Attopascal Converter
Convert Attopascal to Pascal and more • 57 conversions
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Unit Explanations
AttopascalaPa
Source UnitThe attopascal (aPa) is a subunit of pressure that is defined as one quintillionth of a pascal (Pa), which is the SI unit of pressure. Specifically, 1 attopascal equals 10^-18 pascals. The pascal itself is defined as one newton per square meter. This extremely small unit of pressure is utilized in high-precision scientific measurements, particularly in fields such as quantum physics and astrophysics, where minute variations in pressure can have significant implications.
Current Use
The attopascal is predominantly used in specialized scientific research and high-precision instruments. In fields such as quantum mechanics, it is essential for measuring the pressures achieved in ultrahigh vacuum environments, where the pressures can be exceptionally low. The attopascal is also relevant in astrophysics for studying the atmospheres of distant planets or the pressure conditions within stellar environments.
Fun Fact
The attopascal is so small that it is often used in theoretical physics rather than practical applications.
PascalPa
Target UnitThe pascal (Pa) is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus, and ultimate tensile strength. It is defined as one newton per square meter. In other words, it is the pressure exerted by a force of one newton acting uniformly over an area of one square meter. The pascal is a crucial unit in engineering, physics, and meteorology, providing a standard measure for atmospheric pressure, material strength, and force distribution. It allows for consistent and comparable measurements across various scientific and industrial fields.
Current Use
The pascal is widely used in various fields to measure pressure and stress. In meteorology, it is used to express atmospheric pressure, often in the form of hectopascals (hPa). In engineering, it helps evaluate the strength of materials and structures. The unit is also crucial in fluid mechanics, where it is used to determine fluid pressure in pipes and vessels. The pascal's versatility makes it a fundamental unit in both scientific research and practical applications, especially where precise pressure measurements are critical.
Fun Fact
The pascal is named after Blaise Pascal, who made significant contributions to the understanding of fluid pressure.
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Attopascal
pressure • Non-SI
Definition
The attopascal (aPa) is a subunit of pressure that is defined as one quintillionth of a pascal (Pa), which is the SI unit of pressure. Specifically, 1 attopascal equals 10^-18 pascals. The pascal itself is defined as one newton per square meter. This extremely small unit of pressure is utilized in high-precision scientific measurements, particularly in fields such as quantum physics and astrophysics, where minute variations in pressure can have significant implications.
History & Origin
The attopascal was introduced to provide a more convenient way to express extremely low pressures that are relevant in certain scientific fields. The pascal, named after the French mathematician and physicist Blaise Pascal, was adopted as the SI unit for pressure in 1971. The prefix 'atto-' is derived from the Greek word 'atto', meaning 'eighteen', and was officially added to the International System of Units in 1960. This prefix allows scientists to express measurements of pressure that are otherwise cumbersome at such low values.
Etymology: The term 'attopascal' combines the prefix 'atto-', representing 10^-18, with 'pascal', the unit of pressure.
Current Use
The attopascal is predominantly used in specialized scientific research and high-precision instruments. In fields such as quantum mechanics, it is essential for measuring the pressures achieved in ultrahigh vacuum environments, where the pressures can be exceptionally low. The attopascal is also relevant in astrophysics for studying the atmospheres of distant planets or the pressure conditions within stellar environments.
💡 Fun Facts
- •The attopascal is so small that it is often used in theoretical physics rather than practical applications.
- •One attopascal is equivalent to less than one billionth of a standard atmospheric pressure.
- •The prefix 'atto-' was derived from the Danish word 'at', meaning 'eighteen', reflecting its power of ten.
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Pascal
pressure • SI Unit
Definition
The pascal (Pa) is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus, and ultimate tensile strength. It is defined as one newton per square meter. In other words, it is the pressure exerted by a force of one newton acting uniformly over an area of one square meter. The pascal is a crucial unit in engineering, physics, and meteorology, providing a standard measure for atmospheric pressure, material strength, and force distribution. It allows for consistent and comparable measurements across various scientific and industrial fields.
History & Origin
The pascal was named in honor of Blaise Pascal, a French mathematician, physicist, and inventor known for his contributions to fluid mechanics and the study of pressure. The unit was officially adopted as the SI unit for pressure in 1971, although the concept of pressure itself dates back to early scientific studies of fluids and gases. The pascal provided a standardized way to measure pressure, replacing a variety of non-standard units previously in use across different regions and industries.
Etymology: The term 'pascal' is derived from the name of Blaise Pascal.
Current Use
The pascal is widely used in various fields to measure pressure and stress. In meteorology, it is used to express atmospheric pressure, often in the form of hectopascals (hPa). In engineering, it helps evaluate the strength of materials and structures. The unit is also crucial in fluid mechanics, where it is used to determine fluid pressure in pipes and vessels. The pascal's versatility makes it a fundamental unit in both scientific research and practical applications, especially where precise pressure measurements are critical.
💡 Fun Facts
- •The pascal is named after Blaise Pascal, who made significant contributions to the understanding of fluid pressure.
- •One pascal is a very small pressure; it is equivalent to the pressure of a dollar bill lying flat on a table.
- •The human eardrum can detect pressure changes as small as 20 micropascals.
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