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Figure 5
De Boodt, Kepler, Hooke, Huygens and Stensen considered the cause of the crystal shapes to lie within the crystal: stacks of particles, layering of planes, as can be shown by using educational pyramids. Source: Voyage dans le cristal; adapted from Johannes Kepler (1611 ), Strena Seu de Nive Sexangula; Christiaan Huygens (1690 ), Opera Reliqua. |


journal menu![[Figure 5]](kk5194fig5.jpg)




