Materials having a negative Poisson's ratio (auxetic) get fatter rather than thinner when uniaxially stretched. This phenomenon has been often explained through models that describe how particular ...
Now you too can frighten children and pets, thanks to Sheng-Hung Hsu and Andrew G. Avinger's Rotating Inflatable Ornament, the recent recipient of U.S. Patent 7,267,851. Designed to "create excitement ...
These reflected rectangles are example of congruent shapes. When transforming a shape, either through translation, reflection or rotation, a congruent shape is produced. Enlargements create shapes ...
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