The new International System of Units (SI units) will be based on constants of nature which are the most stable quantities, suggested Professor Dr Klaus von Klitzing at a distinguished lecture held by the Institute for Advanced Study at City University of Hong Kong (CityU) on 28 July.

Klaus von Klitzing 教授7月28日为香港城市大学（城大）高等研究院主持杰出讲座，提出新的国际单位制将建基于数量最稳定的自然常数。