The little joke about technology is urgent! ! !

1. Johann Xie Lun, a famous German physician, is not only superb in medical skills, but also praised for his heuristic teaching methods. In an internship class, he told college students: "As a doctor, you should have two qualities: one is not demanding cleanliness; Second, we should have keen observation. Some old doctors often taste the urine of patients when diagnosing diabetes. " Say that finish, Xie Lidan gave the students a demonstration-put a finger into a small cup full of urine, and then put his hand into his mouth and licked it. After this action, sheridan asked the students, "Who wants to try again?" A diligent student still tastes urine. Xie Lidan shook his head and said to him, "Classmate, you are not a neat freak, which is good, but you have no observation. "Didn't you notice that I just dipped my middle finger into a small cup and licked my ring finger?" 2. The German physicist Kirchhoff (1824-1887) once pointed out in a lecture that the black line seen from the solar spectrum proves that there is gold on the sun. A banker who came to attend the class sneered at Kirchhoff and said, "What's the use of such gold if you can't get it from the sun!" Later, Kirchhoff won the gold medal for his discovery in spectral analysis. He showed the medal to the banker and said, "Look, I finally got gold from the sun." 3. The famous German physicist wilhelm konrad rontgen (1845-1923) discovered a special kind of ray in 1895, which was named Roentgen ray, which is what we often call "X" ray, and caused a sensation throughout Germany. Soon, Roentgen received a letter and mailed it to him for an X-ray. Roentgen said humorously in his reply, "I don't have X-rays in stock at present, and mailing X-rays is a very troublesome thing, so I can't order them. So please send me the box! " I'll provide you with a website. You can choose which one is suitable: /joke/6/