These impressive figures are the result of a long-term research on the fossils of ancient green algae. Green algae is one of the most ancient life forms on our planet. We are creatures and most persistent primitive cells not heading eukaryotic.

Earth has two types of dial: one is around you it (create the cycle of day and night) and around the sun (cycle of creation). ND.

Green algae react strongly to the change of day and night. Under the sun, they grow upright and become bright. When not getting enough light, they grow orchids and colored blur. Therefore, understanding the past of algae may help extrapolate the change in length of the day and night period in which they live.

The research team looked at the fossils 1.3 billion years at the foot of Yanshan in northern provinces of Tianjin, China. They show an accurate picture of the rhythm of growth of green algae. Rhythm indicates that the speed of rotation of the Earth 1.3 billion years ago, a far cry from today.

Before the 20th century, scientists also believe that the speed of rotation of the Earth has not changed much over time. However, after further analysis of the sun, moon and nebulae, it was obvious that the earth's rotation rate is slowing due to tidal influence. Within 2,500 years, an average sidereal day has lengthened 0.0024 seconds per century.

Also, the speed of rotation of the earth to bear the seasonal changes caused by the meteorological phenomenon and the gravity of the moon. In addition, the researchers also noted changes intermittently in the Earth's rotational speed (the length of the day led to increases or decreases by about milliseconds in 1-3 years), which is worth particularly after the 1864, 1876, 1898 and 1920.