Lazy Liquids (image) Queen Mary, University of London Caption Queen Mary University of London have set up five bitumen samples in glass tubes with different orifice diameters. Two webcams record the samples by taking the pictures from top and bottom angles every hour. An image is taken at 10am everyday -- this is a photo from the bottom camera taken on Wednesday 25 June. Credit Queen Mary University of London Usage Restrictions Please credit Queen Mary University of London when using the image. 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.