(IMAGE) Tohoku University Caption This is a photograph of THz imaging of PC steel cable corresponding to the sealed and unsealed parts of the cable. Polyethylene outer mold was partially removed. Credit Yutaka Oyama Usage Restrictions Credit: Yutaka Oyama 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.