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Li - Dynamic Form in Nature

16 17 concentrA propagation around centres Apart from their rich colouring, what is the real appeal of semiprecious stones such as agate top left and lower opposite and malachite top right opposite To say that they are inherently beautiful simply begs the question why do we find such formations attractive The intricate concentric configurations found in these and other stones derive from gradual and complex processes of diffusion, of water seepage and crystalline activity. Much of the colour and the tonal variation are the result of impurities in the accumulating layers and of competition between rival centres of crystal growth. Most importantly, the details of all this activity which has occured in a time and place remote from us are revealed in sharply defined forms. The waves and spirals below resulting from the diffusion process of the famous BelousovZhabotinsky chemical reaction, content to merrily oscillate away in their dish without any reference to ourselves, are engaging for much the same reason.
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