negative pressure
der Unterdruck, die Unterdrücke
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negative pressure
Pressure that is lower than the surrounding or normal air pressure. Negative pressure can arise, for example, in a sealed container from which air has been extracted.
Durch den Unterdruck haftet der Saugnapf an der glatten Oberfläche.
The suction cup sticks to the smooth surface because of the negative pressure.
| gender | masculine der |
|---|---|
| plural | die Unterdrücke |
| genitive | des Unterdrucks |
| singular | plural | |
|---|---|---|
| nominative | der Unterdruck | die Unterdrücke |
| accusative | den Unterdruck | die Unterdrücke |
| dative | dem Unterdruck | den Unterdrücken |
| genitive | des Unterdrucks | der Unterdrücke |
The article changes with the case; it is shown in colour.
'Unterdruck' (negative pressure) is made up of 'unter' (under) and 'Druck' (pressure). The word therefore describes pressure that is below a particular reference value.
Im Rohr entsteht Unterdruck, sobald die Pumpe Luft absaugt.
Negative pressure develops in the pipe as soon as the pump extracts air.
Verbs such as 'erzeugen' (to generate), 'aufbauen' (to build up), 'entstehen' (to develop), and 'herrschen' (to prevail) are often used with 'Unterdruck' (negative pressure). The phrase 'unter Unterdruck stehen' (to be under negative pressure) is also common, especially in technical descriptions.
Die Pumpe erzeugt im Behälter einen starken Unterdruck.
The pump generates strong negative pressure in the container.
'Unterdruck' (negative pressure) is used especially in technical, physical, and medical contexts. In such texts, it is often specified exactly where the negative pressure develops or what causes it.
Das Gerät funktioniert nur, wenn im Schlauch ausreichend Unterdruck herrscht.
The device only works if sufficient negative pressure is present in the hose.
