If you imagine yourself tossing a ball in the air in front of a mirror, P symmetry seems intuitively obvious.

想像如果你在镜子前面丢球，P对称看来是无庸置疑的。

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Son waves his arms, ready to beat the ball. But unexpectedly the mirror is broken.

儿子挥动胳膊准备击球，没想到打破了镜子。

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The mirror ball no doubt heaved a sigh of relief as it regained its status as the high diva of disco fever.

那个玻璃球现在肯定是松了一口气，因为它又可以重新主宰迪斯科舞场了。

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Dixon's own brand has yielded quite a few internationally lauded hits, among them the Mirror Ball light (2003), Fresh Fat Chair (2004) and Wingback Chair (2007).

WSJ: Tom Dixon Makes Things Better

The math professor who came up with the "wide angle substantially nondistorting mirror" says it works kind of like a mirrored disco ball -- although it doesn't look anything like one.

CNN: Disco ball-inspired mirror gets rid of driver's blind spot

"Imagine that the mirror's surface is made of many smaller mirrors turned to different angles, like a disco ball, " said R.

CNN: Disco ball-inspired mirror gets rid of driver's blind spot