the labor force was predominantly male. In fact, theBureau of Labor Statisticsreports that less than 30% of the labor force was female in 1950. Even though57.4% of womenwere in the workforce by 2019, these women still
Women inventors have been saving our lives since before the 1700s. However, before then, women were not allowed to own property or apply for U.S. patents to copyright or trademark their work. Women often had to apply for patents using their husbands’ names, but that all changed in 1793...
Because African-Americans were unable to receive patents prior to the Civil War, many of their inventions were credited to their white slave owners or to whites who agreed to sign the documents in their place.When the ban on patents was lifted in 1860, blacks received hundreds of patents....
(designed to drain wet areas, like marshes), ball bearings, the worm gear (a set of gears in which many teeth make contact at once, reducing the strain on the teeth, allowing more pressure to be put on the mechanism), and many other incredible ideas that were centuries ahead of da ...
a那个官员草拿了我的建议,因为他认为这个建议会很成功 That official grass has taken my suggestion, because he thinks this suggestion to be able very successful [translate] aa white disgised as a black 白色disgised作为黑色 [translate] a好的会变得伟大,坏的会变得糟糕 Good can become great, bad...
French fries were popular at the restaurant and one day a diner complained that the fries were too thick. Although Crum made a thinner batch, the customer was still unsatisfied. Crum finally made fries that were too thin to eat with a fork, hoping to annoy the extremely fussy customer. ...
Black inventors like Madam C.J. Walker, Frederick McKinley Jones, Patricia Bath, and Mark Dean revolutionized everyday life with their creations.
medicine; her inspiration for studying the electrical properties of the heart came when she studied electrical engineering and computer science as an undergraduate at MIT. Working with physicians is especially exciting, she says, because “you get the sense that one day your technology will be used...
Patricia E. Bathwas the first Black American to complete a residency in ophthalmology and the first Black female doctor to patent a medical device in the United States. The device she invented was theLaserphaco Probe, which removed cataracts—cloudy blemishes in the eye that can lead to vision...
aI suggested that she can now try to use credit card payment way to replace the original pay in cash 我建议她可以现在设法使用信用卡付款方式替换原始的薪水现金[translate] aWhite Arrod 7days 白色Arrod 7days[translate] adleed dleed[translate] ...