7 Inventions That Wouldn’t Exist If It Weren’t For Black Women

6. Caller ID Would Not Exist Without Shirley Ann Jackson

Image Source: @femalequotient

Shirley Ann Jackson is an American physicist, and the eighteenth president of Rensselaer Polytechnic Institute. She is also the first African-American woman to have earned a doctorate at the Massachusetts Institute of Technology (MIT) (source: Wikipedia).

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