The magnifying glass was invented in 1250 by Roger Bacon. As a lecturer at the University of Oxford, Bacon conducted many experiments with mirrors that explained the principles of reflection and refraction. He was known as Doctor Mirabilis, which is Latin for "wonderful teacher."
Although Bacon is credited with first discovering the properties of the convex lens, optical devices to make objects appear bigger have been used for thousands of years. In ancient Egypt, clear pieces of crystal were used to see small objects more clearly. Similarly, Roman Emperor Nero used clear gemstones to peer at faraway actors on stage.Learn More
No single person invented algebra. The roots of algebra extend to the ancient Babylonians, who first developed mathematical techniques to solve problems using algorithms. Later work by Greek, Persian and Indian mathematicians further extended these techniques and laid the foundations for modern algebra.Full Answer >
Items invented in 1998 include Windows 98, the iMac computer and the MP3 player. Viagra was also approved for use by the United States Food and Drug Administration in 1998.Full Answer >
Dr. James Naismith is credited for inventing netball. The no-dribble game was a spinoff of basketball that he invented in 1891 at a YMCA in Springfield, Mass.Full Answer >
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.Full Answer >