1, solar cell exposure meter, burglar alarm and camera are all based on photoelectric effect.

2. Nuclear energy takes advantage of such a physical phenomenon:

When uranium atoms undergo fission, a slight loss of total mass can be converted into energy, which is based on Einstein's famous equation E = mc2. Today, nuclear energy provides 25% of Britain's electricity.

3. The reason why GPS can accurately locate the object to the meter level is that it corrects the signal sent by the earth satellite according to Einstein's theory of relativity.

4. The combination of special relativity and quantum theory points out the existence of antimatter. Scientists use positrons, or antimatter "electrons", to study brain activity through X-ray tomography.

The characteristics of subatomic particles are the direct result of relativity, and their existence can explain many phenomena, from the characteristics of chemical elements to the role of magnets.

6. Einstein's study of photons from 19 16 to 19 17 laid the foundation for the discovery of laser 40 years later. At present, laser is widely used in many products, from DVD to laser printer.

Extended data:

As early as 16 years old, Einstein learned from books that light is a very fast electromagnetic wave, and he really wanted to discuss it.

The so-called etheric problem related to light waves.

The word ether comes from Greece and is used to represent the basic elements that make up objects in the sky.

/kloc-Descartes in the 0/7th century and later christiaan huygens initiated and developed the theory of ether, which believed that ether was the medium of light wave propagation.

It fills all spaces, including vacuum, and can penetrate into matter.

Different from the ether theory, Newton put forward the particle theory of light. Newton thought that a luminous body sends out a stream of particles moving in a straight line, and these particles

The effect of flow on the retina leads to vision.

Newton's particle theory prevailed in18th century, and wave theory prevailed in19th century.

The theory of ether has also been greatly developed: the propagation of waves needs medium, and the medium through which light propagates in vacuum is ether, also called optical ether.

At the same time, electromagnetism has developed vigorously, and through the efforts of Maxwell and Hertz, mature electromagnetic phenomena dynamics has been formed.

Theory-electrodynamics.

It is proved theoretically and practically that light is electromagnetic wave in a certain frequency range, thus unifying the wave theory of light and electromagnetic theory.

Ether is not only the carrier of light waves, but also the carrier of electromagnetic fields.

Until the end of 19, people tried to find ether, but they never found it in the experiment. On the contrary, Michelson Morey's experimental findings are indeed true.

It is unlikely to exist.

References:

Baidu Encyclopedia _ Albert Einstein

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What did Einstein invent?

1, smoke detector here is a hypothetical "you" as a metaphor. Please pay attention to the smoke detector on your head when you get up from the hotel in the morning and go out to prepare for morning exercise. It uses the radioactive substance americium -24 1 to release energy and produce a small charged particle belt. In the event of an accident, the smoke generated by the flame will react with the particle beam, triggering an alarm to sound automatically. 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. 2. I have to drive to work when I get home from the flat highway. The smooth road under your wheels is also engraved with Einstein's credit. 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. When the computer monitor comes to the office, you turn on the computer and start working. 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. Accurate Laser When you go shopping in the supermarket after work, every bar code in your hand also benefits from Einstein's laser theory. Only the laser can accurately read the code in the bar code. 5. Solar cells If you want to use solar cells to provide energy for your room. These photovoltaic cells can convert solar energy into electric energy, and Einstein correctly analyzed this conversion principle for the first time 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 On Sunday, you will have an easy trip with your family. When you turn on the digital camera to take a picture of your family's warm smile, you should thank Einstein first. 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 If you have a slight physical problem, you need medication. 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. Until today, these statistical methods are still the matching rules that pharmacists all over the world must follow. It doesn't matter if you win the lottery in the Global Positioning System (GPS). The GPS you carry can help you get in touch with Seeker. 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. Although the GPS satellite is equipped with an accurate atomic clock, if there is no time adjustment of the satellite atomic clock by the ground atomic clock, the signal sent by the positioning system to the ground every day will have a deviation of 1.6 km. 8. Control the energy of X-rays. You have a tumor. Fortunately, it is benign, but because it grows on the thymus, it needs radiotherapy after the operation. Doctors need to estimate the damage that X-rays may cause to your cells according to Einstein's E=mc2 before giving you radiotherapy. Extended data:

Introduction to Einstein: Albert. Einstein (1March 87914-1April 955 18) was born in Ulm, the kingdom of Wü rttemberg, Germany. He graduated from the Federal Institute of Technology in 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. References:

Albert Einstein, Baidu Encyclopedia

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What did Einstein invent? What did Edison invent?

Einstein's discovery subverted the microscopic laws of physics. Einstein put forward three epoch-making theories: light quantum hypothesis, special relativity and statistical explanation of Brownian motion. As a result of confirmatory experiments, several great scientists who did not believe in the existence of atoms at that time turned to believe. Since then, Einstein mainly attacked his higher goal-general relativity, and finally gave the basic framework of general relativity at the age of 37. Edison invented the phonograph, movie camera and electric light, which had a great influence on the world. Edison was the first scientist in human history who used a large number of production principles and electrical engineering research laboratories to patent inventions. He had more than 2,000 inventions and 1000 patents in his life. Extended data:

Scientist: a person who objectively and digitally reproduces, understands, explores and practices the unity of real nature and unknown life, environment, phenomena and related phenomena. Such as British physicist Newton, Polish physicist Madame Curie, American scientist Einstein, king of black holes Hawking and so on.

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What did Einstein invent?

1, smoke detector 2, smooth road 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 display 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. 4. Accurate Laser Every commodity barcode also benefits from Einstein's laser theory. Only the laser can accurately read the code in the bar code. 5. Solar cells These 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. Photons flying in from the lens of a digital camera will crowd out the electrons in the semiconductor, which also takes advantage of the precious Einstein photoelectric effect. 7. Drugs 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. Until today, these statistical methods are still the matching rules that pharmacists all over the world must follow. 8. Global Positioning System Einstein found that the traditional concept of time is not sufficient if multiple events in different places are considered together. Although the GPS satellite is equipped with an accurate atomic clock, if there is no time adjustment of the satellite atomic clock by the ground atomic clock, the signal sent by the positioning system to the ground every day will have a deviation of 1.6 km. 9. Controlling the Energy of X-rays Before giving you radiotherapy, doctors need to estimate the damage that X-rays may cause to your cells, according to Einstein's E=mc2.

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What did Einstein invent?

Einstein invented: 1. Special Relativity Special Relativity is a new plane theory of time and space, which is different from Newton's view of time and space. It was published by Albert Einstein in 1905. "Narrow sense" means that it only applies to inertial reference frames. Special relativity includes not only a series of inferences such as time expansion, but also the transformation of Maxwell-Hertz equation. Special relativity requires the use of mathematical tools that introduce tensors. Special relativity is an extension of Newton's theory of time and space. To understand the special theory of relativity, we must understand four-dimensional space-time, and its mathematical form is Minkowski geometric space. Second, general relativity General relativity describes the theory of gravitational interaction between substances. It is based on Einstein's completion in 19 15 and its publication in 19 16. This theory first interprets the gravitational field as the curvature of space-time. Einstein's general theory of relativity has a very important application in astrophysics: it directly deduces that some massive stars will eventually become black holes-some areas in space-time are so distorted that even light cannot escape; The mass of a star collapsing into a black hole is due to the Indian physicist Chandrasekhar-Chandrasekhar limit (the upper mass limit of a white dwarf). Photoelectric effect is an important and magical phenomenon in physics. Under the irradiation of electromagnetic waves above a certain frequency, electrons in some substances will be excited by photons to form current, that is, photogenerated electricity. The photoelectric phenomenon was discovered by German physicist Hertz in 1887, and Einstein put forward a correct explanation. In the process of scientists studying photoelectric effect, physicists have a deeper understanding of the quantum properties of photons, which has a great influence on the concept of wave-particle duality. Fourth, conservation of energy Conservation of energy is a physical term. Energy will neither be produced out of thin air nor disappear out of thin air. It can only be transferred from one object to another, and the forms of energy can also be converted to each other. This is the summary of energy, called the law of conservation of energy. It was discovered independently from different sides by more than 10 scientists from different occupations in five countries. Meyer, Joule and Helmholtz are the main contributors. It is one of the most basic laws in natural science, and scientifically expounds the view that motion cannot be destroyed. V. Cosmic constant 19 17. Einstein used his gravitational field equation to examine the universe as a whole. In order to explain the existence of a static universe with non-zero density of matter, he introduced a term in the field equation that is proportional to the metric tensor, which is represented by the symbol λ. This proportional constant is very small and can be ignored at the galactic scale. λ is only meaningful at the cosmic scale, so it is called the cosmological constant. Baidu Encyclopedia-Albert Einstein

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What inventions did Einstein have?

Einstein was not an inventor, so he didn't invent anything. He did put forward many theories, such as the theory of relativity, and many things were invented on his theory. He is a physicist who mainly studies physical theory and has many outstanding physical achievements. Einstein's achievements are as follows: Einstein put forward relativity and general relativity; The photoelectric effect was discovered, and the law of conservation of energy was studied more prominently. Although these two laws have been discovered one after another, people think that they are two unrelated laws, each of which explains different natural laws. Some people even think that the law of immortality of matter is a chemical law, and the law of conservation of energy is a physical law, belonging to different scientific categories. Einstein thought that the mass of matter is a measure of inertia and energy is a measure of motion. Energy and mass are not isolated from each other, but are interrelated and inseparable. The change of the mass of the object will change the energy accordingly; And the change of the energy of the object will change the mass accordingly. Einstein put forward the famous formula of mass and energy in the special theory of relativity: E=mc? E stands for energy, m stands for mass and c stands for the speed of light. The approximate value is 3× 10 8m/s, which shows that increasing mass can create energy! )。 : Albert Einstein (1879.3.14-1955.4.18) is a Jewish physicist. Einstein was a pacifist and humanist, and became a democratic socialist in his later years. He once said: "I think Gandhi's view is the most enlightened of all politicians in our period." We should work hard in his spiritual direction: not to achieve our goals through violence, but not to form an alliance with the forces you think are evil. "Einstein opposed materialism, McCarthyism and racism. He is also one of the founders of the German Liberal Democratic Party.