Kilopascal (kPa)
The kilopascal, symbolized as kPa, equals 1,000 pascals and is commonly used for practical pressure measurements in engineering, meteorology, and everyday life. It offers a more manageable scale than the single pascal, suitable for expressing atmospheric, tire, and fluid pressures. Using kilopascals maintains SI system compatibility, ensuring straightforward conversion to other metric or imperial units. Its use enhances clarity and accuracy in scientific papers, industry practices, and technical documents worldwide.
Torr (mmHg)
The torr, symbolized as Torr, is a pressure unit equal to 1/760 of a standard atmosphere, approximately 133.322 pascals. Named for Evangelista Torricelli, inventor of the mercury barometer, the torr was historically central in vacuum measurement and laboratory work. This unit offers a practical scale for low pressures, particularly in physics and chemistry. While mostly replaced by SI units, such as the pascal, the torr remains essential in high-precision scientific instruments and measurements worldwide.