Beautiful project in which we have learned that the renovation can be very capricious..
Refraction is the change of direction experienced by a wave passing a material medium to another..
An example of this phenomenon is seen when a pencil immersed in a glass of water , appears broken pencil..
Mirages are produced by an extreme case refraction, called total reflection.
Although the phenomenon of refraction is frequently observed in electromagnetic waves such as light,
the concept is applicable to any type of wave.
Here's the example.. Barcelona Water.