Showphysics 09

Session

Exchanging experiments

3 Apr 2009, 11:00

Auditoire Stuckelberg (Université de Genève)

28. The wave-particle duality of light

Prof. Antoine Weis

03/04/2009, 11:00

A Mach-Zehnder interferometer (MZI) operated by single photons with photomultiplier detection and oscilloscope and acoustic display is used to demonstrate that light behaves simultaneously as particles and as waves. By averaging single photon events registered by a digital oscilloscope one sees the emergence of the classical fringe pattern.

29. Showing the invisible: inertia, gas and waves

Ms Gabriele Calza

03/04/2009, 11:30

We are members of the Laboratory for Physical Sciences Communication in Trento University; it has been set up in 2002 by Prof. Stefano Oss and it aims to research new educational tools for science. So we are here to present a small example of our activity and to learn, of course! You’ll feel directly on your skin the difference between weight and mass with a huge inflated balloon! You’ll be...

30. Optical tweezing

Dr Luigi Bonacina

03/04/2009, 12:00

Since its first demonstration, optical tweezing, i.e. the capability of manipulating objects on the micro- and nano-metric scale by a focused laser beam exerting a force depending on the refractive index mismatch between the object and its surrounding, has raised a growing interest from many fields of research: physics, biology, medicine, material science, etc. In order to demonstrate the...