which inventions helped humans meet their growing needs?
Answers
Antibiotics: Alexander Fleming - 1928
Alexander Fleming discovered the active substance that he termed "penicillin" while working on the influenza virus. Fleming made this discovery by observing that mold had developed accidentally on a staphylococcus culture plate and that the mold had created a bacteria-free circle around itself. He was inspired to further experiment and he found that a mold culture prevented the growth of staphylococci, which verified his discovery. To this day, penicillin is used to treat a host of bacterial infections.
Food and Drink
Pasteurization: Louis Pasteur - 1862
Louis Pasteur developed the process now known as "pasteurization," which is a process of heating food to a specific temperature for a definite length of time and then cooling it immediately in order to reduce the number of viable pathogens that may cause disease. Dairy products, canned foods, juices, syrups, water, and wines are the primary products that are pasteurized today.
Transportation
Modern Automobile: Karl Benz - 1886
Karl Benz patented all of the processes that made the internal combustion engine feasible for use in cars. Karl Benz and his wife, Bertha Ringer Benz, were the founders of the Mercedes Benz automobile manufacturing company.
Energy
Modern Alternating Current Electrical Supply System: Nikola Tesla - 1891
Nikola Tesla filed for seven U.S. patents in the field of polyphase alternating current motors and power transmission. Tesla's patents comprised a complete system of generators, transformers, transmission lines, motors, and lighting. Tesla is also credited with the invention of the radio, although a patent dispute with the Marconi Company that was ultimately decided by the U.S. Supreme Court brings into question if he should receive the sole credit for the radio invention.
Technology
Electronic Digital Computer: John Atanasoff and Clifford Berry - 1937
John Atanasoff and Clifford Berry constructed the first electronic computer with vacuum tubes while working for Iowa State College. The Atanasoff-Berry computer was the first digital computer. It introduced the concepts of binary arithmetic, regenerative memory, and logic circuits. The Atanasoff-Berry machine never reached the production stage and remained a prototype.