Trumpet (1 of 2) (IMAGE) Swedish Research Council Caption This image is taken perpendicularly to the paper, which is illuminated in 45 degree angle. The light penetrates into the paper and meets the inks, some wavelengths are absorbed and the light that reaches the camera carries the color information from the image. Credit Expertsvar Usage Restrictions None License Licensed content 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.