Space-Time Intervals
Traveling at different speeds alters the experience of space-time intervals, with no objective way to measure them. The relationship between spatial and temporal intervals is governed by a crucial minus sign in the equation, allowing for both large and small intervals to coexist. Understanding this interplay is essential in grasping the principles of special relativity.In this clip
From this podcast

The Science of Everything Podcast
Episode 114: Special Relativity Part 1
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