Prices of a stock will move throughout the day. Investors generally buy a stock they feel is undervalued, and sell a stock they feel is overvalued. For instance, if the price of AAPL is $600 dollars, it means the cost to purchase one share of Apple is $600 dollars.
Einstein quickly realized (or had known all along) that his new theory of gravity was really a theory of the cosmos. In 1917, he wrote a famous paper applying general relativity to the universe as a whole. Today that paper stands as the foundation for modern cosmology.
Einstein: Einstein's Miracle Year. The ambitious Albert Einstein challenges centuries of scientific thought with his new controversial idea, the General Theory of Relativity. Albert Einstein was born in Ulm, Germany on March 14, 1879. Beginning with a flurry of papers in 1905, he turned classical physics on its head with his special and general theories of relativity, which revolutionized scientistsâ understanding of everything from space and time to gravity and energy.