Inch of mercury (inHg and ″Hg) is a non-SI unit of measurement for pressure. It is used for barometric pressure in weather reports, refrigeration and aviation in the United States. It is the pressure exerted by a column of mercury 1 inch (25.4 mm) in …

2021年7月1日 · Another typical measurement of atmospheric pressure is called inches of mercury. The scientific abbreviation for mercury is Hg, so inches of mercury would be expressed as “Hg. You may have heard of inches of water as a pressure measurement used in …

1 inch of mercury is the pressure exerted by a 1 inch high column of mercury at 0 °C (32 °F ) Origin: The inch of Mercury was the first accurate measure of pressure. The measurment came about from the invention of mercury manometers, which displayed pressure difference between two fluids as a vertical difference in mercury levels in two ...

Inches of Mercury (or in Hg) Unit of atmospheric pressure used in the United States. The name comes from the use of mercurial barometers which equate the height of a column of mercury with air pressure. One inch of mercury is equivalent to 33.86 millibars or 25.40 millimeters. See barometric pressure.

Use our handy calculator to convert between inches of mercury and other units of pressure. Just type the number to convert into the box and hit the calculate button.

2024年2月27日 · The standard barometric pressure at sea level is 29.92 inches (1,013 millibars) of mercury (also measured as 1 atmosphere). In general, a normal range for barometric pressure is between 28.5 (965 millibars) and 30.7 inches (1,040 millibars) of mercury.

inches of mercury: inches of mercury: millimeters of mercury (torr) millimeters of mercury (torr) millibars: millibars: hecto Pascals: hecto Pascals: kilo Pascals: kilo Pascals: pounds per square inch: pounds per square inch: standard atmosphere: standard atmosphere . What are the formulas for the pressure unit conversion script?

1) One inch of mercury (in Hg) is defined as that pressure exerted by a 1-in. column of mercury at standard gravity and a temperature of 0°C: This is a unit recommended for meteorological use. 2) One 45° inch of mercury [in Hg (45°)] is defined as that pressure exerted by a 1-in. column of mercury at 45° latitude at sea level and a ...

The inch of mercury (inHg or "Hg) was a non-SI unit of pressure. It was used for measuring barometric pressure, (the thickness of air), in weather forecasts, and aviation (flying), but was replaced by the pascal.

2023年12月18日 · The two most common units in the United States to measure the pressure are "Inches of Mercury" and "Millibars". Inches of mercury refers to the height of a column of mercury measured in hundredths of inches.