International Young Physicists' Tournament

International Young Physicists' Tournament (IYPT), is one of the most prestigious international physics contests among high school students. This book is based on the solutions of 2014 IYPT problems. The authors are undergraduate students who participated in the CUPT (Chinese Undergraduate Physics Tournament). It is intended as a college level solution to the challenging open-ended problems. It provides original, quantitative solutions in fulfilling seemingly impossible tasks. This book is not limited to the tasks required by the problems and it is not confined to the models and methods in present literatures. Many of the articles include modification and extension to existing models in references, or derivation and computation based on fundamental physics. This book provides quantitative solutions to practical problems in everyday life. This is a good reference book for undergraduates, advanced high-school students, physics educators and curious public interested in the intriguing phenomena in daily life. List of supplementary materials: More solutions not included in the book: Solution to problem 4. Ball sound (2 MB) Solution to problem 13. Rotating saddle (2 MB) Solution to problem 14. Rubber motor (3 MB) Others: Problem 2: Hologram Video1, IYPT display (16 MB) Video2, parallax of real objects (1 MB) Video3, parallax of 'hologram' image (14 MB) Problem 3: Twisted Rope Video1, twist process of a silicon gel rope (twisted 8 rounds) (16 MB) Video2, twist process of a multi-strand rope (twisted 20 rounds) (17 MB) Problem 6: Bubble crystal Video 1, the attraction of two bubbles (4 MB) Video 2, bubble crystal formation (1 MB) Video 3, vacancy and replacement (1 MB) Problem 8: Freezing droplets Video1, freezing of water droplets (10 MB) Video2, freezing of a paraffin droplet (9 MB) Problem 10: Coefficient of diffusion Video1, Diffusion of particles (3 MB) Source Code, The full set of program we used in experiment (2 MB) Problem 12: Cold balloon Video1, sphere.avi: Change of strain energy density distribution of a spherical balloon. The lower part has a larger deformation so that the temperature increase is larger. The color scale is the same as in Fig. 13. Red indicates larger energy density, blue the smaller one. (17 MB) Video2, realballoon.avi: Change of strain energy density distribution of a real balloon. The color scale is the same as in Fig. 15. Red indicates larger energy density and larger temperature increase, blue for smaller change. (17 MB) Problem 15: Oil Stars Video1, six-crests.mov: stable faraday waves of six crests (2 MB) Video2, one-and-two crests.gif: faraday waves of one and two crests (1 MB) Video3, three-crests.gif: faraday waves of three crests (1 MB) Video4, four-crests.gif: faraday waves of four crests (1 MB) Request Inspection Copy