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Microscope
When glass was invented, Romans investigated about the uses of glass, they experimented viewing objects through it, and they noticed that made the objects appear larger. In the 1590's, Zacharias Jansen and his father started experimenting with these lenses.They put them in a tube and they made a huge discovery. The object in the end of the tube appeared to be bigger, bigger than any magnifying glass, but their first microscopes were more of a innovation than a scientific tool, -
Cotton gin
In 1794 the incredible inventor Eli Whitney patented the cotton gin, a machine that revolutionized the production of cotton by greatly speeding up the process of removing seeds from cotton fiber. Credits to: www.History.com -
Camera
The first camera invented was made by Dr,Alexander Wolcott. His camera design was patented on May 8, 1840. This invention made it possible for candid photos to be taken and not fade away with time. -
Refrigerator
Pioneers in refrigeration like Dr. William Cullen and Scotsman studied in the early 1700s dealt with the evaporation of liquids in a vacuum. Then Michael Farady, a Londoner who in the early 1800s liquified ammonia to cause cooling, and finally Dr. John Goorie of Apalachicola, Florida, who built a machine to make ice to cool the air for yellow fever patients in 1834. -
Telephone
In the 1870s, two inventors Elisha Gray and Alexander Graham Bell both designed devices that could transmit speech electrically.
Alexander Graham Bell patented his telephone first. Elisha Gray and Alexander Graham Bell entered into a famous legal battle over the invention of the telephone, which Bell won. -
Anesthesia
Four professionals later claimed to have been the main one who discovered anesthesia! Their fight went to Washington DC and to the French Academy, and various public figures and later historians tended to support this or that figute.
Crawford Williamson Long (1815-1878)Georgia physician who claimed to have used ether for surgery in 1846. -
Solar cells
In 1839 Alexandre Edmond Becquerel discovered the photovoltaic effect which explains how electricity can be generated from sunlight. He claimed that “shining light on an electrode submerged in a conductive solution would create an electric current.” Credits: www.energymatters.com.eu -
Air Conditioner
Willis Carrier invents the Apparatus for Treating Air for the Sackett-Wilhelms Lithographing and Publishing Co. in Brooklyn, N.Y. The machine blows air over cold coils to control room temperature and humidity, keeping paper from wrinkling and ink aligned. Finding that other factories want to get in on the cooling action -
Television
Electronic television was first successfully demonstrated in San Francisco on Sept. 7, 1927. The system was designed by Philo Taylor Farnsworth.While still in high school, Farnsworth had begun to conceive of a system that could capture moving images in a form that could be coded onto radio waves and then transformed back into a picture on a screen.Boris Rosing in Russia had conducted some crude experiments in transmitting images 16 years before Farnsworth's first success -
Microwave oven
The microwave oven was invented as an accidental by-product of war-time radar research using magnetrons.In 1946, the engineer Dr. Percy LeBaron Spencer, was working on magnetrons. One day at work, he had a candy bar in his pocket, and found that it had melted. He realized that the microwaves he was working with had caused it to melt. After experimenting, he realized that microwaves would cook foods quickly - even faster than conventional ovens that cook with heat
