That work created a word for a type of machine.
This author's work about opera singer Emilia Singer and was adopted into an opera by Leoš Janácek (YAHN a check). Another sees Captain van Toch discover the title creatures and focuses on Mr. Povondra. Those two works are this author's The Makropulos Affair and (*) War With the Newts. Another of his plays features Helena Glory and Harry Dormin and sees a rebellion led by a group of automatons. That work created a word for a type of machine. For 10 points, name this Czech author who introduced the word "robot" in his play R.U.R..
This author's work about opera singer Emilia Singer and was adopted into an opera by Leoš Janácek (YAHN a check).
Karel {Capek}