question: Who developed a device that improved on the shortcomings of Scheiner 's invention ?
answer: Austrian scientist Josef Maria Eder ( 1855 -- 1944 ) and Flemish-born botanist Walter Hecht ( de )
turker_answer: The Austrian scientist , Josef Maria Eder ( 1855 -- 1944 ) and Flemish-born botanist Walter Hecht ( de ) developed a device that improved on the shortcomings of Scheiner 's invention .
rule-based: Austrian scientist Josef Maria Eder ( 1855 -- 1944 ) and Flemish-born botanist Walter Hecht ( de developed a device that improved on the shortcomings of Scheiner 's invention .