There is evidence suggesting that indoor plumbing began in 8000 BC, when households in Scotland used basic plumbing to carry water to a nearby creek. Plumbing continued to advance through the ancient era, but was neglected in Europe until the 19th century, which was when large systems were developed.Know More
The earliest evidence of indoor plumbing comes from Scotland in 8000 BC, where water was used to flush waste from indoor troughs to a nearby creek. In 4000 BC, perforated bricks were use to drain water from homes in Iraq to pits that lay beneath them. By 3000 BC, people living in Crete were using rudimentary toilet systems, which required servants to pour water that would flush waste away.
During the middle ages, parts of Mesoamerica used basic flushing systems. However, many parts of Europe saw a decline in the advancement of indoor plumbing, leading to unsanitary conditions. This began to change in the 19th century when public health officials linked the spread of disease with unsanitary conditions.
This led to the advancement of underground sewage systems, which required indoor plumbing. Initially, lead piping was used in many parts of the world, and galvanized iron in the U.S. Eventually, most households relied on copper piping for their indoor plumbing systems.Learn more about Inventions
The biggest inventions of 1994 were the CMOS image sensor and the first PlayStation games console. Other major inventions were the quantum cascade laser, the HIV protease inhibitor and the Segway.Full Answer >
Brahmagupta, a Hindu mathematician and astronomer, first used a dot underneath other numbers to represent the number zero in 628 A.D. He was the first to develop additive and subtractive operations that use zero.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 >
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 >