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*LOUDNESS*
(“air pressure”)
(“sound pressure”)
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*symbol* –>
p
P
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*”pressure” is the ‘force’ applied ‘perpendicular’ to the ‘surface’ of an ‘object’ per ‘unit area’ over which that ‘force’ is ‘distributed’*
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(‘gauge pressure’ (also spelled gage pressure) is the pressure relative to the local atmospheric or ‘ambient pressure’)
(various units are used to express ‘pressure’)
(some of these derive from a unit of force divided by a unit of area; the SI unit of pressure, the pascal (Pa), for example, is one newton per square metre; similarly, the pound-force per square inch (psi) is the traditional unit of pressure in the imperial and US customary systems.
(‘pressure’ may also be expressed in terms of standard atmospheric pressure; the atmosphere (atm) is equal to this pressure and the torr is defined as 1⁄760 of this)
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(manometric units such as the centimetre of water, millimetre of mercury and inch of mercury are used to express pressures in terms of the height of column of a particular fluid in a ‘manometer’)
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💕💝💖💓🖤💙🖤💙🖤💙🖤❤️💚💛🧡❣️💞💔💘❣️🧡💛💚❤️🖤💜🖤💙🖤💙🖤💗💖💝💘
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*🌈✨ *TABLE OF CONTENTS* ✨🌷*
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🔥🔥🔥🔥🔥🔥*we won the war* 🔥🔥🔥🔥🔥🔥