Inspirational stories to share

1. Edison

Edison made more than one thousand inventions in his life. To invent the electric light bulb, he read a lot of materials, including more than 40,000 pages of notes. He experimented with thousands of substances and made tens of thousands of experiments before he invented the electric light.

2. David

David, an English chemist, was the son of a wood carver. Although his family was not rich when he was a child, he was poor and persevered in his study. At the age of 20, he discovered a gas that could make people laugh -- Laughing wide seven (nitrous oxide), and became famous in the world. During this experiment, he almost died from inhaling too much laughing gas. At the age of 29, he obtained sodium and magnesium by electrolysis, and the next year magnesium, calcium, strontium, and barium became famous.

When David gave his lecture, many writers, scientists, fashionable ladies, rich and important people complimented him, gave him gifts, and were honored to know him because of his fluency and wide range of quotations. However, David is still immersed in scientific experiments, and even risked his life to carry out highly toxic and explosive experiments. Someone advised him, now that he has achieved success, it is time to enjoy peace, wealth and honor. David said, "Science is my profession and my duty is to benefit mankind.

As long as there is life, we do it. Let a man have the substance of glory, not the name of it. It is better to contribute without honour than to have honour without contribution!"

3. Khan

He turned down $1 billion without a trace of regret; Someone gave him $10,000 and he thanked him like a million dollars!

He was Salman Khan, born in Bangladesh in 1976. Through his own hard work, Khan was admitted to the Massachusetts Institute of Technology (MIT), where he completed mathematics and computer science in four years and earned two undergraduate degrees. He went on to get a master's degree from Harvard.

In 2004, by chance, Khan found that tutoring students with his own math class via video was particularly effective. Since then, he has repeatedly locked himself in the locker room to record videos, from elementary school math, calculus in high school, to advanced mathematics in college, all over the year, a total of 4,800 videos.

He set up a website and founded the Khan Academy. Because his videos are so concise and vivid, delivering a math concept with fun in 10 minutes, more than 20,000 schools in the United States have math classes where teachers no longer lecture. Instead, students watch Khan's videos and the teacher answers questions.

In this way, Khan overturned the traditional education in the United States with a network cable, set off a revolution in mathematics education, he was known as the "godfather of mathematics".

In the spring of 2010, Khan learned in an email from an online payment platform that $10,000 had been injected into his account by a donor named Ann Doerr. Mr. Khan wrote to thank him for the largest donation he had ever received, and said he would be happy to name the khan Academy's first building after "Ann" if it ever had a campus.

However, he was soon approached by another venture capital firm offering to invest $1 billion, which he turned down without hesitation. Accepting the $1 billion, he said, would kill his desire to make his videos free for all children, especially those in developing countries.

In 2012, Khan made the cover of Forbes magazine. Forbes says it's a $1 trillion business opportunity, and Apple, the most valuable company today, is only $700 billion. But he remained unmoved: he still wouldn't take any vc money.

Khan's kindness and persistence touched many hearts, and After donating $10,000, Ann Doerr generously handed out a check for $100,000 and insisted on paying Khan's salary. Since then, she has become a "cheerleader" for the Khan Academy and often visits Khan's office, sometimes even bringing cakes.

Bill Gates has mentioned Khan on several important occasions, inviting him to Visit Microsoft and donating $1.5 million to Khan through his foundation.

Google launched a "Project 10" competition to award a total of $10m to five organisations that "could change the world". Khan Academy won the $2 million prize over a crowded field of competitors.

How powerful is good? It can make a person give up the possibility of becoming the richest person in the world. Khan says his value in life = the value he creates for society/the income he earns. The greater the ratio, the greater the value of one's life. In his view, the value created for society, not money, but social benefits, is free hundreds of millions of poor children can learn math.

Joule to learn -- to learn

British famous scientist Joule was very fond of physics since childhood, he often do some experiments on electricity, heat and so on.

One year on vacation, Joule and his brother traveled to the countryside. Clever and studious, Joule did not forget to do his physics experiments even when he was playing.

He hid behind a crippled horse, led by his brother, and tried to test the animal's reaction to an electric current by running it through a volta battery. As a result, the reaction he wanted to see happened. The horse jumped up and nearly kicked his brother.

The danger that had arisen did not in the least affect the mood of little Joule, who loved to experiment. He and Gurgle rowed out to a lake surrounded by mountains, where Joule wanted to test the echo. They stuffed the musket with powder and pulled the trigger. Who knows "bang" a sound, from the muzzle ejected a long flame, burned off Joule's eyebrows, but also nearly scared brother into the lake.

At this time, the sky thick clouds, thunder and lightning, just want to go ashore for shelter, Joule found that each lightning after a long time to hear the thunder rumbling, how is this?

Not taking shelter from the rain, Joule pulled his brother up a hill and carefully recorded with his pocket watch the time between each flash of lightning and the thunder.

Joule almost couldn't wait to tell his teacher all the experiments he had done and ask for advice.

The teacher smiled at the inquisitive Joule and patiently explained to him, "Light and sound travel at different speeds. The speed of light is fast while the speed of sound is slow. Therefore, people always expect to hear lightning and then hear thunder.

Joule had an Epiphany. From then on, he became even more interested in learning scientific knowledge. ** continued to study and carefully observed calculations. He finally discovered the law of heat equivalent and conservation of energy and became an excellent scientist.