Spanish designer Oscar Diaz has created the Ink Calendar, an interesting concept calendar that uses the capillary action of ink spreading across paper to display the date.


You start off at the beginning of each month by dipping the calendar's special paper into a full ink well. As time goes, you'll slowly be able to see the ink spreading across the paper, which is embossed with numbers that represent the days of the month, to reveal the date.


Each month, a different colored ink is used, ranging from green in the spring, orange and red during the summer, and shades of blue in winter.

This concept design is currently being displayed at the Circulo de Bellas Artes exhibition in Madrid.


Articles: Dezeen, Geeky Gadgets, DVICE