| 摘要 |
A display device illustrates the ability of a tire which is designed for rain traction to move through a fluid as compared to a standard tire. The display device comprises a sealed rectangular box having a bottom, two sides, two ends and a lid. Pivoting means is associated with the box which is adapted to alternately rotate one end of the box higher than the other. A fluid contained within the box to provide resistance to the movement of objects through the box and means are provided for observing the movement of objects in the box. In the illustrated embodiment, an object made to resemble a standard radial tire, and an object in the shape of a tire with a deep, wide center groove (a rain tire) are enclosed in the box. In its operation, the box is tilted on the pivot so that one end of the box is raised higher than the other, and the objects are observed as they traverse to the lower end of the box.
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