Asymmetry is the absence of, or a violation of, symmetry (the property of an object being invariant to a transformation, such as reflection).ymmetry is one of the most powerful tools in particle physics, because it has become evident that practically all laws of nature originate in symmetries. Violations of symmetry therefore present theoretical and experimental puzzles that lead to a deeper understanding of nature.
John Fitzgerald Jack Kennedy (May 29, 1917 â November 22, 1963), commonly referred to by his initials JFK, was an American politician who served as the 35th President of the United States from January 1961 until his assassination in November 1963.
Politics of the United States of America. John F. Kennedy. JFK was the youngest elected president to the office at the age of 43 years 236 days. He was also the youngest to leave the office at the age of 46 years, when he was assassinated. Also, Theodore âTeddyâ Roosevelt was the youngest person to become the president at the age of 42 when he assumed the office following the assassination of William McKinley.