WATERLENS

I have studied the properties of the medium water. I was most inspired by the property of light refraction. This means that the incoming beam of light is refracted in water and emitted at a different angle. If the water is brought into the shape of an exact sphere, the incoming light is bundled onto the focus.
I wanted to work with this function and I put it in a drinking bottle. I placed the sphere in the upper part so that it is handy and works well as a drinking bottle.