Scottish-born chemist and physicist who studied the liquefaction of gases and the properties of matter at very low temperatures and invented cordite(1889) with Sir Frederick Abel.

• 德瓦，詹姆斯1842－1923出生于苏格兰的化学家和物理学家，研究气体的液析和物质在超低温下的特性，于1889年和弗雷克·艾贝尔先生一起发明了无烟火药。