Wilhelm Conrad Roentgen was born on March 27, 1845 in a merchant family in Lennep of Prussia. While Wilhelm was three year-old, because of turmoil in Prussia the family emigrated to Holland where he enjoyed a peaceful and happy childhood that he acquired a love of outdoor life. In 1862, Roentgen registered at the Utrecht Technical School and lived in the pleasant home of J. W. Gunning, professor of chemistry. This cultured family provided the young Roentgen with good inspiration and direction to the right path of life. Unfortunately, Roentgen was expelled from the school at his 17 and that would prevent him entering the university. After two years of struggle, he was admitted to the Zurich Polytechnic, Switzerland where he acquainted with his future wife Anna Bertha Ludwig and then graduated with the Diploma in Mechanical Engineering. 1869 Roentgen was awarded his Doctorate of Philosophy degree with a thesis ”Studies on Gases”. Afterward, he remained in the graduate school as research assistant of Mr. August Kundt, a physics experimentalist.