what is aneroid barometer in long notes
Answers
the Android barometer is invented in 1843 to overcome the disadvantages of Mercury Barometer it is made of metal and therefore light compact and portable it consists of an airtight and partially evacuated metal chamber covered with a thin elastic metal disc any change in the atmospheric pressure causes the dice bulge in words and outwards this displacement is amplified by the special arrangement of leaves which make a needle attached to them to move over the graduated scale the needle rotates clockwise and pressure increases and anticlockwise when pressure decreases for every hundred metre change in altitude the pressure changes by 2.5 mm of Mercury so an Android barometer can be modified to measure attitudes as well the scale on the Barometer that measure altitude in metres is called altimeter.
please mark me brainliest
Answer:
An aneroid barometer is an instrument for measuring pressure as a method that does not involve liquid. Invented in 1844 by French scientist Lucien Vidi,the aneroid barometer uses a small, flexible metal box called an aneroid cell (capsule), which is made from an alloy of beryllium and copper.
About Invention
An aneroid barometer is an instrument for measuring pressure as a method that does not involve liquid. Invented in 1844 by French scientist Lucien Vidi,the aneroid barometer uses a small, flexible metal box called an aneroid cell (capsule), which 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. Many models include a manually set needle which is used to mark the current measurement so a change can be seen. In addition, the mechanism is made deliberately "stiff" so that tapping the barometer reveals whether the pressure is rising or falling as the pointer moves. This type of barometer is common in homes and in recreational boats but also used in meteorology, mostly as barograph and pressure instruments in radiosondes.