AOA is one of the most important parameters for understanding airplane performance and handling (see What Is Angle of Attack?) because a typical wing has a limited range of angles of attack over which it can function efficiently. In its simplest form, lift is a function of speed, air density, wing area, and AOA.
Day trading is speculation in securities, specifically buying and selling financial instruments within the same trading day. Strictly, day trading is trading only within a day, such that all positions are closed before the market closes for the trading day. Many traders may not be so strict or may have day trading as one component of an overall strategy. Traders who participate in day trading are called day traders.
Day Trading Basics. Day traders buy and sell stocks on the same day, trying to profit from daily fluctuations of stock prices. For example, a day trader might purchase stock for $35.50 a share and sell it a couple of minutes later for $35.60 a share, at a profit of 10 cents per share.If the stock's price fell back to $35.50 later in the day, the trader might buy more shares in hope of another price increase.Day traders can buy and sell the same stock several times in the say day.owever, the stock market is fluid, allowing investors to buy and sell a stock on the same day or even within the same hour or minute.