In this lecture Martinus Veltman has chosen to speak about the development of Partical Physics starting with the discovery of X-rays (Röntgen rays) by Röntgen.
Video lecture recorded in 2004. Martinus J.F. Veltman, the Netherlands shared the Nobel Prize in Physics in 1999 with Gerardus `t Hooft the Netherlands "for elucidating the quantum structure of electroweak interactions in physics"