William Morton first demonstrated the use of ether as an anesthetic, but no one knows who actually invented anesthesia. After Morton's demonstration at Massachusetts General Hospital, several people came forward claiming they had discovered anesthesia much earlier.Continue Reading
Horace Wells claimed to have invented the use of nitrous oxide for anesthesia two years before Morton's demonstration. Wells, a dentist, got the idea for using nitrous oxide while he was watching a laughing gas demonstration. One of the audience members hurt his leg during the event, but the injured man was not aware he had hurt himself. The following day, the man who gave the demonstration went to Wells' office and administered nitrous oxide to the curious dentist. Although a colleague extracted one of his teeth, Wells reported feeling no pain.
Charles Jackson, one of Morton's teachers, claimed he discovered the use of ether as an anesthetic and suggested Morton try the technique.Learn more about Inventions
Although William Playfair is often credited with having created the first bar graph around 1780, Nicole Oresme used a graph-like planar illustration in a 14th-century work to demonstrate the acceleration of an object over time. Because of similarities in Oresme's illustration to modern bar charts, his usage can be considered a forerunner of the current method of using visual elements to display numerical information. Joseph Priestly, another early proponent of using visual images to convey numerical concepts, published a timeline type of graph in 1765 that incorporated bars of varying lengths.Full Answer >
Feudalism, believed to be established by William the Conqueror, arose in Europe during the period known as the High Middle Ages, around the start of the 10th century. However, feudalism started at various other times throughout the world.Full Answer >
During Morton's neuroma surgery, the doctor gives the patient local anesthesia around the site of the neuroma, according to PodiatryNetwork. The patient can also receive intravenous sedation. After this, the doctor makes an incision at the top of the patient's foot near the neuroma.Full Answer >
No one knows for certain who invented the rolling pin. However, historians have determined that the Etruscans were the first known civilization to use rolling pins.Full Answer >