It was therefore quite surprising when John William Strut (Lord Rayleigh), discovered a gaseous element in 1894 that did not fit into the previous classification scheme.

因此，当约翰·威廉·斯特拉特（瑞利勋爵）于1894年发现了一种不符合先前分类方案的气体元素时，人们感到相当惊讶。