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gems

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PostSubject: Butterfly   Thu Apr 25, 2013 11:30 am




The True Color of Glasswings...!

Most other butterflies have colored scales which pattern the wings, quite often to ward off predators. The glasswing has another way of doing this entirely, but over the millennia it has evolved these specific wings to hide itself from predators rather than to warn them off. Transparency in nature is not something that has been very well understood. In order to achieve transparency the tissue must not absorb light. Neither can it scatter light, as this is the major obstacle to being see-through.

The wings of the glasswing must, therefore, have the same refractive index all the way through them as otherwise this transparency could not possibly occur. It is thought (a postulation at the moment rather than sure fire fact) that the surface of the wing has a covering of protrusions that are so small they can be called submicroscopic. They have a single refractive index and so do not scatter light, so making the wings transparent.

The glasswing is one especially strong species of butterfly. Although it might look weak, it has the ability to carry nearly 40 times its own weight. It is also very fast, with the ability to fly up to eight miles per hour for short periods of time.



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Gaga

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PostSubject: Re: Butterfly   Thu Apr 25, 2013 12:39 pm

beautiful xx

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PostSubject: Re: Butterfly   Thu Apr 25, 2013 12:51 pm

Stunning x
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PostSubject: Re: Butterfly   Fri Apr 26, 2013 7:58 pm

i love butterflies....
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