# Mysterious Universe – Gravitational Waves(I)

Today let us take a look at the magical phenomena in the universe and give you scientific explanations. Scientists have gone through countless years to study the mystery of the universe. They have gone through countless obstacles and overcome many difficulties. So far, they have accumulated a lot of experience and knowledge. Let us first look at gravitational waves.

**What is gravitational waves**

In physics, gravitational waves refer to ripples in the space-time bend,square steel tubing for sale which propagate outward from the radiation source through the form of waves, which transmit energy in the form of gravitational radiation.

In 1916, Einstein predicted the existence of gravitational waves based on general relativity. The existence of gravitational waves is the result of Lorentz invariance of general relativity, because it introduces the concept of finite velocity of interaction.

In contrast, gravitational waves cannot exist in Newton’s classical theory of gravitation, because Newton’s classical theory assumes that the interaction of matter propagates at infinite speed.

When a gravitational wave passes through an observer, the observer will find that time and space are distorted due to strain effect. When gravitational waves pass through, the distance between objects increases and decreases rhythmically. The intensity of this effect is inversely proportional to the distance between the sources of gravitational waves.