General Knowledge (Inventions & Discoveries)

Wernher von Braun was a German-born aerospace engineer and space architect who is considered the father of rocket technology and the V-2 ballistic missile.

Wilhelm Conrad Roentgen discovered X-rays in 1895 while experimenting with cathode rays, for which he received the first Nobel Prize in Physics.

Count Ferdinand von Zeppelin was a German general and inventor who developed the rigid airship, which became known as the Zeppelin.

James Spangler, a janitor, invented the first portable electric vacuum cleaner in 1907, which he later sold to William Hoover.

Pierre Eugene Marcellin Berthelot, a French chemist, is credited with the discovery and synthesis of acetylene gas.

Thomas Newcomen invented the first practical steam engine in 1712. While James Watt later improved it, Newcomen is credited with the original atmospheric steam engine.

Terylene is a synthetic polyester fiber developed by British chemists John Rex Whinfield and James Tennant Dickson in 1941.

King Camp Gillette is famous for inventing the safety razor with disposable blades, which revolutionized shaving at the turn of the 20th century.

The compact disc (CD) was developed through a collaboration between Philips and Sony. Philips is the correct entity listed here.

Kirkpatrick Macmillan is widely credited with inventing the first rear-wheel-driven bicycle in the late 1830s.

Richard Trevithick built the first working railway steam locomotive in 1804. It successfully hauled a load on the Penydarren tramway.

Magnetic recording tape was invented by Fritz Pfleumer.

Percy LeBaron Spencer discovered the heating effect of microwaves while working on radar technology, leading to the invention of the microwave oven.

Edwin Howard Armstrong is the American electrical engineer who invented wide-band frequency modulation (FM) radio.

Frederick Lanchester patented the disc brake in 1902, though it did not see widespread automotive use until much later.

Paul Ehrlich is considered the father of modern chemotherapy, having developed the concept of the 'magic bullet' to treat syphilis.

Zenobe Gramme invented the Gramme dynamo, which was the first industrial-scale electric motor, in the 1870s.

In 1800, Alessandro Volta invented the first true battery, which came to be known as the voltaic pile.

J.F. Cantrell opened the first laundromat (launderette) in Fort Worth, Texas, in 1934.

William Henry Fox Talbot invented the calotype process, which was a significant milestone in the history of photography.

Richard Hoe invented the rotary printing press, which significantly increased the speed of newspaper printing.

Luigi Brugnatelli, a colleague of Alessandro Volta, performed the first electroplating of gold in 1805.

Clive Sinclair, through his company Sinclair Research, produced the ZX81 and other early home computers, often referred to as laptops in early portable contexts.