# Introduction to LIGO & Gravitational Waves

## Newton, Einstein and Gravitational Waves

But Einstein's Theory of General Relativity - the most commonly accepted description of gravity - asserts that no information can travel faster than the speed of light, including information on the positions of mass in the universe, which is communicated through the gravitational field. General Relativity predicts that a change in gravitational field will travel through the universe at the speed of light. It is exactly these changes in gravitational field that are gravitational waves.

# Contents

Introduction→ Newton, Einstein and Gravitational Waves

"Ripples on Space-time"

Sources of Gravitational Waves:

Continuous

Inspiral

Burst

Stochastic

Detecting Gravitational Waves

Using Multiple Detectors

An Interferometer

LIGO's Interferometer

Advanced LIGO flyer

The Potential of Gravitational Waves