When were oil paints developed?

Answer According to the "Encyclopedia of Irish and World Art: 2010," no one knows exactly when oil paints were first invented. The first-known example of oil painting in Europe was in the 11th century. Ho... Read More »

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When were airbags developed?

According to the Massachusetts Institute of Technology, Allen K. Breed invented the airbag in 1968, but did not start marketing it until 1987, when he founded Breed Automotive. His company, under t... Read More »

When were the BMI charts developed?

Lambert Adolphe Jacques Quételet of Ghent, Belgium, strove to define the average man. In his quest, he is credited with defining the Body Mass Index (BMI) in 1835. The World Health Organization cl... Read More »

When were Breathalyzers developed?

The first Breathalyzer was invented in 1954. A professor at Indiana University named Robert F. Borkenstein invented the Breathalyzer. It was the first portable and practical instrument developed to... Read More »

When were Keynesian economics developed?

John Maynard Keynes, a British economist, introduced Keynesian economic theory in 1936 as a response to the Great Depression. Classical economic theory argued that the market system was inherently ... Read More »