Pressure equalization
When pressure equalization is the process in which separate into two or more, filled with the same medium chambers of the same pressure is produced. The medium can either be a gas or a liquid . In most cases, the pressure equalization is accomplished by transporting medium between one or more of the named spaces and the environment, or by transporting it between the spaces. In the vast majority of cases, the medium is air .
When diving , use of lifts and flies ( climb / descent ) produced in the middle ear , a sub or overpressure compared to the environment (water, air or cabin pressure). The middle ear is connected to the pharynx by the so-called ear trumpet ( Eustachian tube ). This tube is normally closed; it opens when you swallow, so that pressure equalization can be brought about. Alternatively, when diving, the pressure in the throat area can be equalized with the increased pressure in the throat by exhaling into the closed nose. This form of pressure equalization is also called the Valsalva test .
See also
Web links
- Pressure Equalization Done Right - A Lesson For Scuba Divers - In-depth article covering various techniques