In projective geometry, Plücker coordinates refer to a set of homogeneous co-ordinates introduced initially to embed the set of lines in three dimensions as a quadric in five dimensions.
Julius Caesar | Pope Julius II | William Julius Wilson | Julius Caesar (play) | Julius Rudel | John Julius Angerstein | Julius Francis | Julius | Julius Hemphill | Julius Wellhausen | Julius von Pflugk-Harttung | Julius Rosenwald | Julius Nyerere | Julius Erving | Julius Baker | Julius and Ethel Rosenberg | Otto Julius Bierbaum | Julius Wernher | Julius Weise | Julius Streicher | Julius Sachs | Julius Peppers | Julius Oppert | Julius Katchen | Julius Evola | Julius Caesar Scaliger | Johann Friedrich Julius Schmidt | Drusus Julius Caesar | Pope Julius III | Pope Julius I |
It was used by Crookes, Johann Hittorf, Julius Plücker, Eugen Goldstein, Heinrich Hertz, Philipp Lenard and others to discover the properties of cathode rays, culminating in J.J. Thomson's 1897 identification of cathode rays as negatively charged particles, which were later named electrons.