NZ Lifestyle Block - - Your Poultry -

of a pea­cock are made up of mi­cro­scopic, two-di­men­sional crys­tals, hun­dreds of times thin­ner than a hu­man hair. The crys­tals re­peat but vari­a­tions in spac­ings cause light to re­flect in dif­fer­ent ways, giv­ing the feath­ers their vi­brant, flu­o­res­cent colours.

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