Diagramm (IMAGE) Johannes Gutenberg Universitaet Mainz Caption Funktionsschema "Schreiben unter Wasser": Der Stift zieht die Tinte an, überschüssige Tinte bleibt als Spur zurück. Credit Abb./©: Thomas Palberg Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.