Microspheres Changing Color (video) University of California - Riverside Share Print E-Mail Loading video... Caption This video shows the rotation of microspheres in a vertically changing external magnetic field. The color is switched between on (green) and off states. Both movies, taken at different magnifications, were shot using an optical microscope. They show switching of color of the magnetochromatic microspheres, accomplished by simply changing their orientation with the use of a magnet. Credit Yin lab, UC Riverside. Usage Restrictions None Share Print E-Mail 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.