A model demonstrates the interactivity of the light installation titled "Pixels Wave 2015" during the media preview of the "Singapore Night Festival" at the National Museum of Singapore on Aug. 19, 2015. Singapore Night Festival will be held over 2 weekends on Aug. 21, 22, 28 and 29 around Singapore's Bras Basah district.(Xinhua/Then Chih Wey)
