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.
Einsteinâs relativity theory has been proven. Answer: Einsteinâs Relativity theory is actually two related theoriesâthe Special Relativity (SR) theory of 1905 and the General Relativity (GR) theory of 1915. Broadly speaking, both examine the motion of physical bodies in relation to the role of frames of reference.