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11/4/2010 9:21:23 PM
16
Why can we see through bubbles yet they still cast a shadow?
Try this for yourself, it is really weird.
A shadow is caused by light being blocked by an object, right? And we see things because light reflects off of them and into our retinas. So why are bubbles transparent (or glass, for that matter) yet they still cast a shadow? This works in and out of water, so light refraction isn't the answer.
[Edited on 11.04.2010 1:22 PM PDT]
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Bubbles (and glass for that matter) are not perfectly transparent.
