Photo: A Torricellian barometer (sometimes called a mercury barometer) is an inverted (upside-down)glasstube standing in a bath of mercury. Air pressure pushes down on the surface of the mercury, making some rise up the tube. The greater the air pressure, the higher the mercury rises. You...
The tube of mercury barometer is 4mm in diameter. How much error does the surface tension cause in the reading? Surface tension of mercury = 540" x "10^(-3) N
Know how matter exerts pressure and learn its definition. Discover what gadget is used to measure air pressure along and how it works . Learn about the various units of pressure and their abbreviations such as atm, millimeters of mercury and Psi. ...
from Chapter 7 / Lesson 2 138K Know how matter exerts pressure and learn its definition. Discover what gadget is used to measure air pressure along and how it works . Learn about the various units of pressure and their abbreviations such as atm, millimeters of mercury and Psi. Rela...
Gascoigne invents the micrometer 1642 Adding Machine invented by Blaise Pascal 1643 Barometer invented by Torricelli 1650 Invention of the first air pump 1656 The pendulum clock was invented by Christian Huygens 1660 The cuckoo clock was first made in Black Forest, Germany 1663 657 Words 3 Pages ...
When removing the plug, the mercury would eventually come to rest at about 760 mm (30 inches) above the surface of the basin – regardless of the height the mercury in the basin or angle of the tube. This device measures the atmospheric pressure and can be used as a barometer (which To...
Barometric Pressure is measured with a barometer. The traditional barometer consists of a column of mercury that will change in height, for the same temperature, because of differences in pressure. The reason for this is that when pressure increases, the weight of ...
The swim bladder, on the other hand, is an organ similar to the stomach, which can inflate with air and allows the fish to achieve buoyancy. As the air pressure changes, so does the pressure on a fish’s swim bladder. It’s something like a natural barometer. ...
THE BAROMETER. The torr, once known as the "millimeter of mercury," is equal to the pressure required to raise a column of mercury (chemical symbol Hg) 1 mm. It is named for the Italian physicist Evangelista Torricelli (1608-1647), who invented the barometer, an instrument for measuring...
Thebarometer works bybalancing the weight of mercury in the glass tube against the atmospheric pressure, much like a set of scales. Atmospheric pressure is basically the weight of air in the atmosphere above the reservoir, so the level of mercury continues to change until the weight of mercury ...