Kindergarten was actually a very formalized system of education, established by a man named Friedrich Froebel, who was a crystallographer in the19th century. 幼稚园事实上是非常正式的教育系体之一,是由一位名为福禄.贝尔的人所建立。
Crystallographer Alan Mackay built a model with circles representing atoms at the corners of Penrose's tiles and calculated what sort of diffraction pattern it would produce. 晶体学家阿伦·麦凯利用圆圈代表彭罗斯瓷砖砖角处的原子,建造了一个模型,然后计算了将会产生怎样的一种衍射图案。