When the water turns as a writing medium

Who would have imagined that one can write about water a day? We all know that water is a liquid, it can not be frozen, use it to write messages statement then the impossible. But scientists have met this challenge by developing the experiences to write symbols on the water. Panorama of the different techniques developed.

The concept of hydroglyphes
During a demonstration, scientists from Harvard and the Merrimack High School students presented a quite amazing concept that allows to write actually with water and that the scientists have named "hydroglyphes". During the experiment, the participants placed a self-adhesive foam (in the form of a letter of the alphabet, for example) on the bottom of a box of Petri dishes. However, this last is inherently hydrophobic, meaning that it tends to repel water. Once the foam is placed, the experimenters have installed container under a Tesla coil. This device allows to achieve very high electrical voltages then causing a purple spark accompanied by a noise loud enough. This operation makes the driver air and pushes oxygen to combine with the plastic material. The surface of the plate is then hydrophilic (water attracting)... except obviously the surface obscured by the adhesive shape (which is then removed). The message is thus printed in water and may remain so for 1 month...

The principle of standing waves
Another way to use the water for recreational purposes, the AMOEBA (Advanced Multiple Organized Experimental Basin) device dating back to 1997 that is to surround 50 generators of waves in a pool. These generators work just moving up and down a controlled manner to give a particular form in the water thanks to the cylindrical waves that form pixels. These pixels are combined to form all the letters of the alphabet or symbols. This technique could find its way into fun as arts such as amusement parks.

A cascade of words
In the same idea, Julius Popp, an artist as recognized in the field of the art in scientific research has discovered the existence of sensors for dropping water droplets to write the words in the air through a screen liquid where every drop of water becomes pixel. Assembly and the rate of fall of drops of water to form letters, words that scroll as a generic without end. Signs that become messages and random slogans fade one after the other... A beautiful cascade of words.