Question

What are gravitational waves?

Answer 1

Definition

1. Gravitational waves are 'ripples' throughout space-time created by some of the Universe's greatest destructive and intense phenomena.
2. Whenever things move, the curvature of spacetime adjustments and these modifications spread as gravitational waves.
3. Whereas a gravitational wave is a stretching and compression of space, it may be detected by measuring the difference in length between two objects.
4. In his general theory of relativity, Albert Einstein hypothesized the presence of gravitational waves in 1916.

Frequency of gravitational waves

1. The frequency of gravitational waves is substantially lower than those of the electromagnetic spectrum.
2. As a result, their wavelengths are substantially greater, ranging from hundreds of kilometers to perhaps the whole length of the Universe.