Simply put, Einstein thought that the universe was constant at that time, which was inconsistent with the calculation result of his own general relativity, so he introduced a constant term into the formula to solve this problem.
Later Hubble discovered that the universe was expanding. ...
Einstein removed the cosmological constant, claiming that it was the biggest mistake he made in his life.
However, the current theory shows that the so-called cosmological constant is not meaningless. In order to explain the accelerated expansion of the universe, scientists put forward the theory of dark energy, and accordingly, the cosmological constant was re-added to the equation. ...
High-speed trains are impossible because people can't breathe at high speed and passengers will suffocate. doctor's degree
"High-speed rail travel is impossible because passengers who can't breathe will suffocate." -Dr. Dionysus Ladner, 1793- 1859
Drilling oil? Can you drill out the oil with a drill? Are you out of your mind? -1859 opponents of drake oil exploration.
"Drilling oil? You mean drilling underground to find oil? You are crazy. " Edwin L. Drake tried to recruit workers for his oil drilling project in 1859.
Nothing can make cars develop. Over the years, the principle of internal combustion engine has not improved. -American Journal of Science, 1909
"The fact that cars have reached the limit of development shows that there has been no fundamental improvement in the past year." -Scientific American, 1909
Basically everything that can be invented has been invented. -Charles Deere, Director of the United States Patent Office, 1899
"Everything that can be invented has been invented." -Charles H. Duell, Commissioner of the United States Patent Office, 1899.
I think relativity is as absurd as atomism. -ernst mach, a famous physicist, philosopher, mathematician, fluid mechanics and wave scientist.
"I can accept relativity, just as I can accept the existence of atoms and other similar dogmas." -ernst mach (1838- 19 16)
Any machine heavier than air can't fly. -Inventor of absolute temperature scale, proposer of the first and second formulas of thermodynamics, founder of modern thermodynamics, and Sir Kelvin, President of the Royal Society of Science.
"An aircraft heavier than air is impossible."-Lord Kelvin (1824- 1907)
Radio has no future. -Sir Kelvin
"Radio has no future." -Lord Kelvin (1824- 1907)
X-ray is a deceptive commodity. -Sir Kelvin
"X-rays will prove to be a hoax." -Lord Kelvin, President of the Royal Society, 1895
The electromagnetic storm has nothing to do with sunspots. As for the solar cycle, it is purely coincidental. -Sir Kelvin
"It seems that we may also be forced to conclude that the so-called connection between magnetic storms and sunspots is untrue, and the apparent consistency between the two periods is just a coincidence." -Lord Kelvin, 1892
Americans use telephones, but we don't need them in Britain. Because we have enough child ambassadors. —— william price, Chief Engineer of British Post Office, 1876.
"Americans need telephones, but we don't. We have many boys delivering letters. " -Sir William Price, Chief Engineer of British Post Office, 1876.
Professor Goddard (the pioneer of rocket engineering and the founder of Mr. Qian Xuesen) obviously doesn't understand the principle of action and reaction. There is no pressure object in a vacuum, and he doesn't even know what these high school students should know. -A report of new york Times in 1920. 1969 After Apollo landed on the moon, the report was withdrawn.
"Professor Goddard ... doesn't know the relationship between action and reaction, and he doesn't know that something better than a vacuum is needed to fight against it ... he just seems to lack the knowledge taught every day in high school." -The New York Times's editorial on rocket work in robert goddard. [The New York Times published a retraction-in 1969, when Apollo 1 1 astronauts were on their way to the moon. ]
Landing on the moon or walking on the moon is too difficult for the current technology, and it will take at least 200 years to realize it. -scientific abstracts 1948
"Landing and moving on the moon have brought so many serious problems to mankind that it may take another 200 years for science to solve these problems." -Scientific Abstracts, 1948
Although TV is feasible in theory and technology, from a commercial point of view, TV is nothing and can't make money at all. -Lee Forrest, inventor of vacuum triode, father of radio and father of television, 1926.
Although TV is feasible in theory and technology, I think it is impossible in business and economy. We don't need to waste too much time dreaming of its development. -Lee De Forest, 1926
The recent emergence of "horseless passenger transport" (old cars) is only a luxury for the rich. Of course, its price will drop in the future, but in any case, cars will never be as suitable for the public as bicycles. -Literary Abstracts, 1899
"The ordinary horseless carriage is currently a luxury for the rich; Although its price may drop in the future, it will certainly never be as popular as bicycles. " -Literary Abstracts, 1899
The train speed is increased to 15mph(24km/h), which is too fast and too dangerous! The noise of the train is so loud that it may ignite crops, frighten livestock to death and frighten women and children to cry along the way! Damn it, it's too dangerous I advise you not to take it. -Martin Van Buren, the eighth president of the United States.
"The train car is pulled by the engine at a huge speed of 15 miles per hour. In addition to endangering the lives and limbs of passengers, it also roars through the countryside, igniting crops, scaring livestock and scaring women and children. Almighty God certainly never thought that people would travel at such an amazing speed. " Martin Van Buren
Physics will end in six months. -Max Bonn, Nobel Prize winner, one of the founders of modern quantum mechanics.
"As we know, physics will end in six months." -Max Born, 1928
Air resistance is directly proportional to the cubic power of object velocity. In other words, with our current technology, the speed of an airplane can't be faster than that of a car or a train. —— astronomer william henry pickering of Harvard University Observatory, 19 10.
"The air resistance increases with the square of speed and works as the cube of speed ... Obviously, with our current equipment, there is no hope for the plane to compete with our locomotives or cars for speed." -William H. Pickering, Director of Observatory of Harvard University, 19 10
The plane will get faster and faster. But athletes can regard it as a competition, because airplanes cannot be commercialized. -Chanute, one of the inventors of the airplane and the aviation pioneer of the Wright brothers at the same time, 19 10.
"(Flying) machines will eventually be fast; They will be used for sports, but they should not be regarded as commercial carriers. " - Octave Chanute， 19 10
The energy produced by nuclear reaction is very weak. If you want to get energy in this way, it's a dream. -Rutherford, the father of nuclear physics, 1930
"The energy produced by atomic decomposition is a very bad thing. Anyone who expects to gain energy from the transformation of these atoms is talking nonsense. " -ernest rutherford, 1930
Now we don't even have the slightest evidence of using nuclear energy. —— Einstein, 1932
"There is not the slightest indication that nuclear energy is available." -Albert Einstein, 1932
Alternating current is useless because it is too dangerous and can kill a person like lightning. Direct current is safe. Edison
"fiddling with alternating current is just a waste of time. No one will ever use it. A close call. . . It can kill a person as quickly as lightning. Direct current is safe. " Thomas Edison
I think there may be only five computers in the world that can be sold. Watson, chairman of IBM, 1943
"I think there is a world market of about five computers."-thomas watson, chairman of IBM, 1943.
Actors can just perform. Who the fuck wants to hear their voices? -Harry Werner, founder of Warner Bros.
"Who the fuck wants to listen to actors?" -H.M. Warner, Warner Bros., 1927
640K memory is enough. -Bill Gates, 198 1
"640 thousand pounds should be enough for anyone." -Bill Gates, 198 1
Aids is like a docile kitten, nothing. -1988, Dusberg, professor of biomolecular science at the University of California, Berkeley.
"That virus is a cat." -Dr. Peter Dusberg, Professor of Molecular Biology at the University of California, Berkeley, on HIV, 1988