Our fellow, Dr Oday, holding a mercury barometer, that’s > 40 year-old and we used to measure ambient pressure in our PFT lab@InterfaithMed. No one is using a mercury barometer anymore in this digital world@accpchest#CHESTChallenge2019pic.twitter.com/ZprLTsAtJX ...
What year was the barometer invented? Who invented the atmospheric steam engine? Who first invented the lightbulb? Who invented the solar calendar? Who invented the first telescope? Who invented the electric lightbulb first? Who invented the ultrasound machine?
It is the atmospheric pressure that supports a column of mercury 1 millimetre high. The unit is named after Evangelista Torricelli, Italian physicist and mathematician, for his discovery of the principle of the barometer in 1643.Definition: Inch of mercury...
HistoryAlthough mercury is known from early times and was used by alchemists, its first modern scientific applications date back to 1643 when Torricelli used it in the barometer to measure pressure and about eight decades later Fahrenheit used it in the thermometer to measure temperature. Before thi...
What is the density of mercury in pounds per cubic inch (lb/in3)? 1 lb = 454g, 1 in = 2.54 cm. Conversion of Units: We may find that measurements and properties are expressed in different units, such that a ruler can measure in terms of centimeters and inc...
If mercury (13.6 g/cm^3) at a height of 745 mm Hg in a mercury barometer is replaced with water (1.00 g/cm^3) under the same conditions, what will be the height of water? A. 0.180 ft B. 2.44 ft C. 33. A 3.9 kg obje...
Mercury is very dense to our senses. Denser than steel, copper and lead. Does it feel heavier than the same volume of steel, if you're used to it? Or can you weigh the full bottle and measure its outer dimensions and estimate the inner? By shaking gently the bottle sidewise, do you...
The instrument for measuring atmospheric pressure, the barometer is calibrated to read zero when there is a complete vacuum. Hence the pressure indicated by the instrument is therefore called absolute pressure. The term pressure gauge is commonly applied to the other instruments used for measuring pre...
It is the atmospheric pressure that supports a column of mercury 1 millimetre high. The unit is named after Evangelista Torricelli, Italian physicist and mathematician, for his discovery of the principle of the barometer in 1643.Definition: Inch mercury...
Although mercury is known from early times and was used by alchemists, its first modern scientific applications date back to 1643 when Torricelli used it in the barometer to measure pressure and about eight decades later Fahrenheit used it in the thermometer to measure temperature. Before this, me...