Glossary
Degree of vacuum
A pressure lower than atmospheric pressure is called a vacuum, and the absolute pressure measured with respect to the absolute pressure of zero.
A practical unit of vacuum is kPa{㎜Hg} (column of mercury).
A pressure lower than atmospheric pressure is called a vacuum, and the absolute pressure measured with respect to the absolute pressure of zero.
A practical unit of vacuum is kPa{㎜Hg} (column of mercury).