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He calculated the amount of time it would have taken for tidal friction to give Earth its current 24-hour day.His value of 56 million years added additional evidence that Thomson was on the right track.
Geologists quickly realized that this upset the assumptions underlying most calculations of the age of Earth.
According to modern biology, the total evolutionary history from the beginning of life to today has taken place since 3.5 to 3.8 billion years ago, the amount of time which passed since the last universal ancestor of all living organisms as shown by geological dating.
In a lecture in 1869, Darwin's great advocate, Thomas H.
In the mid-18th century, the naturalist Mikhail Lomonosov suggested that Earth had been created separately from, and several hundred thousand years before, the rest of the universe. In 1779 the Comte du Buffon tried to obtain a value for the age of Earth using an experiment: He created a small globe that resembled Earth in composition and then measured its rate of cooling.
This led him to estimate that Earth was about 75,000 years old.