What does e&h ultrasonic flow meter | e mean?

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What is E?

e=2. Natural constant, is a constant in mathematics, an infinite non cyclic decimal, and a transcendental number, approximately 2.71828, which is expressed as Iim (1+1/x) x, x →or Iim (1+z) 1/z, z → 0. It is an infinite non cyclic decimal and a transcendental number. e， As a mathematical constant, it is the base of a natural logarithmic function. Sometimes referred to as Eulers number, named after the Swiss mathematician Euler; There is also a relatively rare name, Napiers constant, in honor of Scottish mathematician John Napiers introduction of logarithms. It is like pi and the imaginary unit i, e, which are one of the most important constants in mathematics. Extended information: The origin of e: One of the most intuitive methods is to introduce an economic name "compound interest". The compound interest rate method is a method of calculating interest. According to this method, in addition to the interest calculated based on the principal, the new interest can also generate interest, so it is commonly known as "interest rolling", "Lvdagur (Glutinous Rice Rolls with Sweet Bean Flour)" or "interest overlapping". The denser the interest calculation cycle, the faster the wealth growth, and the longer the term, the more obvious the compound interest effect will be. Before introducing the compound interest model, try to take a look at the more basic exponential growth model. Most of the bacteria in the late registration system reproduce through binary division. Assuming that a certain bacterium divides once a day, which means a growth cycle of one day, the total number of bacteria per day is twice that of the previous day. If it splits after x days (or x growth cycles), it is equivalent to flipping

What does 2. e mean? The essence of the natural constant e (also known as the natural base, natural logarithm base, Euler number, Napier constant, etc.) is the "unit cyclic modulus". Concept one: The meaning of the constant e is the limit bridge value that can be reached by a continuous doubling of growth per unit time. The base e of natural logarithm is given by an important limit. We define that when n approaches infinity, e is an infinite non cyclic decimal with a value of approximately 2.7..., and it is a transcendental number. The following limit formula is also one of the definitions of e. The reason why the number e is very special lies in three points: the derivative of the logarithm ln (x) with e as the base is 1/x. Its exponential function e ^ x is the only function that is equal to its derivative except for the zero function. Eulers formula, i.e. e ^ (i * pi)+1=0. So many times, logarithmic and exponential functions based on e have some special properties and have many applications in natural science. I think nature here refers to natural science, not th

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