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First practical means of collecting energy from the Sun and turning it into a current of electricity. 1955: The hovercraft is patented by Christopher Cockerell. 1955: The intermodal container is developed by Malcom McLean. 1957: The laser and optical amplifier are invented and named by Gordon Gould and Charles Townes.
Bell believed the photophone's principles were his life's "greatest achievement", telling a reporter shortly before his death that the photophone was "the greatest invention [I have] ever made, greater than the telephone". The photophone was a precursor to the fiber-optic communication systems which achieved popular worldwide usage in the 1980s.
Science and inventions of Leonardo da Vinci. Leonardo da Vinci (1452–1519) was an Italian polymath, regarded as the epitome of the "Renaissance Man", displaying skills in numerous diverse areas of study. While most famous for his paintings such as the Mona Lisa and the Last Supper, Leonardo is also renowned in the fields of civil engineering ...
In 2001, the world was introduced to one of the most easily identifiable transportation devices ever created: the gyroscopic, self-balancing Segway scooter. The Segway was the brainchild of Dean ...
The numerous inventions and discoveries greatly advanced China's productive forces and social life. Many are at least as important as the four inventions, and some are even greater than the four. In 2017, the term "four great new inventions" became popularized in China in reference to high-speed rail, mobile payment, e-commerce, and bike-sharing.
Sound waves are carried as mechanical vibrations along the string or wire from one diaphragm to the other. The classic example is the tin can telephone, a children's toy made by connecting the two ends of a string to the bottoms of two metal cans, paper cups or similar items. The essential idea of this toy was that a diaphragm can collect voice ...
The NCC improved Gassner's model by replacing the plaster of Paris with coiled cardboard, an innovation that left more space for the cathode and made the battery easier to assemble. It was the first convenient battery for the masses and made portable electrical devices practical, and led directly to the invention of the flashlight.
The history of technology is the history of the invention of tools and techniques by humans. Technology includes methods ranging from as simple as stone tools to the complex genetic engineering and information technology that has emerged since the 1980s. The term technology comes from the Greek word techne, meaning art and craft, and the word ...