford.
The history of radar will show that it began in 1904. German engineer Christian Hulsmeyer created an apparatus capable of detecting an objectâs presence some distance away. However, no single scientist invented the modern radar; scientists from several nations worked on it, especially during the 1930s and 40s.ulsmeyer received a patent for his invention in 1904. However it was Nikola Tesla who discovered that frequency could be used to detect the presence of vehicles as well as their course. The succeeding years saw American and European scientists develop various radar devices.