The theory of relativity
A field of cows inspired Albert Einstein’s theory of relativity, which, according to a calm.com survey, is one of the most important ideas that ever came out of sleep. In his dream, Einstein was telling a farmer about cows being surrounded by an electric fence, but the farmer saw something different. Einstein awakened with the realization that the same event could vary from different perspectives, and the theory of relativity began to take shape. Another Einstein fun fact: his secret to happiness—and it’s genius!
The Periodic Table
Russian chemist Dmitri Mendeleev was exhausted from three days of trying to classify the 56 elements when he decided to sleep on it. “I saw in a dream a table where all the elements fell into place as required. Awakening, I immediately wrote it down on a piece of paper,” Mendeleev wrote in his diary, “Only in one place did a correction later seem necessary.”