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I don't think there is a good answer to this question. Until just recently, almost nothing was known of its atmosphere. Its atmosphere is constantly being generated from its mass, but due to the heat and solar wind, it is almost immediately lost. I presume that means the pressure varies greatly from time to time, as well as from the dayside to the nightside. I hope that helps. I have something to say too! That person ^ had a good point but i have the real answer... The daily Barometric pressure on Mercury is Max Barometric Pressure: 291.0 (inHg-27)*100 Average Barometric Pressure: 291.0 (inHg-27)*100 Current Barometric Pressure: 291.0 (inHg-27)*100 my source.. http://wb9tlh.ampr.us/weather/barometric_pressure/barometer.html
What else can I help you with?
How does the weight of mercury in barometer tube compared with weight of equal cross section of air from sea level to top of atmosphere?
The weight of mercury in a barometer tube is significantly greater than the weight of an equal cross section of air from sea level to the top of the atmosphere. This is due to the much higher density of mercury compared to air. The weight of the mercury column in the barometer creates the atmospheric pressure that is measured.
An aneroid barometer is different from a mercury barometer in that it?
An aneroid barometer, invented by the French 19th century engineer and inventor Lucien Vidie, uses a small, flexible metal box called an aneroid cell. This aneroid capsule (cell) is made from an alloy of beryllium and copper. The evacuated capsule (or usually more capsules) is prevented from collapsing by a strong spring. Small changes in external air pressure cause the cell to expand or contract. This expansion and contraction drives mechanical levers such that the tiny movements of the capsule are amplified and displayed on the face of the aneroid barometer.A mercury barometer has a glass tube of at least 84 cm in height, closed at one end, with an open mercury-filled reservoir at the base. The weight of the mercury creates a vacuum in the top of the tube. Mercury in the tube adjusts until the weight of the mercury column balances the atmospheric force exerted on the reservoir. High atmospheric pressure places more force on the reservoir, forcing mercury higher in the column. Low pressure allows the mercury to drop to a lower level in the column by lowering the force placed on the reservoir. Since higher temperature at the instrument will reduce the density of the mercury, the scale for reading the height of the mercury is adjusted to compensate for this effect.
Why is the value of atmospheric pressure compared to mercury?
The common method to measure atmospheric pressure employs an inverted column submerged in a fluid to determine the level at which the column has to be raised to equalize the external atmospheric pressure and the internal column pressure. The height at which the fluid inside the column ceases to increase is correlated to atmospheric pressure. Due to mercury's high density, this level is on the order of inches (~30 inches of mercury at atmospheric pressure). If water were to be used the column would have to be ~32 feet tall in order to develop the equalized pressures between the column and atmosphere.
How high would the level be in an alcohol barometer at normal atmospheric pressure?
In an alcohol barometer, the alcohol level would rise to about 13.6 inches at normal atmospheric pressure.
How Does atmopheric pressure work?
Atmospheric pressure is the weight of the air pressing down on the Earth's surface due to gravity. It is measured using a barometer in units such as millibars or inches of mercury. High pressure systems usually bring fair weather, while low pressure systems are associated with stormy weather.
What measures a barometer with Mercury?
A barometer that uses mercury measures air pressure by monitoring the height of the mercury column in a tube. As air pressure changes, the mercury level rises or lowers in response. This instrument is called a mercury barometer.
What weather will accompany a decrease in the height of the mercury column in a mercury barometer?
the atmospere can not support the greater height column and the column of mercury will drop to the level in which the atmospere can support
When the height of the mercury in a barometer is 29.92 inches the barometric pressure is?
When the height of the mercury in a barometer is 29.92 inches, the barometric pressure is equivalent to standard atmospheric pressure at sea level, which is 1013.25 millibars or 14.7 pounds per square inch (psi).
What is an ivory point in fortins barometer?
The ivory point in a Fortin barometer is a short (typically about 1 cm) conically-shaped piece of ivory positioned with its apex pointing vertically downwards just above the surface of the mercury in the barometer's reservoir. It is positioned accurately during manufacture so that the tip of the ivory is in exactly the same horizontal plane as the zero mark of the scale which measures the height of the mercury column, and is known as the Fiducial Point. Before reading the height of the mercury column, a user of the baromerter adjusts the level of mercury in the reservoir until its surface just touches the ivory point, at which level the height scale will give an accurate reading.
How is the can in the pan of water similar to the mercury barometer?
Both the can in the pan of water and the mercury barometer function based on the principle of atmospheric pressure. In both cases, changes in atmospheric pressure will cause a corresponding change in the level of water or mercury in the device. The height of the water or mercury serves as an indicator of the atmospheric pressure at that moment.
When climbing a mountain with a barometer will the mercury level decrease or increase?
As you climb a mountain, the atmospheric pressure decreases with altitude, causing the mercury level in the barometer to decrease. This is because there is less air pressing down on the mercury in the barometer as you ascend, leading to a lower reading.
Where the mercury barometer is used?
at sea level to messure air.
What is a mercury barometer used for?
Mercury barometer is used for measuring atmospheric pressure. Because atmospheric pressure changes with distance above or below sea level, a barometer can also be used to measure altitude.
When air pressure decreases the mercury in a barometer?
The mercury rises. The lower atmospheric pressure allows the mercury to drop in level.
What did the first barometer look like?
The first barometer was a mercury barometer invented by Evangelista Torricelli in 1643. It consisted of a glass tube filled with mercury inverted in a dish of mercury. As atmospheric pressure changed, the mercury level in the tube would rise or fall, allowing for the measurement of air pressure.
What are the uses of mercury barometers?
Mercury barometer is used for measuring atmospheric pressure.Because atmospheric pressure changes with distance above or below sea level, a barometer can also be used to measure altitude.Read more: Uses_of_mercury_barometer
How does the weight of mercury in barometer tube compared with weight of equal cross section of air from sea level to top of atmosphere?
The weight of mercury in a barometer tube is significantly greater than the weight of an equal cross section of air from sea level to the top of the atmosphere. This is due to the much higher density of mercury compared to air. The weight of the mercury column in the barometer creates the atmospheric pressure that is measured.
