Spatiotemporal curvature

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The curvature of space-time is a physics Terminology. according to General relativity 's explanation, in gravitational field The nature of spacetime is determined by the mass distribution Determined by, the distribution of the object's mass makes the spatiotemporal properties become uneven, causing the curvature of space-time.

Generally speaking, the higher the density of matter, curvature The bigger it is. That is to say, the curvature of spacetime generates gravity, when light passes through some High quality Its route is curved, and it will move along the space-time curved surface formed by massive objects.

Chinese name: Spatiotemporal curvature^[2]

Foreign name: curvature of spacetime^[2]
Type: physics

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In September 2009, the United States Missouri State University Scientists as researchers, using radio telescope The curvature of space-time caused by solar gravity was measured extremely accurately. Scientist Sergey Koperkin and colleagues used Ultra long baseline array The powerful function of the telescope (VLBA) enables the most accurate measurement of the curvature of space-time in history; In view of the influence of the position of stars caused by the solar gravity, the most detailed image has been drawn so far; For description relativity Time dilation And the degree of space warp effect physical quantity ——The measured value of gamma parameter is 0.9998+/-0.0003, which is very close to the value predicted by Einstein "strictly equal to 1".

Role of science

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Spatiotemporal curvature

Once the curvature of space-time is known, the object in space-time path of particle It can be calculated; In other words, the object must follow the direction of curvature. Around the Earth sunlight For example, the mass of the sun determines the curvature Under the influence of this curvature, the earth will orbit around the sun in an almost elliptical orbit. If the curvature is small, the results of Einstein's theory and classical Newton's gravity theory are roughly the same. If there is any difference between the two, observe Data Standing at General relativity This side. Especially when the curvature is large, Newtonian theory Not at all. An important prediction of general relativity is that the vibration of space-time curvature will cause Gravity wave Newton's theory does not have this concept.

Phenomenological explanation

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In November 2012, Canada New Brunswick Benjamin K. Tippett, a mathematician at the university, thought that it seemed to have revealed that in 1928 sailors the pacific ocean The mysterious scene seen on the island. At the end of 1928, Francis Wayland Thurston exposed the mystic's Conspiracy theory The arguments between the lines support his explanation of the encounter of a sailor named Gustaf Johansen on a mysterious island. According to records, Johnson described the adventure of the mysterious island as an "unbelievable" experience.

Researchers believe that the incredible scene seen by Johnson can be explained by the visualization of local curvature bubbles in space-time. In addition, in the records, Johnson also mentioned most of the puzzling descriptions, which involve Geometry , changing horizon Location, etc. Scientists geometric model The simplification of has calculated the incredible scene described by Johansen. Of course, Johansen does not have mental disease Obstacle, because in most cases a psychopath cannot describe such a phenomenon with complex geometry.

Spatiotemporal curvature

On the contrary, without the help of relevant technologies, even a smart person could not understand what Johnson saw, and people did not agree that Johnson inadvertently saw the curvature of space-time and correctly described it at that time. Researchers find that this type of thing needs to create a strange type of space-time curvature through calculation, but unfortunately this aspect is completely unfamiliar to human science. In fact, any civilization that masters and controls such events will be able to easily create warping drive devices and stealth devices, which can facilitate space travel through geometric space-time.^[1]

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