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The modern escalator.
Charles Seeberg redesigned Jesse Raynor's escalator and invented the modern escalator.
The escalator was introduced to people all over the world at the Paris World Expo in 1900. It changed people's sense of space and the way they interact with their environment. -
The Zeppelin.
The Zeppelin was invented by Count Ferdinand von Zeppelin.
After the invention of the Zeppelin airship, it was quickly put into the war. It was the main force of the first large-scale cross-border air raid in history. After the war ended in 1918, these overlords of the sky gradually turned to the civilian field targeting the nobility and the rich. -
The double-edged safety razor.
Campbell Gillette invented the double-edged safety razor.
The purpose of the invention of the safety razor is of course to protect the user's skin. -
The modern vacuum cleaner.
Hubert Booth invents a compact and modern vacuum cleaner.
Frees the housewife's hands. -
The first radio receiver.
The first radio receiver successfully picks up radio transmissions.
The birth of radio was a major step in the history of human technology. October 2, 1920: KDKA, the first commercial radio station in the United States, broadcasts in Pittsburgh. July 1, 1941: WBNT, the first commercial television station, begins broadcasting. April 3, 1973: Martin Cooper of Motorola produces the world's first cellular phone. -
The Teddy Bear.
The birth of the Teddy Bear.
For teddy bears, perhaps the most important thing is the name Teddy.
The history of toy bears is long, but the universal name of teddy bears seems to carry people's yearning for warmth and family.
Although not true, the most widely circulated story about teddy bears is "In 1902, US President Roosevelt was hunting in Mississippi. After three days of fruitless searching, the guide caught a little bear and waited for the president to shoot it, but Roosevelt refused." -
The air conditioning.
Willis Carrier invented air conditioning.
One of the main culprits causing the ozone hole. -
The neon sign.
George Claude invented the neon sign.
Neon lights first appeared in Paris. This invention allowed many stores to use it to attract customers at night, while also turning the streets into more modern night market scenes. -
The first gas-powered manned airplane.
The Wright brothers invented the first gas-powered manned airplane.
On the one hand, the emergence of airplanes facilitated people's lives in the later period. On the other hand, it made the wartime officers realize the importance of occupying the sky, and these iron birds with huge roars filled the entire war period. -
The vacuum diode or Fleming valve.
John A. Fleming invented the vacuum diode or Fleming valve.
It is used as a radio wave detector and is now inseparable from our lives. -
E = mc2.
Albert Einstein published his theory of relativity and proposed the famous equation E = mc2.
General relativity established a complete theory of gravity, mainly involving celestial bodies. Relativity has greatly changed the "common sense" concept of the universe and nature, and proposed new concepts such as "simultaneous relativity", "four-dimensional space-time", and "curved space-time". It developed Newtonian mechanics and raised physics to a new level. -
The first synthetic plastic, called Bakelite.
Leo Baekeland invented the first synthetic plastic, called Bakelite.
Most of the Bakelite that can be found today is antique jewelry. -
The electronic amplifier tube (the triode).
Lee DeForest invents the electronic amplifier tube (the triode).
Used as amplifiers, oscillators and electronic circuits for audio and radio signals -
The first sonar-like device.
Lewis Nixon invents the first sonar-like device.
Initially used to detect icebergs, interest in sonar increased during World War I when people needed to be able to detect submarines. -
Color photography.
Color photography invented by Auguste and Louis Lumière.
It not only added entertainment items, but also provided another way of recording for future generations. -
The Model T.
The Model T is first sold.
It has changed people's travel methods and made life more convenient, but it has also polluted the environment. -
Geiger counter
JW Geiger and W Müller invent the Geiger counter.
It is used to measure nuclear radiation and provide workers with safety inspection indicators while the country develops nuclear energy. -
the Haber process for producing artificial nitrates.
Fritz Haber invents the Haber process for producing artificial nitrates. -
the first talking motion picture.
Thomas Edison demonstrated the first talking motion picture.
Giving sound to movies,