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The correct answer is True.
What do you mean by atmospheric pressure?
Atmospheric pressure, also called the barometric pressure, force per unit area exerted by an atmospheric column (that is, the entire body of air above the specified area). Atmospheric pressure can be measured with a mercury barometer (hence the commonly used synonym barometric pressure), which indicates height of a column of mercury that exactly balances the weight of the column of atmosphere over the barometer. The atmospheric pressure is also measured using an aneroid barometer, in which the sensing element is one or more hollow, partially evacuated, corrugated metal disks supported against collapse by an inside or outside spring; the change in the shape of the disk with changing pressure can be recorded using a pen arm and a clock-driven revolving drum.
A pressure system is a relative peak or lull in sea level pressure distribution. Pressure systems cause the weather to be experienced locally. Low-pressure systems are associated with band precipitation that minimize the temperature changes throughout the day, whereas, high-pressure systems normally associate with dry weather and mostly clear skies with larger diurnal temperature changes due to the greater radiation at night and greater sunshine during the day. Pressure systems are analyzed by those in the field of meteorology within the surface weather maps.
The leveling bulb is higher than the water level, the pressure in the system is greater than atmospheric pressure.
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