Nobel Prizes and Laureates

Nobel Prizes and Laureates

The Nobel Prize in Physics 2005
Roy J. Glauber, John L. Hall, Theodor W. Hänsch

Share this:

Theodor W. Hänsch - Nobel Lecture

Passion for Precision

Theodor W. Hänsch held his Nobel Lecture December 8, 2005, at Aula Magna, Stockholm University. He was presented by Professor Sune Svanberg, Chairman of the Nobel Committee for Physics. Summary: Development of the frequency comb technique, which allows very high resolution of optical frequencies, began in the 1970s. A breakthrough came in 1999 with a laser-based optical frequency comb synthesizer, which has a very high uniformity. This allowed the accuracy of clocks to improve markedly; from about one second per day in the year 1800 to about one picosecond per day in 2000. A review is given here of the applications of improved atomic clocks.

See a Video of the Nobel Lecture
49 sec.
Nobel Lecture
44 min.

Lecture Slides
Pdf 9.58 MB

To read the text you need Acrobat Reader.


Read the Nobel Lecture
Pdf 145 kB
Copyright © The Nobel Foundation 2005

From Les Prix Nobel. The Nobel Prizes 2005, Editor Karl Grandin, [Nobel Foundation], Stockholm, 2006

To read the text you need Acrobat Reader.


Share this:
To cite this page
MLA style: "Theodor W. Hänsch - Nobel Lecture: Passion for Precision". Nobel Media AB 2014. Web. 18 Mar 2018. <>