page_title: Edith Kroupa
hierarchical_section_title: Edith Kroupa
caption_attribution_description: Austrian research chemist Edith Kroupa, 1934. The original caption dated September 18, 1934, reads: &quot;While revolution upset Vienna, Miss Edith Kroupa, research chemist working with a new method of microchemical analysis in the laboratory of Prof. A. Franke at the University of Vienna, analyzed a sample of radioactive rock from near Winnipeg, Canada,&quot; determining it to be over 1,725,000,000 years old. Earlier that same year, Kroupa and her colleague Friedrich Hecht had discovered triple-weight hydrogen.
context_page_description: Edith Kroupa was a research chemist who utilized microchemical analysis in the laboratory of Professor A. Franke at the University of Vienna.
  In 1930, Kroupa and Friedrich Hecht analyzed a sample of radioactive rock from the Huron Claim, Manitoba near Winnipeg, Manitoba, Canada.
  The team determined the sample to be over 1,725,000,000 years old.
  Also in 1930, Kroupa and her colleague Friedrich Hecht had discovered triple-weight hydrogen, also known as tritium.
context_section_description: Edith Kroupa (1910–1991) was a research chemist who utilized microchemical analysis in the laboratory of Professor A. Franke at the University of Vienna. 
  In 1930, Kroupa and Friedrich Hecht analyzed a sample of radioactive rock from the Huron Claim, Manitoba near Winnipeg, Manitoba, Canada. 
  The team determined the sample to be over 1,725,000,000 years old. 
  Also in 1930, Kroupa and her colleague Friedrich Hecht had discovered triple-weight hydrogen, also known as tritium.
caption: Edith Kroupa, 1934
exif: {}