Related Words

Directional Shear: The shear created by a rapid change in wind direction with height.

Shear: It is the rate of change over a short duration. In wind shear, it can refer to the frequent change in wind speed within a short distance. It can occur vertically or horizontally. Directional . . . View Full Definition

Shear Block: Plywood that is face nailed to short (2 X 4's or 2 X 6's) wall studs (above a door or window, for example). This is done to prevent the wall from sliding and collapsing.

Shear Line: A line of maximum horizontal wind shear. A narrow zone across which there is an abrupt change in the horizontal wind component parallel to it.

Shear Strength: The characteristic of a material to resist shear forces.

Wind Shear: The rate of wind speed or direction change with distance. Vertical wind shear is the rate of change of the wind with respect to altitude. Horizontal wind shear is the rate of change on a hor . . . View Full Definition

Unidirectional Microphone: A microphone that picks up sound from a specific direction.

Omnidirectional: Literally, from all directions. In audio, microphones are said to be omnidirectional if they can detect sound with equal sensitivity from all directions. Speakers are omnidirectional if they . . . View Full Definition

Directional Gyro: A panel instrument providing a gyroscopic reading of an aircraft's compass heading.

Directional Drilling: Drilling wells that are deliberately deviated from the vertical to hit a target that is not directly beneath the well site or to penetrate a greater thickness of rock within a productive zone.