# Your Daily Equation #27: Curvature and Parallel Motion | Summary and Q&A

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May 13, 2020
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World Science Festival
Your Daily Equation #27: Curvature and Parallel Motion

## TL;DR

Understanding how space is curved is crucial in Einstein's theory of relativity to explain the motion of objects.

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### Q: How does curvature of space affect the motion of objects?

The curvature of space guides the motion of objects by creating grooves or valleys, which nudge the objects into specific trajectories.

### Q: How did Einstein use the concept of curvature in his theory of relativity?

Einstein described gravity as the curvature of space and time, where the curvature guides the motion of objects rather than a gravitational force.

### Q: How did mathematicians in the 1800s contribute to the understanding of curvature?

Mathematicians like Gauss, Lobachevsky, and Riemann developed mathematical concepts to describe curvature, which Einstein later used in his theory of relativity.

### Q: How is the curvature of space quantified?

The difference between parallel-transported vectors along different trajectories quantifies the curvature of space.

## Summary & Key Takeaways

• Space and time can be curved, and this curvature guides the motion of objects, as described in Einstein's theory of relativity.

• Curvature is important in understanding gravity and how objects move in space.

• A curved environment creates grooves or valleys that nudge objects into specific trajectories.