In the course of the history of the Midshlandi civilization, there have been three important scientific and technological revolutions.

These three scientific and technological revolutions are all important in the history of the Midshrandi civilization, and each technological revolution is a major leap in the level of science and technology, and at the same time, it also makes the Midshrandi civilization enter an almost new scientific field.

The first scientific and technological revolution was the replacement of manual work by machinery, represented by the emergence of internal energy heat engines such as steam engines, which have been the prime mover of the Midshlandi civilization for hundreds of years, which has fundamentally improved the work efficiency of the Midshlandi civilization and opened a new world of modern physics for civilization. Although the internal combustion engine and steam turbine that appeared after that were the replacement of the steam engine, they still did not go beyond the framework of the first scientific and technological revolution and belonged to the products of the first scientific and technological revolution.

The second scientific and technological revolution took place three hundred years after the first scientific and technological revolution, and after three hundred years of mature development, the Midshlandi civilization has already possessed the basic skills that modern civilization should master. The efficiency of machinery has improved, the theory and practice of various disciplines have shown a blowout development, and new achievements are born in various fields almost every ten years.

However, at this time, a new problem arises, that is, environmental problems and energy problems. Traditional chemical fuels not only pollute the atmosphere, but also provide very limited energy, and people of insight realize that if they continue to use this low-end intermolecular chemical energy, it will increasingly be unable to keep up with the increasing demand for real-world scientific research, and will eventually lead to the abrupt end of the progress of civilization.

The second scientific and technological revolution was the formulation of the theory of relativity and the mass-energy equation.

This revolution raised the energy of the Midshrandi civilization from traditional chemical energy to nuclear energy, and for a time the energy limit no longer existed, and the Midshrandi civilization once again ushered in a period of "freewheeling" energy use. This period. The Midshrandi stepped out of their home planet and left their footsteps in the star system of their home planet for the first time. The age of the universe was opened.

Summing up the height of the development of civilization, the conclusion that can be drawn is: However, the progress of civilization is always positively correlated with the level of energy use.

Five hundred years after the second scientific and technological revolution and the cosmic age, the footprints of the Midshlandi civilization have spread all over the star system where the parent star is located, and for them, there is no unexplored area in this star system, so they set their sights on a broader river system.

But at this time, a moat crossed in front of them, and that was energy!

For long distances of more than 10 light-years, ordinary nuclear energy can no longer guarantee large-scale voyages, and a large number of energy supply stations were set up in the early days, but the consequences of this soon became apparent -- the huge number of supply stations could not be effectively maintained, or the burden of maintenance was extremely heavy! In addition, the "theory of relativity" proposed by the scientists of Midshrandi limited the upper limit of speed in the universe. Knowing that there is a constant speed of the universe, the speed of light is already the fastest speed that can be achieved in the universe.

Although the life sciences of the Midshlandi civilization are extremely developed, and the average life expectancy of the average Midshrandi can reach 1,000 years, it is still beyond the power of several years or even more than ten years to make a voyage. However, with the continuous improvement of the "theory of relativity", people know that although the upper limit of the speed of the universe is a constant, it can be circumvented through guò "trickery", that is, it moves at a low speed relative to the universe and bends the surrounding space. In this way, you can take a shortcut and achieve a virtual faster-than-light flight.

Scientists in Midshrandi call this technique curvature navigation, but curvature navigation requires a huge amount of energy, and it is difficult to provide enough energy for general heavy nuclear fission or light nuclear fusion.

Then. The third scientific and technological revolution broke out.

Middleshrandi scientists are no longer content to go from fission or fusion to just a small amount of debris to energy. In their eyes, whether it is heavy nuclear fission or light nuclear fusion, they are like playing with cake!

Fission of heavy nuclei is most likely to occur. Because it's like artificially breaking a piece of cake in half, as long as there is an external force. For example, if a neutron with enough energy bombards it, it will still easily shatter. Most of the fragmentation process is complete, they will be divided into two or in a few cases into three or four parts, but the corners and corners will inevitably have some fine powder broken more completely, according to E=mc^2, these more completely fragmented edges and corners will be released from matter to energy.

Light nuclear fusion is relatively difficult, they are in the case of a strong external force collision to release energy, the image of the metaphor is still a cake, this time it is two pieces, when someone throws them against each other, the fragmentation produced by the collision must be more complete than a piece of cake split in half, boom, debris scattered, so the energy released by light nuclear fusion far exceeds that of heavy nuclear fission.

Of course, if you want to crack the hard atomic nuclei, the energy and conditions at the beginning are extremely harsh, usually only the high-pressure and high-heat environment inside the huge star can spontaneously carry out light nuclear fusion, and if you want to produce light nuclear fusion, you generally detonate heavy nuclear fission first, and then induce light nuclear fusion.

Whether it's heavy nuclear fission or light nuclear fusion, the energy released is all around the corners, and the scientists at Midshrandi wondered how great it would be if they could turn all the atoms that collided into energy. Further, wouldn't it be even more wonderful if all matter could be used as a precursor for the transformation into energy?

The mass-energy equation was proposed in the second scientific revolution, which shows that the magnitude of energy is equal to the product of mass and the square of the upper velocity of the universe. It was not until the third scientific and technological revolution that the Midshrandi civilization found a way to make full use of the mass-energy equation, and the outbreak of the third scientific and technological revolution solved the energy problem for the Midshrandi civilization to enter the curvature navigation, and the Midshrandi civilization truly entered the era of the universe.

And because of the abundant energy, more powerful curvature machines are constantly being manufactured, and the understanding and use of space are also constantly enhanced. Three thousand years after the Third Scientific and Technological Revolution, that is, 100,000 years ago, the Midshrandi people found that the star system where the home star was located was about to decline, so it took 300 years to find a habitable planet 100,000 light-years away from the home star and began the migration journey.

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"That's the general history of our mother civilization!" said Jaynere, the projector, with pride.

"After coming to a new planet. The mother civilization once again burst into unprecedented potential, and the fourth scientific and technological revolution broke out in the following millennium!"

"Is it energy again?" asked Su Yuan in surprise.

The previous scientific and technological revolutions can be said to be closely related to the use of energy. The first scientific and technological revolution made effective use of the chemical bond energy between molecules and released the most basic microscopic energy, and the second scientific and technological revolution used nuclear energy. The transformation between mass and energy of the mass-energy equation was initially realized, and the third scientific and technological revolution made full use of the mass-energy equation to realize the complete transformation between mass and energy, which opened up a new research in the field of space.

If the fourth scientific and technological revolution is still related to energy, then what level of energy can be found in the case that the mass-energy equation has been fully utilized?

"Why not?" Jaynere's handsome face showed a bright smile, "This Fourth Technological Revolution is the greatest scientific and technological discovery in the history of the Mother Civilization! It is unsurpassable in a certain way, after the Fourth Technological Revolution, until the decline of the Mother Civilization fifty thousand years later. There is no more important scientific and technological achievement than it can surpass!"

Su Yuan was shocked, and his face couldn't help but change: "What is the fourth scientific and technological revolution?"

Jayne Rui fell into the sad history of the decline of the mother civilization, and was silent for more than ten seconds before he said faintly: "That is the discovery of the void energy equation!"

The energy equation and the connection between space and energy Su Yuan couldn't help but be stunned.

Jayne Ray said: "In the thousand years after arriving on the new planet, a genius scientist appeared in the Midshrandi civilization, and he was inspired by the mass-energy equation.

After intensive research, he came up with a preliminary air-energy equation. It is believed that E = (C.A)n power, where C is a constant of the universe, and under the constraints of the rules of the universe, this constant has a constant magnitude correlation with another constant of the universe, 'the upper speed c'. A is the standard unit length, and n is the number of dimensions. ”

That is, in three-dimensional space. 1 cubic meter of space, if completely converted into energy, is of the 3rd power of C. This C is related to another constant, 'the upper velocity of the universe c', so it should be of the same order of magnitude as c. Maybe 10 to the 7th or 8th power, that's a lot of numbers!"

"The higher the dimension, the more energy per unit volume is converted, and if the high-dimensional space is artificially reduced to a low-dimensional space, an incomparably huge amount of energy will be released!

Su Yuan was already stunned when he heard this, this air-energy equation is really a powerful thing, it is more than a thousand times magnified compared to the mass-energy equation, casually descending a dimension, and the energy released is 100 million times the energy contained in the unit volume of low latitudes!

As far as three-dimensional space is concerned, we must know that there are four-dimensional, five-dimensional, six-dimensional, and even terrifying ten-dimensional space above it! If you touch the realm of ten-dimensional space and lower the ten-dimensional to the three-dimensional where you are located, the difference in energy between this is more than 200,000 times that of 10!

It's just horrible!

"The emergence of the space-energy equation laid the foundation for us, and then the direction of the Midshrandi civilization focused more on the development of space science, and established space as the main direction of our Midshrandi civilization. Of course, even if we are good at space, most of our research in the field of space stays at the level of mathematics, and what can really be effectively used is only developed to reduce the five-dimensional space to the three-dimensional space and release energy. ”

And since the constant C is measured in the universe in three-dimensional space, the space-energy equation is only applicable when the dimensions are higher than 3, and the lower zero-dimensional, one-dimensional, and two-dimensional are not applicable. ”

Su Yuan nodded thoughtfully, the reverence for the Midshrandi civilization in his heart rose to the extreme, but why did such a developed civilization decline?

50,000 years ago, the Middleshrandi civilization collapsed, what was the reason for the collapse of the Middle......shrandi civilization?