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.
Scalper Traders. Professional day traders that make money in the stock market with high frequency and lower profit are called scalpers. The goal is to take advantage of small inconsistencies in the market in addition to quick movements (changes in value in a matter of seconds or minutes).rofessional day traders that make money in the stock market on a daily basis are considered intraday traders. An intraday trader never holds a position overnight hence the term âintra-dayâ.