The most famous invention: calculator
When it comes to Leonardo da Vinci and his inventions, you'd better ask such a question: "What didn't he invent?" Because he invented many things. There are many design drawings in Leonardo da Vinci's work log, but the most noteworthy is the design of the calculator. Imagine what science would be like without simple and complicated mathematical operations.
Second place: nikola tesla (USA)
The most famous invention: radio
Although nikola tesla was not recognized before his death, the US Supreme Court finally affirmed his patent application and confirmed that he, not Marconi, invented the radio.
Tesla may have been born unconventional. Although a transmission mode called "alternating current" invented by him is still in use today, in fact, his research focuses on the theoretical application of electricity (unfortunately, many research results still stay on the drawing board). It is this Tesla who always makes his own experimental equipment (such as the famous Tesla coil for collecting electric energy) and puts forward a series of viewpoints from X-rays to seismographs.
Third place: alessandro volta (Italian)
The most famous invention: the battery
Volt didn't find electricity, but he came up with a good idea to carry it. You know, "Volt battery" is the pioneer of modern batteries.
Volt has been engaged in electrical work all his life. In the early days, he invented the starter (that is, a single-board capacitor with one charge), and a year later he devoted himself to the experiment of gas-fired power generation in a closed room. In the process, he discovered methane, a gas commonly used in families today. However, what really makes it famous is the "Volt battery", which is actually a pile of zinc sheets and copper sheets alternately arranged, and a cloth soaked in salt water is added between the two metal sheets to enhance the conductivity. But it is this rough battery that shows the world the mystery of how to use the chemical combination of metals to generate electricity.
Fourth place: alexander bell (UK)
The most famous invention: the telephone
The coolest fact: alexander bell was also the inventor of the world's first metal detector. He assembled this device to find the bullet in President james garfield's body. As a result, the detector did work, but the position of the bullet could not be determined because President Garfield was lying on a metal shelf during the inspection.
Fifth place: isaac newton (UK)
The most famous invention: calculus
If you finally try to finish the advanced mathematics course, you may not be a big fan of Sir isaac newton, because all the problems you encounter are basically his fault-he invented calculus.
Sixth place: howard hughes (USA)
The most famous invention: improving aircraft design
Howard hughes didn't invent the airplane. As the "father of global aviation", he mainly wrote some books about airlines. Although global aviation has become a thing of the past, thanks to howard hughes, aviation tourism can flourish.
Seventh place: Benjamin Franklin (USA)
The most famous invention: bifocal glasses
The coolest fact: Inventors and stallions (men who like to pursue women) usually don't involve the same person, but Benjamin Franklin is an exception. He was the most attractive man of his time, and his popularity among French women really benefited the American cause.
Eighth place: james watt (UK)
The most famous invention: the improved steam engine
Today, we won't use steam as the main energy source, but back in the early days of the industrial revolution, steam was a time to show off. James watt spent a lot of time improving the steam engine and pushing the world forward.
Ninth place: Johannes Gutenberg (Germany)
The most famous invention: modern printing
Johannes Gutenberg wants to piece all the little things together to make a movable type printing machine. Before you realize the fact that his printing may set off an information revolution, you will feel that his idea seems a little less great.
Tenth place: Thomas Edison (USA)
The most famous invention: the electric light bulb
There is nothing more representative of innovation than a light bulb. In fact, Edison's invention had a far-reaching impact on the world and was called the symbol of all great ideas.