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Pioneering supersonic flight

Pioneering supersonic flight

Christine Darden (1942-present), a female engineer at NASA, used computer models to calculate the environmental effect of sonic booms.

Sonic booms are the loud noises produced when planes fly faster than the speed of sound. The noise is caused by the sudden change in air pressure around the aircraft. While NASA scientists replicated the booms using wind tunnels and model planes, Darden's simulation results matched the wind tunnel outcomes, were cheaper and more efficient.

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Invention of the blood bank

Invention of the blood bank

Charles Drew (1904-1950). Drew was a leading expert on blood.

During World War II, the need for blood transfusions increased. So in 1940, the U.S. formed the Blood for Britain project, aiming to ship blood overseas. Drew was appointed head of the project, and with John Scud...

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118 reads

The first lunar telescope

The first lunar telescope

George Carruthers (1939-2020) designed the Lunar Surface Ultraviolet Camera in 1972.

The camera was sent aboard Apollo 16 and put on the lunar surface. From there, it took over 550 ultraviolet images of stars, nebulas and galaxies. It also gathered data on Earth's atmospher...

27

164 reads

The father of fibre-optic communication

The father of fibre-optic communication

Charles Kuen Kao (1933-2018) transformed the way we communicate. In the mid- 1960s, Kao suggested that information can be delivered in the form of light through fibre-optic cables.

The cables are made of long, purified glass pipes along which light beams wo...

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328 reads

Treatment for leprosy

Treatment for leprosy

Alice Ball (1892-1916) pioneered a new treatment for leprosy. Leprosy caused nerve damage and skin lesions. In 1873, Norwegian physician Dr Gerhard Henrik Armauer Hansen found that a bacterium Mycobacterium leprae caused leprosy.

In 1915, Ball developed...

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167 reads

Treating cataracts with lasers

Treating cataracts with lasers

Studies show that over 90% of Americans have at least one cataract by age 65. There are various treatments for cataracts. One technique involved inserting a needle into the eye to reach the lens, then breaking apart the cloudy cataract using an ultrasound probe.

Pat...

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158 reads

Breaking HIV's genetic code

Breaking HIV's genetic code

Flossie Wong-Staal (1946-2020), a virologist, played a central role in AIDS research.

Wong-Staal was part of the team that first identified the HIV virus as the cause of AIDS. Together with her colleague Robert Gallo, Wong-Staal cloned HIV and discovered how it hides from t...

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162 reads

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