Applied physics and the hummingbird.

Discussion in 'Physics & Math' started by wellwisher, Jun 15, 2013.

  1. wellwisher Banned Banned

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    An interesting observation about many species of hummingbirds is they can alter their feather colors. They do this by light interference and refraction instead of light emitting cells. Their feathers are hollow and by altering the angle at which the ambient light hits the feathers they can refract the light into different colors including iridescent colors; natural applied physics.

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  3. wallarookiller Registered Senior Member

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    I didn't even know that they did that. They all seem the same color where I'm from. Pretty cool.
     
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  5. Read-Only Valued Senior Member

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    And they aren't the only ones - even common crows' feathers display iridescent colors.

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