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Reed's first patent, Patent No. 305,474, made her the first African American women who officially received a US patent, inventing the Dough Kneader and Roller and was classified as "B29B7/562 Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders with co-operating rollers, e.g. with repeated ...
Speculative evolution is a subgenre of science fiction and an artistic movement focused on hypothetical scenarios in the evolution of life, and a significant form of fictional biology. [1] It is also known as speculative biology [ 2 ] and it is referred to as speculative zoology [ 3 ] in regards to hypothetical animals . [ 1 ]
In mathematics and theoretical physics, Noether's second theorem relates symmetries of an action functional with a system of differential equations. [79] The action S of a physical system is an integral of a so-called Lagrangian function L, from which the system's behavior can be determined by the principle of least action. Isomorphism theorems
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Here's the history and meaning behind Women's history month colors: purple, green, white and gold. Experts explain the fascinating origins.
Black History Month is an annually observed commemorative month originating in the United States, where it is also known as African-American History Month. [ 4 ] [ 5 ] It began as a way of remembering important people and events in the history of the African diaspora , initially lasting a week before becoming a month-long observation since 1970 ...
Chisholm kicked the door in for African American women holding major roles in government. She first served as an educational consultant for New York City's Bureau of Child Welfare and ran for the ...
In 1987, after being petitioned by the National Women's History Project, Congress passed Pub. L. 100-9 which designated the month of March 1987 as Women's History Month. [10] Between 1988 and 1994, Congress passed additional resolutions requesting and authorizing the President to proclaim March of each year as Women's History Month. [ 10 ]