A doublejointed vane which measures vertical as well as horizontal wind direction. 
A doublejointed vane which measures vertical as well as horizontal wind direction. 
Related Terms 
DRIFTING SNOWSnow raised from the ground and carried by the wind to such a height that the horizontal visibility is considerably reduced but the vertical visibility is not materially diminished. The expression BLOWING SNOW is used when both the horizontal and vertical visibility are considerably reduced. 
WIND SHEARA change in wind direction or speed in a short distance, resulting in a shearing effect. It can act in a horizontal or vertical direction and, occasionally, in both. The degree of turbulence increases as the amount of wind shear increases. 
BLOWING SNOWSnow raised from the ground and carried by the wind to such a height that both vertical and horizontal visibility are considerably reduced. The expression DRIFTING SNOW is used when only the horizontal visibility is reduced. 
TIDAL WAVE

SPREADThe divergence of the air stream in a horizontal or vertical plane after it leaves the outlet. 
RECTANGULAR COORDINATESMagnitudes defining a point relative to two perpendicular lines, called AXES. The magnitudes indicate the perpendicular distance from each axis. The vertical distance is called the ordinate and the horizontal distance the abscissa. This is a form of CARTESIAN COORDINATES. 
ANGLE PRESSA hydraulic plastics molding press with both horizontal and vertical rams; used to produce complex moldings with deep undercuts. 
GARNET HINGEA hinge with a vertical bar and horizontal strap. 
DEADENDTOWERAntenna or transmission line tower designed to withstand unbalanced mechanical pull from all the conductors in one direction together with the wind strain and vertical loads. 
GEOMETRICAL DIPThe vertical angle between the horizontal and a straight line tangent to the surface of the earth. It is larger than DIP by the amount of terrestrial refraction. 
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