In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum.

2025年1月29日 · space-time, in physical science, single concept that recognizes the union of space and time, first proposed by the mathematician Hermann Minkowski in 1908 as a way to reformulate Albert Einstein ’s special theory of relativity (1905). (Read Einstein’s 1926 Britannica essay on space-time.)

2021年5月20日 · According to the best of current physical theories, space-time explains the unusual relativistic effects that arise from traveling near the speed of light as well as the …

2018年6月1日 · Physicists believe that at the tiniest scales, space emerges from quanta. What might these building blocks look like? People have always taken space for granted. It is just emptiness, after...

2022年2月1日 · Spacetime may emerge from a more fundamental reality. Figuring out how could unlock the most urgent goal in physics—a quantum theory of gravity

Spacetime or space–time is a mathematical model that joins space and time into a single idea called a continuum. This four-dimensional continuum is known as Minkowski space. Combining these two ideas helped cosmology to understand how the universe works on the big level (e.g. galaxies) and small level (e.g. atoms).

In physics, spacetime is any mathematical model that combines space and time into a single continuum. It is a mathematical concept used to refer to all points of space and time and their relation to each other.

2024年1月24日 · Ever heard of spacetime? For many of us, learning about this seemingly strange concept muddles what we knew about the physics of space, which we thought were relatively simple. Like me, you’ve probably had a pretty good grasp of …

1.E: Spacetime (Exercises) Thumbnail: Artist concept of Gravity Probe B orbiting the Earth to measure space-time, a four-dimensional description of the universe including height, width, length, and time.

Thus, space and time are effectively interchangeable, and fundamentally the same thing (or at least two different sides of the same coin), an effect which becomes much more noticeable at relativistic speeds approaching the speed of light.