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What does 1012 MB pressure mean?
mb is a unit of measurement for pressure, 1 mb is 0.001 bar. mb is an abbreviation for millibar 1 bar is roughly atmospheric pressure
Atmospheric pressure in context of sound?
The instantaneous sound pressure is the deviation from the local ambient pressure po caused by a sound wave at a given location and given instant in time. The effective sound pressure is the root mean square of the instantaneous sound pressure over a given interval of time (or space). Total pressure is given by: p-total = po + p-osc where: po = local ambient atmospheric (air) pressure, p-osc = sound pressure deviation. The standard atmosphere is a unit of pressure and is defined as being equal to po = 101325 Pa. Sound pressure level (SPL) or sound level is a logarithmic measure of the effective sound pressure of a sound relative to a reference value. It is measured in decibels (dB) above a standard reference level. The commonly used reference sound pressure level in air of 0 dB is equivalent to the sound pressure of p = 20 µPa RMS, which is usually considered the threshold of human hearing at 1 kHz. The threshold of of pain has a level of about 137.5 dB equivalent to a sound pressure of 150 Pa.
What does 1025.79 HPA mean?
1025.79 hPa stands for 1025.79 hectopascals, which is a unit used to measure atmospheric pressure. It indicates the pressure exerted by the weight of the air above a specific point on Earth's surface. Typically, higher pressure values like this are associated with stable and fair weather conditions.
What is atmospheric pressure based on?
What do you mean "... based on"? The athmosperic pressure is "weight of air" and it can be measured. Strikly speaking: "force per unit area exerted against a surface by the weight of air above that surface at any given point" (wikipedia) Ap could be given in force/area units for example lb/sq ft, kg/sq meter etc.
What does it mean when the atmospheric pressure at a place fall suddenly?
When atmospheric pressure falls suddenly at a place, it typically indicates an approaching low-pressure system or storm. This can lead to changing weather conditions, such as strong winds, precipitation, and potentially severe weather like thunderstorms or hurricanes. People may experience symptoms such as headaches or joint pain due to the change in pressure.
Can mean effective pressure of an automobile engine in operation be less than the atmospheric pressure?
Yes, the mean effective pressure (MEP) of an automobile engine in operation can be less than atmospheric pressure, particularly in engines operating under certain conditions, such as during idling or when experiencing a vacuum in the intake manifold. This situation can occur when the engine is not generating sufficient power or when the throttle is partially closed, leading to reduced intake air pressure. However, for efficient power generation, engines typically operate at MEP values greater than atmospheric pressure during normal operation.
Standard pressure is what?
It is mean atmospheric pressure at sea level.
Air pressure is due to what?
an air compressor Or gravity if you mean atmospheric pressure.
What is Break mean effective pressure?
overall effective pressure within the chamber is called bmep
When a pressure is measured as 1016mb what does that mean?
That would be slightly higher than the 'normal' atmospheric pressure of 1013mb
What does it mean when the atmospheric pressure at place fall suddenly?
A drop in pressure usually indicates bad weather.
What does the abbreviation Hg mean in meteorology?
Inches of mercury, as it relates to atmospheric pressure.
What does the pressure units in weather mean?
It refers to the atmospheric pressure which, in this case, is measured in inches of Mercury on a mercury barometer
What gauge measures both vacuum and pressure?
Gauge pressure usually refers to the pressure difference between ambient, atmospheric pressure and the pressure in a vessel or line. A gauge pressure of zero would mean that the vessel or line was at atmospheric pressure. Normally the pressures of interest are ABOVE atmospheric so the gauge pressure is positive. Vacuum gauge pressure measures how far BELOW atmospheric pressure a vessel or line is. As such vacuum gauge pressure may be measured as a negative number - or for convenience it may be reported as a positive number with the caveat that it is "vacuum gauge pressure", meaning that the reported pressure is how far atmospheric pressure is above the pressure in the vessel or line.
Is the pressure inside the balloon equal to the atmospheric pressure?
Think about this: if the pressure WERE equal, what would happen in the instant when you open the neck of the balloon and whatever pressure is on the inside meets the pressure that is on the outside (atmospheric pressure)? In your experience, what DOES happen?
What does it mean if your kneecaps tickle?
In some people, it signals rain. It is the change in atmospheric pressure.
What does the pressure units 30.03 in weather mean?
It refers to the atmospheric pressure which, in this case, is measured in inches of mercury on a mercury barometer
