Dec 072011
 

Question by Kasia: What kind of geometry is used when objects in water stick out and form an illusion?
Sorry my question might sound a little confusing…
but what i mean is, say you have a reed in a pond. The part of the reed that sticks out above water looks straight, but the part that is underwater looks diagonal. A lot of straight things make this illusion when you put them in water, even a straw in a cup of soda.
What is this illusion called? and does it use any geometry?

Best answer:

Answer by Ms. Worth
The phenomenon is called “refraction.”

http://en.wikipedia.org/wiki/Refraction

Know better? Leave your own answer in the comments!

  2 Responses to “Q&A: What kind of geometry is used when objects in water stick out and form an illusion?”

  1. I believe it is called refraction. The light in the water refracts the object and makes it look bent. I don’t know about the use of geometry here.

  2. Refraction. Remember, fraction is broke or bent so the “re”fraction, is the same! ( :

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