Bar Converter
Convert Bar to Exapascal and more • 57 conversions
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Unit Explanations
Barbar
Source UnitThe bar is a metric unit of pressure, not part of the International System of Units (SI), but is commonly used in industry and meteorology. It is defined as exactly 100,000 pascals, which is slightly less than the average atmospheric pressure on Earth at sea level. One bar is equivalent to 0.987 atmospheres, 14.5038 pounds per square inch (psi), or 750.06 millimeters of mercury (mmHg). Although not an SI unit, it is accepted for use with the SI and is widely used due to its convenient size for many applications.
Current Use
The bar is widely used in various fields including meteorology for atmospheric pressure, and in industries such as automotive and aviation for tire pressure and cabin pressure monitoring. It is especially favored in contexts where moderate pressures need to be measured with a single-digit number, avoiding the unwieldy values that would result from using pascals.
Fun Fact
The bar is almost exactly the atmospheric pressure on Earth at sea level.
ExapascalEPa
Target UnitThe exapascal (EPa) is a derived unit of pressure in the International System of Units (SI), representing one quintillion pascals (10^18 Pa). It is employed to express extremely high pressures, often found in theoretical physics and advanced engineering scenarios. The pascal itself is defined as one newton per square meter, making the exapascal a significant scale for measuring pressure in environments such as planetary atmospheres or during high-energy physics experiments.
Current Use
Currently, the exapascal is primarily used in scientific research and theoretical studies where exceptionally high pressures are encountered. This includes fields such as astrophysics, where pressures within stars or black holes exceed traditional measurements. Additionally, certain engineering applications, including materials testing under extreme conditions, may utilize the exapascal to describe stress on materials.
Fun Fact
The exapascal is not commonly used in everyday applications, making it a unit primarily of theoretical interest.
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= × 1.00000How to Convert
To convert to , multiply the value by 1.00000. This conversion factor represents the ratio between these two units.
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Bar
pressure • Non-SI
Definition
The bar is a metric unit of pressure, not part of the International System of Units (SI), but is commonly used in industry and meteorology. It is defined as exactly 100,000 pascals, which is slightly less than the average atmospheric pressure on Earth at sea level. One bar is equivalent to 0.987 atmospheres, 14.5038 pounds per square inch (psi), or 750.06 millimeters of mercury (mmHg). Although not an SI unit, it is accepted for use with the SI and is widely used due to its convenient size for many applications.
History & Origin
The bar as a unit of pressure was introduced in the early 20th century. It was created to provide a convenient metric unit for expressing pressures without having to resort to using large numbers, as can occur with the pascal. The bar was defined in 1909 by the International Union of Pure and Applied Chemistry (IUPAC) to be equivalent to 100,000 pascals, simplifying conversion with the SI system.
Etymology: The word 'bar' comes from the Greek word 'baros', meaning weight.
Current Use
The bar is widely used in various fields including meteorology for atmospheric pressure, and in industries such as automotive and aviation for tire pressure and cabin pressure monitoring. It is especially favored in contexts where moderate pressures need to be measured with a single-digit number, avoiding the unwieldy values that would result from using pascals.
💡 Fun Facts
- •The bar is almost exactly the atmospheric pressure on Earth at sea level.
- •The unit 'bar' is not an SI unit, but it's accepted for use with SI due to its practicality.
- •The word 'barometer', an instrument for measuring atmospheric pressure, shares its root with the unit 'bar'.
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Exapascal
pressure • Non-SI
Definition
The exapascal (EPa) is a derived unit of pressure in the International System of Units (SI), representing one quintillion pascals (10^18 Pa). It is employed to express extremely high pressures, often found in theoretical physics and advanced engineering scenarios. The pascal itself is defined as one newton per square meter, making the exapascal a significant scale for measuring pressure in environments such as planetary atmospheres or during high-energy physics experiments.
History & Origin
The exapascal was introduced as part of the SI units to facilitate the expression of extremely large pressure values. It emerged from the need to quantify pressures encountered in specialized fields like astrophysics and materials science. The pascal, the base unit of pressure, was named after Blaise Pascal, a French mathematician, physicist, and inventor, who made significant contributions to fluid mechanics and hydrostatics.
Etymology: The term 'exa' is derived from the Greek word 'hex' meaning six, and denotes the factor of 10^18 in the metric system.
Current Use
Currently, the exapascal is primarily used in scientific research and theoretical studies where exceptionally high pressures are encountered. This includes fields such as astrophysics, where pressures within stars or black holes exceed traditional measurements. Additionally, certain engineering applications, including materials testing under extreme conditions, may utilize the exapascal to describe stress on materials.
💡 Fun Facts
- •The exapascal is not commonly used in everyday applications, making it a unit primarily of theoretical interest.
- •An exapascal is equivalent to the pressure exerted by a mass of about 100 million tons on a surface area of one square meter.
- •The prefix 'exa' is rarely used in practical scenarios, highlighting the extreme conditions under which the exapascal is applicable.
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Frequently Asked Questions
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