By A. Chandrasekar
Fundamentals OF ATMOSPHERIC SCIENCE-PHI-CHANDRASEKAR, A.-2010-EDN-1
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The minimum thermometer is usually mounted horizontally and the minimum thermometer is usually reset by turning it upside down, allowing the index to slide down to the end of alcohol. The maximum thermometer also utilizes the mercury-in-glass thermometer. The maximum thermometer has a very narrow constriction in the tube just beyond the bulb which allows the mercury to expand outward whenever the temperature is 20 u BASICS OF ATMOSPHERIC SCIENCE rising but prevents it from contracting back into the bulb when the temperature decreases.
Larger than the average distance traversed by a molecule between two successive collisions in the fluid medium. 7 PHYSICAL LAWS As mentioned earlier, the physical laws of thermodynamics, radiation and fluid dynamics find ready applications in the study of the atmosphere. The principles of thermodynamics are essential to the description of various atmospheric processes. The equation of state of the atmosphere is deduced using the principle of thermodynamics. The first law of thermodynamics, a statement of conservation of energy becomes important when considering situations involving the heating and cooling of the atmosphere.
4(b) Cup anemometer. A different type of wind measuring instrument is the pitot tube anemometer, which measures the excess pressure developed in the air as the air rams into the mouth of a small tube steered into the wind by a wind vane. Since the rammed air is brought to a state of rest, the air loses all its kinetic energy. Using the Bernoulli principle, the excess pressure can be related to the square of the wind speed and the latter can be determined. A more accurate measurement of the horizontal wind speed is obtained from the electrical anemometer.
Basics of atmospheric science by A. Chandrasekar