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Treasure Hunting
Treasure, Coin and Relic
iridescent lamination in bottles
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<blockquote data-quote="pulsetrain" data-source="post: 640568" data-attributes="member: 19606"><p>I'm guessing the brown colour on the flakes is just dirt and that there aren't any specific elements responsible for the colours.</p><p>"Thin film interference" is probably the effect that is visible.</p><p></p><p>[MEDIA=youtube]xjMjWtntm9k[/MEDIA]</p><p></p><p>As for the mirror effect, I'd guess it's due to the inconsistent thickness of the delaminated glass... ridges, pits etc. and there being multiple spots with the right thickness to reflect most wavelengths of visible light.</p><p></p><p>Here is a bottle I found last year at the beach.</p><p>It still contains the original seawater and is mostly full of sand which has prevented a lot of the delaminated glass flaking off. It has some fantastic colours, reminds me of an opal.</p><p></p><p>[ATTACH=full]836[/ATTACH]</p><p>[ATTACH=full]837[/ATTACH]</p><p>[ATTACH=full]838[/ATTACH]</p></blockquote><p></p>
[QUOTE="pulsetrain, post: 640568, member: 19606"] I'm guessing the brown colour on the flakes is just dirt and that there aren't any specific elements responsible for the colours. "Thin film interference" is probably the effect that is visible. [MEDIA=youtube]xjMjWtntm9k[/MEDIA] As for the mirror effect, I'd guess it's due to the inconsistent thickness of the delaminated glass... ridges, pits etc. and there being multiple spots with the right thickness to reflect most wavelengths of visible light. Here is a bottle I found last year at the beach. It still contains the original seawater and is mostly full of sand which has prevented a lot of the delaminated glass flaking off. It has some fantastic colours, reminds me of an opal. [ATTACH type="full"]836[/ATTACH] [ATTACH type="full"]837[/ATTACH] [ATTACH type="full"]838[/ATTACH] [/QUOTE]
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Treasure Hunting
Treasure, Coin and Relic
iridescent lamination in bottles
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