Fig. 1. (image) Moscow Institute of Physics and Technology Share Print E-Mail Caption Tarski proved that a circle with a radius of one cannot be completely covered by strips whose combined width is smaller than two -- the circle's diameter. Each of the strips in the image has its own length and color. Credit MIPT Press Office 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.