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.
.... This was the fundamental principle for his General Theory of Relativity, which was published in 1916. Its foundation is that the laws of nature in an accelerating frame are equivalent to the laws of a gravitational field. This is known as the Equivalence Principle.In 1915, Einstein proposed a new theory of gravity, which is now called the General Theory of Relativity: In 1666, Sir Isaac Newton had proposed a theory of gravity called Newton's Universal Law of Gravitation.his was the fundamental principle for his General Theory of Relativity, which was published in 1916. Its foundation is that the laws of nature in an accelerating frame are equivalent to the laws of a gravitational field.