History

Refine Search

Who are some well-respected black physicians in history?

In 1891, Williams founded Provident Hospital and Training School for Nurses, and in 1893 he performed the first successful open-heart surgery in the world. In 1895, he also aided in the formation of the National Medical Association.\nWilliam Augustus Hinton in 1936 was the first African-American physician to publish a textbook. He developed the Hinton Test, a method for detecting syphilis.\nCharles DeWitt Watts advocated for civil rights including the medical rights of the poor in Durham, North Carolina. He fought for the certification of black medical students.

Continue Reading

When was the first stethoscope made?

Laennec continued to work on his invention in the effort to create a workable stethoscope. The early stethoscopes were simplistic oversized tubes with a single interior chamber that could amplify sound. They were instrumental in the development of today's stethoscope. Stethoscopes allowed doctors to fully examine patients while removing the need to make direct contact with the body of a patient. This reduced the concern of lice and other personal hygiene problems common in the 1800s. Additionally, it removed awkwardness resulting from examining female patients during more modest times.

Continue Reading

When did human beings invent the wheel?

Despite being a simple concept, the invention of the wheel was technologically complex for its time and required fine metal chisels to fit the axle snugly within the wheel. Archaeologists believe that the earliest wheels may have actually been pottery wheels rather than transportation. However, within only a few centuries of the earliest known wheel in the Near East, wheeled carts and wagons were common within the Eurasian region including modern-day Poland and the Ukraine. Some claim that wheels were likely invented in that region and spread to Mesopotamia rather than the other way around.

Continue Reading

What jobs did Thomas Edison have?

When Edison was 22 years old, he sold one of his inventions for $40,000, quit his telegraph operator job and devoted himself to inventing full-time. He built an independent industrial research facility with machine shops and laboratories. After patenting the light bulb in 1880, Edison started a company, the Edison Illuminating Company, to deliver the electricity to power his light bulbs. This utility company later became the General Electric Corporation.

Continue Reading

What countries made up the Axis powers?

The Axis powers had these common objectives: to destroy or neutralize the Soviet Union, to overthrow the post-World War I international order, and to expand their territory and build empires through military dominance. However, unlike the Allied powers of the United States, the Soviet Union, China, Great Britain and France (while it was not under German occupation), the Axis Powers had no coordinated foreign or military policy.\nThe three principal countries pressured other countries to join their cause. Hungary and Romania joined the Axis Powers on November 20, 1940 and November 23, 1940, hop..

Continue Reading

What was Robert E. Lee's role the American Civil War?

Robert E. Lee began the war as a military advisor to Jefferson Davis, the first and only President of the Confederate States of America. Lee became commander of the Army of Northern Virginia when its original commander, General Joseph E. Johnston, was wounded in the Battle of Seven Pines in May 1862. In February 1865, Lee was appointed General-in-Chief of the Confederate armies, but the Confederate position had deteriorated too far for Lee's appointment to alter the war's outcome.\nHe was responsible for the most famous defeats suffered by Union armies, including the Seven Days Battl..

Continue Reading

Who invented simple machines?

Simple machines include pulleys, wheels and levers. There are two classes of simple machines. Inclined plane, wedges and screws fall in the "forces" class, and wheels, levers and pulleys fall into the "torque" class. Archimedes' work to create simple machines was further improved upon by Heron of Alexandria. In 1600, Galileo Galilei proved that simple machines cannot create energy but simply transform it.

Continue Reading

What role did Mahatma Gandhi play in the Indian independence movement?

Gandhi was arrested on March 10, 1922 and convicted of sedition. He served 2 years of a 6-year sentence and, after his release, worked toward resolving a split that had caused the Indian National Congress to break into two opposing factions while he was imprisoned. He also attempted to bridge the differences between Hindus and Muslims in the independence movement.In 1930, Gandhi led the highly publicized Salt March, in which he and thousands of supporters marched more than 240 miles to the sea to make salt in defiance of a new British tax on the much-used commodity. Although more than 60,000 p..

Continue Reading

What is the timeline of the murder of Martin Luther King Jr?

On the morning of April 4, Ray learned from the media that Dr. King was staying in room 306 of the Lorraine Motel. At about 3:30 p.m., he checked into the nearby Bessie Brewer's Rooming House under the name John Willard. He asked to change from room 8 to room 5B, where the bathroom window had a clear line of sight to Dr. King's room. At 4:00, he bought a pair of binoculars from York Arms Company.\nAt 5:55, Dr. King and Ralph Abernathy came out of their respective hotel rooms on the way to dinner. Dr. King stood on his balcony talking to his driver on the ground below. At 6:01, shots ..

Continue Reading

What were Dr. Martin Luther King Jr.'s Beliefs?

King was one of the main driving forces behind the Civil Rights movements, as he worked tirelessly to help achieve equality for African-Americans. He also believed in the "Beloved Community," a term first used by Josiah Royce. The term referred to his belief that all people should be able to have enough to eat, enough money to sustain themselves, and a roof above their heads. It also referred to how he valued love and peace rather than hate and war.

Continue Reading
Showing 7641 to 7650 of 8554 (856 Pages)