| The fingerhole on each pipe does not affect pitch, but when it is closed the airstream forces the respective reed to vibrate. |
| Orographic assent is where an airstream hits a mountain and rises because of the topography. |
| An active air filtration system provides a counterflow airstream that actually works to keep dust from entering the cooling system. |
| The Observatory said the hot weather was caused by a southwesterly airstream. |
| This so-called velaric airstream mechanism is always ingressive and can only be used for stops and affricates. |
| Only the Dyson, which relies on centrifugal force to spin the dust out of the airstream, maintains constant suction. |
