Because the nucleus of americium is unstable, once it is broken, its mass seems to disappear, because the mass of fragments is smaller than that of pronucleus. In fact, the mass of americium atom has not disappeared at all. This is what Einstein told us.
Step 2: Smooth roads
In Einstein's doctoral thesis, new methods for measuring molecules in different solutions were discussed, which later became the basic methods of colloid chemistry. When building a highway, a building materials engineer used his research results.
3. Computer monitoring
In a short moment, electrons are being emitted from the cathode of the picture tube, as if gaining energy in the process of acceleration and accumulating on the display screen, which is just in line with Einstein's special theory of relativity. The engineer who invented the computer display must make the display conform to the "relativistic effect", otherwise the magnet that controls the electronic flight will produce blurred images on the display screen, which will make you unable to work, and of course, wonderful computer games will not be played.
4. Precision laser
Every commodity bar code also benefits from Einstein's laser theory. Only the laser can accurately read the code in the bar code.
5. Solar cells
Photovoltaic cells can convert solar energy into electric energy. Einstein first correctly analyzed this transformation principle in a paper published 90 years ago.
He found that photons have energy. Some photons carry enough energy to overcome the "stickiness" of electrons concentrated on a certain metal, which is the famous photoelectric effect.
6. Digital camera
Photons flying in from the lens will crowd out the electrons in the semiconductor, which also takes advantage of the precious photoelectric effect. ?
7. medicine
Many drugs are made by Einstein's paper on Brownian motion.
Robert brown, a British botanist, was the first to observe that particles in suspended liquid always keep irregular motion. On the other hand, Einstein used Brownian motion to create a statistical method to link microscopic quantities with macroscopic quantities.
8. Global Positioning System
GPS (Global Positioning System) can help you get in touch with searchers. 100 years ago, Einstein found that the traditional concept of time was not sufficient if we wanted to consider multiple events in different places together.
It is no exaggeration to say that inventions derived from Einstein's scientific theory have covered almost every corner of modern civilization. Computer games, buses, digital cameras ... every detail of our daily life flashes Einstein's shadow.
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Albert. Einstein (1March 87914-1April 955 18) was born in Ulm, Wü rttemberg, Germany. He graduated from the University of Zurich and was a Jewish physicist.
Einstein was born in a Jewish family in Ulm, Germany on 1879. 1900 graduated from the Federal Institute of Technology in Zurich and became a Swiss citizen. 1905 received a doctorate from the University of Zurich. Einstein put forward the photon hypothesis and successfully explained the photoelectric effect. So he won the Nobel Prize in physics at 192 1 and founded the special theory of relativity at 1905. General relativity was founded in 19 15. 1April 1955 18 died at the age of 76.
Einstein laid a theoretical foundation for the development of nuclear energy and initiated a new era of modern science and technology, and was recognized as the greatest physicist after Galileo and Newton. 199965438+On February 26th, Einstein was selected as "the great man of the century" by American Time magazine.