Valerie Thomas is an African-American Physicist and Mathematician. She is the inventor of the Illusion Transmitter (improving television screen) as well as a lead project manager for one of NASA’s most utilized technologies - Landsat satellite series, which serve the purpose of capturing images from outer space and transmit them back to NASA for analyzing.
Alexander Graham Bell (1847-1922), inventor of the telephone. Bell would have been known to history simply as Alexander Bell, but he was highly jealous of his brothers’ middle names and asked for and received one for his 11th birthday. His interest in acoustics developed during his childhood through his experiences with his deaf mother, influencing his later work with the deaf and experimentation with sound.