Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Jakob Johann Laub (born as Jakub Laub, February 7 1884 in Rzeszów - April 22, 1962 in Fribourg) was a physicist from Austria-Hungary, who is most well known for his work with Albert Einstein in the early period of special relativity. He was the son of Abraham Laub and Anna Maria Schenborn. Laub, who converted from the Jewish to the catholic faith and changed his name from "Jakub" into "Jakob Johann", first visited High School in Rzeszów.