#7 Margaret Knight

Inventor, United States

1838-1914

Margaret is has been called "the most famous 19th-century woman inventor." This woman had lot of inventions tailored to her name. In 1868, she invented the technology to make paper bag. Her paper bag machine created the flat bottomed brown paper bags, which we still finds in grocery stores. A man named Charles Annan tried to steal her idea and receive credit saying that a woman can never make such an innovative machine. But she received the patent for it after submitting the original evidences. She also invented the numbering machine and many devices related to rotary engines.

#6 Emmy Noether

Mathematician, Germany

1882-1935

Emmy Noether was described by Albert Einstein as “the most important women in the history of mathematics. “ With her ground breaking contributions to abstract algebra and theoretical physics, she revolutionized the theories of rings, fields and algebras. Her ‘Noether’s Theorem explained certain fundamentals in physics.