Model for demonstrating existence of magnetic force

摘要

The model functions in accordance with the principle of hydro-mechanics and comprises two similar sections, each with a drive (fan (4)) and water pump. It is open on two adjacent sides, and closed on two outer sides. The fluid is made "visible" by the bodies being impelled (down feather, cotton wool, paper shreds, broken plastics, etc.). Each of the two parts of the model comprises a transparent outer cylinder (1), a transparent cover (2) matching the two sides of the outer cylinder, an inner cylinder (3), a fan (4) with power of 30 watts upwards, and supports (5, 6).