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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.
An aneroid barometer uses a metal cell sealed in a partial vacuum to determine atmospheric pressure, while a Mercury barometer uses a column of mercury in a glass tube. This makes the aneroid barometer more portable and less susceptible to breakage compared to the mercury barometer.
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An aneroid barometer is different from a mercury barometer in that it does not contain?
An aneroid barometer does not contain mercury. Instead, it uses a small, flexible metal box called an aneroid cell to measure air pressure changes. Aneroid barometers are safer and more portable than mercury barometers.
Which statement accurately describes a difference between a mercury barometer and an aneroid barometer?
A mercury barometer uses a column of mercury to measure atmospheric pressure, while an aneroid barometer uses a flexible metal box to measure pressure changes. Mercury barometers are more accurate but require careful handling due to the toxic nature of mercury, while aneroid barometers are portable and safer to use.
What type of barometer was invented first the aneroid or the mercury?
The mercury barometer was invented first, in 1643 by Evangelista Torricelli. The aneroid barometer was invented later, in 1844 by Lucien Vidi.
Types of Barometers?
The two common types of barometers are mercury barometers, which use the height of mercury in a column to measure atmospheric pressure, and aneroid barometers, which utilize a flexible metal membrane to detect and measure pressure changes without using liquid. Digital barometers are also becoming more popular, using electronic sensors to measure pressure.
What are two advantages of aneroid barrometer over mercury barrometer?
Two advantages of an aneroid barometer over a mercury barometer are that aneroid barometers are generally more portable and do not pose a risk of mercury exposure if broken, making them safer for handling. Additionally, aneroid barometers do not require the use of toxic mercury, which is better for the environment.
What is the difference between Mercury barometer and a aneroid barometer?
their spelling is different.
An aneroid barometer is different from a mercury barometer in that it does not contain?
An aneroid barometer does not contain mercury. Instead, it uses a small, flexible metal box called an aneroid cell to measure air pressure changes. Aneroid barometers are safer and more portable than mercury barometers.
What is the difference between the aneroid barometer and a mercury barometer?
An aneroid barometer measures air pressure using a flexible metal box called an aneroid cell, whereas a mercury barometer uses a column of mercury to measure air pressure. Aneroid barometers are more portable and do not use toxic mercury like mercury barometers.
Which statement accurately describes a difference between a mercury barometer and an aneroid barometer?
A mercury barometer uses a column of mercury to measure atmospheric pressure, while an aneroid barometer uses a flexible metal box to measure pressure changes. Mercury barometers are more accurate but require careful handling due to the toxic nature of mercury, while aneroid barometers are portable and safer to use.
What do mercury barometers and aneroid barometer do?
They both measure air pressure, but in different ways
What type of barometer was invented first the aneroid or the mercury?
The mercury barometer was invented first, in 1643 by Evangelista Torricelli. The aneroid barometer was invented later, in 1844 by Lucien Vidi.
Types of Barometers?
The two common types of barometers are mercury barometers, which use the height of mercury in a column to measure atmospheric pressure, and aneroid barometers, which utilize a flexible metal membrane to detect and measure pressure changes without using liquid. Digital barometers are also becoming more popular, using electronic sensors to measure pressure.
What are two advantages of aneroid barrometer over mercury barrometer?
Two advantages of an aneroid barometer over a mercury barometer are that aneroid barometers are generally more portable and do not pose a risk of mercury exposure if broken, making them safer for handling. Additionally, aneroid barometers do not require the use of toxic mercury, which is better for the environment.
What is the most commonly used barometer?
The most commonly used barometer is the mercury barometer.However, it is not easy to transport but it gives more accurate results. Another type of barometer is Aneroid barometer which is easy to transport and handle.
Which liquid is used in an aneroid barometer a mercury b alcohol c none?
mercury
What is an aneroid barometer called?
A portable barometer that uses a small flexible metal box instead of liquid is called an aneroid barometer.
What is the difference between how air pressure is indicated in a mercury barometer and an aneroid barometer?
Usually no difference at all. They can both move a pointer around a circular scale. The scale can be calibrated in both Inches of Mercury (InHg) or Millbars (Mb). An aneroid system can lend itself more easily to a digital display.
