Figure 3 (IMAGE) Shinshu University Caption (a) Polarizing microscopy image of carbonized coal tar pitch prepared in the absence and presence of magnetic fields of 2?T and 10?T. All figures show the diagonal position and extinction position. (b) Schematic drawing of a magnetic field effect on the carbonization process of coal tar pitch. Credit Copyright 2019, Springer Nature, Licensed under CC BY 4.0 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.