Light Accelerating (video) University of the Witwatersrand Share Print E-Mail Loading video... Caption Researchers at the University of the Witwatersrand in Johannesburg have demonstrated that laser light traveling along a helical path through space, can accelerate and decelerate as it spins into the distance. Here the light is accelerating. Credit Andrew Forbes/Wits University 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.