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🔌 Black history facts they don’t teach in school A Black man’s invention made TVs, computers, and even pacemakers work better—but most people have never heard his name. 📡 Otis Boykin created an improved electrical resistor, a small but powerful invention used in electronics, military technology, and life-saving medical devices. ❤️ Pacemakers help keep the heart beating, and without his work, they wouldn’t be as reliable as they are today. 💰 Tech companies made billions from his ideas, but his

🔌 Black history facts they don’t teach in school A Black man’s invention made TVs, computers, and even pacemakers work better—but most people have never heard his name. 📡 Otis Boykin created an improved electrical resistor, a small but powerful invention used in electronics, military technology, and life-saving medical devices. ❤️ Pacemakers help keep the heart beating, and without his work, they wouldn’t be as reliable as they are today. 💰 Tech companies made billions from his ideas, but his

She Invented 3D Tech in 1980—Surgeons Still Use It" In 1980, NASA scientist Valerie Thomas patented the "illusion transmitter"—technology that transmits three-dimensional images using concave mirrors. NASA still uses it today, surgeons rely on it to see inside the human body, and it laid the groundwork for modern 3D imaging. This is her story. Valerie Thomas was born on February 8, 1943, in Baltimore, Maryland. At age eight, fascinated by how things worked, she borrowed a library book called "Th