Assertion: vessel's pressure | /r/HasProperty | the weight of air column
Facets:
Source sentences:
text: The atmospheric pressure ( P a ) is the weight of air column whose base is the unit area and its height extends from the sea level to the top of the atmosphere , or it is the air pressure at sea level which is equivalent to the pressure due to weight of mercury column of height 0.76 m and of base area 1 m² at 0° C .
text: The atmospheric pressure is the weight of a column of air above the Earth’s surface per unit , As we go up , the height of this column decreases , so does the pressure ,