Subject: Re: You use different lenses underwater because the speed of light is different
> Dave Hillstrom wrote:
> > You can't use regular lenses underwater, that's why you always see
> > special cameras on ocean documentaries and such. People think it's
> > because they need to be waterproof but the real reason is the speed of
> > light underwater is different than in air and it makes the light bend
> > at different angles through the lenses.
> > Einstein proved it.
> So your thinking is that before Einstein people did not know about
I'd like to see what happens when he takes his non-waterproof camera with
the special underwater lens on a dive,
Should get some nice pics.
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You use different lenses underwater because the speed of light is different =>Re: You use different lenses underwater because the speed of light is different =>
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