Hedy Lemarr, an actress who was regularly described as the "most beautiful woman in Europe", was also a mathematician and inventor. She was the inventor of the Frequency Hopping Spread Spectrum, used in your bluetooth and wifi.
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Lina Cavalieri, was considered one of the most beautiful women in the world. As a young girl, she ran from the orphanage with a theatre group, made career as a singer first in Paris and soon all around Europe. In 1900 she debuted as opera singer .