- Piskač V.: Amateur Astronomy with a Camera, Fair 14, Brno 2009
The purpose of this contribution is to show some of the opportunities offered by today’s technology (i.e. digital camera combined with a computer) in observation of phenomena on the sky.
- Piskač V.: Heating of Conductor by Electric Current, Fair 11, Olomouc 2006
This contribution describes self-explanatory experiments specialized in heat effect of a current flow, and in dependence of the wire resistance on its temperature.
- Piskač V.: Ice – The Physicist’s friend, Fair 10, Praha 2005
A description of some water and ice anomalies and interesting demonstrative experiments – the change in volume during melting and freezing, relegation of ice, progression of freezing of water in a container, and polarization properties of ice.
- Piskač V.: Three new experiments, Fair 12, Praha 2007
The first part of this contribution is a demonstrative experiment –a light bulb rheostat changes a current in a circuit. The second part deals with acoustic devices (Seebeck siren and monochord), demonstrated by electromagnetic detectors.