Nowakowska, H. [1]; Karwasz, G. [2,3] ([1] Institute of Fluid Flow Machinery, Polish Academy of Sciences, Gdansk, Poland; [2] Facoltá di Ingengeria, University di Trento, Trento, Italy; [3] Institute of Physics, Pomeranian Pedagogical Academy, Slupsk, Poland)

A 01

Quantum scattering with Excel
Ramsauer and Kollath in a pioneer experiment in 1931 in Berlin-Reinickendorf noticed complex dependences for angular distributions in electron scattering on atoms. The wave quantum mechanics describes the incident electron plane-wave as a sum of partial waves with quantified momentum and the differential cross section as a series of Legendre polynomials.

We present an easy macro written in MS Excel allowing to chose by "potentiometers" the angle of the phase shift and the normalization of the experiment. We apply this model to electron and positron scattering on argon atoms. One sees immediately how "diffraction" patterns appear in differential cross sections.  

 

 

 

Rajch, E.; Wròblewski, T.; Kaminska, A.; Bigus, W.; Karwasz, G. (Institute of Physics, Pomeranian Pedagogical Academy, Slupsk, Poland)

B 06

Making toys multimedia - magnetism
Physical toys prove to a cheap and fast tool in didactics. We started some time ago with general exhibition both in schools as scientific fora, then we moved to thematic collections of toys, like sound sources ("Making sounds multimedia", MPTL9). Now, we collected these works in web-site and on a CD-ROM. In Berlin we present both real objects and multimedia description of toys and tools on magnetism.  http://physics-toys.pap.edu.pl/ (in Polish) http://modern.pap.edu.pl/

 

 

 

Wròblewski, T.[1]; Rajch, E.[1]; Niedzicka, A.[2]; Brunato, M. [3]; Karwasz, G [1]. ([1] Institute of Physics, Pomeranian Pedagogical Academy, Slupsk, Poland; [2] Ambernet, Warszawa, Poland; [3] Dipartimento di Informatica, Università di Trento, Italy)

B 07

Physics of Funnels and Quarks (General relativity theory and elementary particles)
With some imagination one can illustrate magnetic domains, eddy currents and magnetic poles. But how to show quarks? Electrons are small balls, proton is a small ball and quarks as well. If you are fed-up with colour balls, please imagine quarks as small, running wolves (2004 Nobel prize winner is Frank Wilczek, what means "wolf" in Polish). Then, it is easy to illustrate the charge, strangeness, and mass of quarks. Funnels serve to show closed (Kepler's) and open (Einstein's) orbits in gravitational field. http://modern.pap.edu.pl/