In 1643, Evangelista Torricelli invented the first barometer. He figured that if he had a vacuum, an airless space, he could compare the ever-present atmospheric pressure with zero. Torricelli placed a vacuum contained in a glass tube on top of a larger container of mercury. The air pressed ...
The early barometers measured the pressure by the rise or fall of a column of mercury. This mercury barometer was invented back in 1643 by a pupil of Galileo named Evangelista Toricelli. This is the basic instrument use for detecting atmospheric pressure. A simple diagram of a barometer is gi...
Within this frame, Torricelli's mercury esperienza as he called it heralds the birth of modern experimental science through his invention of the first modern barometer. This paper questions this traditional narrative by re-interpreting the archival foundations upon which this account is based. In ...
What is an mercury barometer? noun. a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atm...
Is 29.9 high barometric pressure? A barometer reading of 30 inches (Hg) is considered normal. Strong high pressure could register as high as 30.70 inches, whereas low pressure associated with a hurricane can dip below 27.30 inches (Hurricane Andrew had a measured surface pressure of 27.23 just ...
Pressure can be measured through the use of an instrument called a barometer. One of the oldest forms of a barometer is called the mercury barometer. The use of this instrument for pressure measurement is directly related to the old "mm of Hg" u...
Calculate the volume this gas will occupy if the pressure is changed to 1700 mmHg. A barometer reading is taken and it is 1.1 atm. How many mm of mercury (Hg) is this? A gas cylinder at 45.0^(\circ)C has a pressure...
Torricelli attracted considerable attention when he demonstrated the first mercury barometer to the general public. He is credited with giving the first modern explanation of atmospheric pressure. Scientists at the time were familiar with small fluctuations in height that occurred in barometers. When thes...
An eudiometer is an instrument used to measure the volume change of gases. Early incarnations were meant for measuring the amount ofoxygenin the atmosphere. Made of glass, the eudiometer typically has an elongated tube shape with a measuring scale, similar to a barometer or a thermometer. ...
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