对称，是均衡与和谐的体现，堪称中国人钟爱的美学理念。从宫殿到园林，中国建筑广泛应用中轴对称，呈现秩序美感。Symmetry represents balance and harmony. It is a deeply cherished ...

In the mathematical sense, an object has rotational symmetry if there is an axis around which you can spin it so that at the end of a less-than-complete rotation, it looks just the same as it did ...

Initially, when the crack velocity is relatively low, propagation is nearly symmetric, with only occasional small deviations from the symmetry axis. As the crack accelerates, larger deviations ...

Mathematically, such objects are described as exhibiting rotational symmetry, for being “invariant under rotation.” Such objects have a point (in 2-D) or an axis (in 3-D) about which an object ...

This jingle has helped generations of algebra students recall the quadratic formula that solves every equation of the form $latex ax^2+bx+c=0$. The formula is as ...

In this high-force regime, disorder once again played a minor role. The deviation of cracks from their symmetry axis and the formation of branches come at an energetic cost: A larger amount of ...

By Kate Golembiewski Symmetry runs rampant in nature. It’s present wherever mirror images are repeated, like in the right and left halves of elephants or butterflies, or in the repeating ...