Author Topic: The world above the water surface, as seen by a fish  (Read 213748 times)

GolfBallJuggler

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Re: The world above the water surface, as seen by a fish
« Reply #15 on: April 21, 2013, 10:13:29 am »
How do I run this program offline...

Fu-Kwun Hwang

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Re: The world above the water surface, as seen by a fish
« Reply #16 on: April 21, 2013, 02:11:49 pm »
Did you find "get file for offline use button"?

Download file, unzip it and open index.html with your browser.

tosraj

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Re: The world above the water surface, as seen by a fish
« Reply #17 on: May 13, 2013, 08:40:49 pm »
I don't understand as to why light enters the water only through the yellow region. I understand that beyond the yellow region, the reflected bottom of the pool will be seen (green rays in figure below), but wouldn't it be a dim (less bright) compared to the light entering the water from the air (red rays in figure below) and reaching the fish? I assume a infinite or very large pond here (not an aquarium where light may enter from the sides too) so that the reflected light from the bottom of the pond is quite dim. Hence the fish must see the outside world superimposed with a dim reflection of the bottom of the pond. Where am I going wrong?

Thanks in advance for your reply and for your great post.


susanrichard

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Re: The world above the water surface, as seen by a fish
« Reply #18 on: September 10, 2016, 06:04:28 pm »
I was looking at your applet for the thin lens and really liked it. I am new to applets and
often it is possible to download them so that you can use them off line but I couldn't
work out what to do to download your applet.
I am a secondary teacher and would really like to show it to my students. Would I be
able to get a copy of it please. -*-

Fu-Kwun Hwang

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Re: The world above the water surface, as seen by a fish
« Reply #19 on: September 11, 2016, 06:16:48 pm »
Just click get file for offline use button to download jar file.

susanrichard

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Re: The world above the water surface, as seen by a fish
« Reply #20 on: September 11, 2016, 07:41:47 pm »
ok got it!! thanks for the answer. -*-