Uncover Reality | From Science to Space on Instagram: "Tiny Ion Exchange Resin Beads May Allow You to Write in Water For centuries, writing has always required a solid surface—stone, clay, paper, or screens. But a team of researchers from Johannes Gutenberg University Mainz and TU Darmstadt has shown that even water can become a writing medium, thanks to tiny ion exchange resin beads. In their experiment, ink particles were placed directly in water. A microbead, just 20–50 microns wide, was used