Body language that exist in all languages. Body language, on the other hand, does not have a grammar system and must be interpreted broadly, instead of having an absolute meaning corresponding with a certain movement, so it is not a language like sign language, and is simply termed as a "language" due to popular culture. In a community, there are agreed-upon interpretations of particular behavior. Interpretations may vary from country to country, or culture to culture. On this note, there is controversy on whether body language is universal. Body language, a subset of nonverbal communication, complements verbal communication in social interaction. In
Well test of volume flowrate e.g., m³/day), formula_3 is the aquifer loss coefficient (which increases with time — as predicted by the Theis solution) and formula_4 is the well loss coefficient (which is constant for a given flow rate). The first term of the equation (formula_5) describes the linear component of the drawdown; i.e., the part in which doubling the pumping rate doubles the drawdown. The second term (formula_6) describes what is often called the 'well losses'; the non-linear component of the drawdown. To quantify this it is necessary to pump the well at several different flow rates (commonly called "steps"). Rorabaugh