Body language uncertainty. This could also mean that they are thinking hard and may be unsure of what to say next. What you communicate through your body language and nonverbal signals affects how others see you, how well they like and respect you, and whether or not they trust you. Unfortunately, many people send confusing or negative nonverbal signals without even knowing it. When this happens, both connection and trust are damaged. Oculesics, a subcategory of body language, is the study of eye movement, eye behavior, gaze, and eye-related nonverbal communication. As a social or behavioral science, oculesics is a form of
Wide-body aircraft wake turbulence is generally related to the weight of an aircraft, these categories are based on one of four weight categories: light, medium, heavy, and super. Due to their weight, all current wide-body aircraft are categorized as "heavy", or in the case of the A380 in U.S. airspace, "super". The wake-turbulence category also is used to guide the separation of aircraft. Super- and heavy-category aircraft require greater separation behind them than those in other categories. In some countries, such as the United States, it is a requirement to suffix the aircraft's call sign with the word "heavy" (or "super") when