The telephone was invented by Edison. But Berby Edison filed a patent application two hours in advance. So I got the patent right first. But the telephone can receive and talk clearly. Thanks to Edison's repeated experiments, he broke through the traditional pattern and made a toner transmitter, which improved the sensitivity, volume and receiving distance of the telephone in one fell swoop.
Edison set himself an impossible task: in addition to improving lighting, he also created a power supply system. So Edison and his partners in Romon Garden made 1600 experiments on heat-resistant materials and more than 600 kinds of plant fibers, and made the first carbon filament light bulb, which can burn for 45 hours at a time.
In order to extract 0. 1 g radium from 9 tons of asphalt residue, the Curies struggled for 45 months in a simple laboratory, constantly stirring every day, wearing dusty overalls, and the smoke made them cry. Because of their discovery and research on radioactivity, the Curies won the 1903 Nobel Prize in physics, and Madame Curie became the first woman to win the Nobel Prize in history.
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Perseverance means never flinching no matter how many setbacks you suffer, which is a metaphor for being strong-willed and resolute in character. This idiom, also known as "indomitable", comes from Cai Yong's Autumn Bridge Monument in Han Dynasty. Han Caiyong's "Qiao Xuan Monument": "It is strong in nature, simple in fashion and indomitable, and it is inevitable when it comes to major festivals."
Although Li Zicheng suffered a crushing defeat recently, he is indomitable and enterprising. Coupled with the presence of important generals, he is concentric, intimate and at a loss. He is also good at rectifying military discipline and saving people's lives, so it is not difficult for him to stand up again as long as he has a rest. (Yao's Li Zicheng, Volume I, Chapter 17).
People's Network-65438+10.021? 1879-American scientist Edison invented electricity.
People's Network-Madame Curie: Dedicated to Science-Literature and History
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