President Barack Obama presents George Carruthers with the National Medal of Technology and Innovation

George Carruthers who was (born in 1939) is an astrophysicist who spent much of his career working with the Space Science Division of the Naval Research Laboratory (NRL) in Washington, D.C. He is most famous for creating the ultraviolet camera/spectrograph, which NASA used when it launched Apollo 16 in 1972. It helped prove that molecular hydrogen existed in interstellar space, and in 1974 space scientists used a new model version of the camera to observe Halley’s Comet and other celestial phenomena on the U.S.’s first space station, Skylab. Carruthers was inducted into the National Inventors Hall of Fame in 2003.

8.  Dr. Patricia Bath

The ophthalmologist Dr. Patricia Bath who was (born in 1942) revolutionized the field of ophthalmology when she invented a device that refined laser cataract surgery, called the Laserphaco Probe. She patented the invention in 1988, and today she is being recognized as the first African American woman doctor to receive a medical patent. Bath is a trailblazer and also a genius in other areas, She was the first African American to finish a residency in ophthalmology; the first woman to chair an ophthalmology residency program in the U.S and she co-founded the American Institute for the Prevention of Blindness.  Bath’s research on health disparities between African American patients and other patients gave birth to a new discipline, “community ophthalmology,” in which volunteer eye workers offer primary care and treatment to underserved populations.

9. Jan  Ernst Matzeliger

Far back in ancient times, history records that there was a time no one knew or could afford to get a shoe. This incident changed after Jan Ernst Matzeliger came up with his invention. Matzeliger who was an immigrant from Dutch Guiana (today called Surinam), worked as an apprentice in a Massachusetts shoe factory. Matzeliger invented the automated shoemaking machine that attached a shoe’s upper part to its sole. Once it was refined, the device could make 700 pairs of shoes each day— which was far better from the 50 per day that the average worker once sewed by hand. Matzeliger’s creation led to lower shoe prices, making them finally within financial reach for the average person.

10.  Alexander Miles

 Alexander Miles’s ( born in the 1830s–1918) not much about his life was known back then, but he was an inventor who lived in Duluth, Minnesota, where he designed an important safety feature for elevators and their automatic doors. During the 19th century, passengers had to manually open—and close—doors to both the elevator and its shaft. If a rider forgot to close the shaft door, other people risked accidentally falling down the long, vertical hole. Miles’s design was patented in 1867, which allowed both of these doors to close at once, preventing unfortunate accidents in the making. Today’s elevators still employ a similar technology.

11. George Washington  Carver

George Washington Carve (1860s-1943) who was born into slavery in Missouri. The Civil War ended when he was a boy, giving him the chance to receive an education. Higher education opportunities for African Americans were limited at that time, but Carver eventually received his undergraduate and master’s degrees in botany at Iowa State Agricultural College. After graduation, Carver was hired by Booker T. Washington to run the Tuskegee Institute’s agricultural department, in southeastern Alabama, where He helped poor agrarians by teaching them about fertilization and crop rotation—and since the region’s primary crop was cotton, which drains nutrients from the soil, the scientist conducted studies to determine which crops naturally thrived in the region.
Legumes and sweet potatoes enriched the fields, but there was not much of a demand for either of them. So Carver used the humble peanut to create more than 300 products, ranging from laundry soaps to plastics and diesel fuel. By 1940 it was the South’s second-largest cash crop.