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The Walrus - - RIPPLE EFFECT -

1. The spi­ral form of a fos­sil am­monite.

2. Ici­cles grown with in­creas­ing amounts of added salt grow larger rip­ples.

3. The swirl of liq­uid crys­tal with a volt­age ap­plied across it.

4. The Belousovzhabotin­sky re­ac­tion, a non­lin­ear, os­cil­la­tory chem­i­cal re­ac­tion tak­ing place in a petri dish.

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