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In physics, spacetime is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams are useful in visualizing and understanding relativistic effects such as how different observers perceive where and when events occur.
31. März 2024 · Space-time is a single concept that unites space and time, first proposed by Minkowski in 1908 to explain Einstein's special theory of relativity. Learn how space-time is curved by gravity, how it affects the paths of particles and light, and how it relates to cosmology and black holes.
- The Editors of Encyclopaedia Britannica
9. Mai 2018 · Spacetime is the system of space and time that emerges from quanta, the fundamental building blocks of nature. Physicists have been trying to unify gravity and quantum mechanics with spacetime, but they face challenges such as the information paradox of black holes and the microscopic structure of space.
- George Musser
- 2018
Spacetime is a mathematical model that combines space and time into a single continuum. Learn how spacetime is measured, transformed, and bent by different observers and phenomena.
- Who Discovered space-time?
- How Space-Time Works
- What Scientists Still Don't Know
- Additional Resources
The famous physicist Albert Einstein helped develop the idea of space-time as part of his theory of relativity. Prior to his pioneering work, scientists had two separate theories to explain physical phenomena: Isaac Newton's laws of physics described the motion of massive objects, while James Clerk Maxwell's electromagnetic models explained the pro...
Nowadays, when people talk about space-time, they often describe it as resembling a sheet of rubber. This, too, comes from Einstein, who realized as he developed his theory of general relativity that the force of gravitywas due to curves in the fabric of space-time. Massive objects — like the Earth, sun or you — create distortions in space-time tha...
Despite its intricacy, relativity remains the best way to account for the physical phenomena we know about. Yet scientists know that their models are incomplete because relativity is still not fully reconciled with quantum mechanics, which explains the properties of subatomic particles with extreme precision but does not incorporate the force of gr...
Read more about Einstein's space-time on Stanford University's Gravity Probe B.Paul Sutter explains why Einstein's theory of relativity is true, for Space.com.Watch: "Are Space and Time An Illusion?" From PBS Space Time.In this guest lecture, he describes how the most accomplished physicists of the mid-to-late 19 th century were thinking about motion of bodies through space and time, and how, at the end of that century, a rather young and very little-known person named Albert Einstein began asking similar questions but often in very different ways. (01:13:40)
Learn about the concept of space-time in physics, which combines space and time into a single entity. Explore the postulates, problems, and consequences of relativity theory, and the experiments that support it.
