The base of a tunnel on which the road or railway may be laid and used when construction is through unstable ground. It may be flat or form a continuous curve with the tunnel arch. invert (in'‑vert) The floor or bottom of the internal cross section of a closed conduit, such as an aqueduct, tunnel, or drain - The term originally referred to the inverted arch used to form the bottom of a masonry‑lined sewer or tunnel (Jackson, 1997) Wilson, W.E., Moore, J.E., (2003) Glossary of Hydrology, Berlin: Springer
The lowest point of the internal cross section of a channel or sewer Inverted Syphon A portion of pipe or conduit in which the sewage flows under pressure, due to the sewer dropping below the hydraulic gradient and then rising again
If you invert something, you change it to its opposite. They may be hoping to invert the presumption that a defendant is innocent until proved guilty. a telling illustration of inverted moral values. to put something in the opposite position to the one it was in before, especially by turning it upside down (=the bottom is on the top and the top is on the bottom) (invertere, from vertere )
To move the root note of a chord up or down an octave, resulting in a change in pitch
a method of the MeasurementModel is the opposite of predict() Consider the A Matrix formalism: D = AS Invert is the operation which, when applied to D, yields an estimate of S: (ATA)-1ATD = S