Public talk (in German) “Gravitationswellen – Neuigkeiten aus dem Universum”
- Date: Sep 28, 2021
- Time: 02:00 PM - 02:45 PM (Local Time Germany)
- Speaker: Michèle Heurs
- Location: Uni Würzburg
- Room: Audimax
- Host: Highlights der Physik
Nothing was heard of the Big Bang, at the beginning of the universe about 13.8 billion years ago ... or was it? When large masses are accelerated - for example, when stars orbit each other or explode, or when black holes collide - no sound waves are generated, but “gravitational waves” are. Albert Einstein predicted the existence of these waves more than a hundred years ago, and scientists have had no doubts about their existence for decades - but for a long time they could not be heard. In September 2015, an international research team succeeded for the first time in directly detecting these tiny distortions of space-time and making them audible, as well as winning a Nobel Prize for it. Since then, the age of multi-messenger gravitational wave astronomy has truly begun. This lecture will show which functional principles underlie a gravitational wave detector, which technical and quantum mechanical tricks science has to use for this purpose, and what kind of knowledge about our universe can be gained from it.