1867 and died in Irvington, New York on May 25, 1919 at the age of 51. She developed a herbal shampoo in pursuit of self hair care and found it effective. She marketed the product which was highly accepted. She was the first self-made millionaire black woman. In addition to being a ...
“black edison”. he made key contributions to the development of the telephone, streetcar, and more. woods received little schooling as a young man but later spent some time working on railways and took courses in engineering and electricity. he eventually set up his own company to develop ...
The idea of a blood bank was pioneered by Dr. Charles Richard Drew (1904-1950). Dr. Drew was an American medical doctor and surgeon who started the idea of a blood bank and a system for the long term preservation of blood plasma (he found that plasma kept longer than whole blood). ...
Not long after Lelia was born, Sarah began experiencing rapid hair loss due to a scalp infection. Most Americans during this time did not have access to indoor plumbing, and most Black women could only wash their hair once a month. Eventually, a combination of pollution, bacteria, and lice...
Thomas Edison was given more patents on inventions than any other Americans. When he died in 1931, Americans wondered how they could best show their respect (尊敬) for him. One suggestion was that the nation observed (实行) a minute or two of total blackout. All electric power would be ...
mouthpiece connected to a machine. However, Blount’s invention was declined by the American Veterans Administration, which made her donate the rights to it to the French government. She was proud that her feeding tube proved that even Black women could invent things that could benefit human...
No one knows for certain why, but the soldiers of the all-Black 9th and 10th Cavalry Regiments were dubbed “buffalo soldiers” by the Native Americans they encountered. One theory claims the nickname arose because the soldiers’ dark, curly hair resembled the fur of a buffalo. Another assump...
When we write with black ink, we're writing with soot — a powder made by burning coal or oil. Cars are machines that produce soot. To collect the soot, Anirudh Sharma, creator of AIR-INK, made a device called Kaalink, which attaches to a vehicle’s exhaust pipe (排气管).Once ...
Well, I still don't know, and don't really ever want to. What I CAN tell you, is that the idea of a chicken nugget was created by a professor at Cornell University, Robert C. Baker, in the 1950's. He had no idea how many inebriated Americans he'd be helping. ...
What do Australian inventions have to do with black holes, the areas in space with intense gravity caused by dying stars? Believe it or not, black holes were once thought to emit radio signals. Australian scientist John O'Sullivan was determined to find these signals in space. But he never...