ScienceTechnologistas

TOP-TEN SECRETS OF MARJORIE JOYNER (NÉE STEWART; OCTOBER 24, 1896 – DECEMBER 27, 1994) AND HER INVENTIONS

Marjorie Joyner is a name that may not be familiar to many, but her contributions to the beauty industry have had a lasting impact. Born in 1896, Joyner was a trailblazer in her time, breaking racial barriers and creating innovative products that are still used today. Her most notable invention was the permanent wave machine, an innovation that revolutionized the beauty industry and made it…
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TOP-10 SECRETS YOU NEVER KNEW ABOUT NIKOLA TESLA

Top-Ten Secrets of Charles R. Drew (1904- 1950) and his Inventions