3 scientists share 2019 Nobel Prize in Physics

Ulf Danielsson, a member of the Nobel Committee for Physics, adds sugar to a cup of coffee as he makes an explanation at the announcement of the 2019 Nobel Prize in Physics in Stockholm, Sweden, Oct. 8, 2019. The 2019 Nobel Prize in Physics are shared by three scientists, the Royal Academy of Sciences in Stockholm announced on Tuesday. (Xinhua/Zheng Huansong)