Richter BrE AmE ˈrɪkt ə ˈrɪxt- AmE - ə r —German [ ˈʁɪç tɐ ] , Russian [ ˈɾʲix tʲɪɾ ] —Charles R~, the seismologist, was an American; it is therefore appropriate for the Richter scale he devised to be pronounced in an English way, with [ k ] . Nevertheless, in British English it is often said with [ x ] .
RICHTER
Meaning of RICHTER in English
Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012