Uliana told about his very strict school teacher. She was a tall, slightly haughty young woman. One fine day teacher told the foundations of physics. In the classroom hung and lying on the floor colorful balloons. The teacher took the balloon and painted a pen on it, explaining about the air pressure inside the shell. As an example, she puncturing balloons, sit pop, and also squeezing them to burst. Uliana do not remembered of the story of his teacher about the laws of physics, and remembered a bunch bursted balloons and she reproduced this episode in this clip.1280:720. MP4.