Physical demonstrations
Physical demonstrations, especially nontrivial ones, can arouse amusement and then the interest in studying a specific phenomenon. In this kind of demonstration experiments, one has to understand the nature of a phenomenon and single out the main factor of its origin. The experiments listed below ("zested experiments") are conductive to the formation of pupils' scientific thinking and outlook.
1. Experiments based on the surface tension of liquids (a "floating sieve," cohesion of glass plates, etc.). Video 1 (9Ìb), video 2 (21Ìb).
2. Thermal auto-oscillator of sound frequencies. Demonstration of the structure of a water jet in a stroboscopic illumination.
3. Full reflection in the "Black Ball" experiment. Video (15Ìb).
4. Electrolyte rotation in a magnetic field. Video (14Ìb).
5. Experiments using a vacuum facility: a manifestation of the atmospheric pressure force, cold water boiling, etc.
6. Specifics of the light refraction in different media. Video (25Ìb).
7. Studying the air diffusion through a soap bubble.
8. Loss of a body's floatation (an "anti-Archimedes installation"). Video (11Ìb).
9. Modulation of a standing wave in a metallic string by a constant magnetic field. Video (14Ìb).
10. The light interference with thin films.
11. The light diffraction on fog drops in a retort.
12. Demonstration of the resonance phenomenon using a sound tube.
13. Studying of the soap ships movement. Video (7Ìb).
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