Indian scholar Aryabhata invented zero that opened many possibilities in the world of mathematics. Department Of Financial Services, GOI Amrit Mahotsav #UnionBankOfIndia #GoodPeopleToBankWith #AmritMahotsav #PowerOfU #SathSathSashakt | Union Bank of India

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She Invented The Airplane Call Button—They Erased Her On July 17, 1888, Miriam Elizabeth Benjamin became the second African American woman to receive a US patent for her revolutionary Gong and Signal Chair for Hotels. A Washington D.C. schoolteacher, Benjamin invented a notification system that allowed seated individuals to press a button, sounding a gong while displaying a red signal showing exactly who needed assistance. In her patent application, she stated it would "reduce the expenses of ho