Best Spacetime
Updated Daily
General relativity describes gravity not as a force, but as the curvature of spacetime caused by mass and energy, influencing how objects move within it.
Special relativity, proposed by Einstein, describes how space and time are intertwined for observers in uniform motion, fundamentally altering concepts of simultaneity and length at high velocities approaching the speed of light.
Lorentz invariance dictates that the laws of physics remain unchanged for all observers in uniform motion relative to one another, reflecting the symmetry between different inertial frames of reference.
The Lorentz transformation is a mathematical framework in special relativity that describes how measurements of space and time change between observers in relative motion.
According to Einstein's theory of relativity, time dilation describes how time passes slower for an observer who is moving relative to another observer; the faster the relative speed, the greater the difference.
Gravitational time dilation dictates that clocks in stronger gravitational fields experience slower passage of time relative to those in weaker fields, as predicted by Einstein's theory of general relativity.
Minkowski spacetime combines three spatial dimensions with one time dimension into a single four-dimensional continuum where the speed of light is constant for all observers, fundamentally altering our understanding of space and time.
Relativity of simultaneity dictates that two events perceived as simultaneous in one inertial frame of reference may not be simultaneous for another observer moving relative to the first.
Frame dragging, also known as the Lense-Thirring effect, is where a rotating massive object twists spacetime around it, causing nearby objects and light to be dragged in that rotation's direction.
