The type of the self-complementary antenna is not limited only to the case of a planar antenna with two terminals, but there are more general types of structures with various grades of complexity and infinite freedom in their structures, such as, the number of terminals, the number of reference planes, and others.
32.
The "'momentum thickness "', "'? "'or "'? 2 "', is the distance by which a surface would have to be moved parallel to itself towards the reference plane in an inviscid fluid stream of velocity u _ 0 to give the same total momentum as exists between the surface and the reference plane in a real fluid.
33.
The "'momentum thickness "', "'? "'or "'? 2 "', is the distance by which a surface would have to be moved parallel to itself towards the reference plane in an inviscid fluid stream of velocity u _ 0 to give the same total momentum as exists between the surface and the reference plane in a real fluid.
34.
Now observe that almost all lines go through any given reference plane-such as the ( " X, Y ", 1 )-plane, whilst the lines precisely parallel to this plane, having coordinates ( " X, Y ", 0 ), specify directions uniquely, as'points at infinity'that are used in the affine ( " X, Y " )-plane it lies above.
35.
A " true bearing " is measured in relation to the fixed horizontal reference plane of true north, that is, using the direction toward the geographic north pole as a reference point, while a " magnetic bearing " is measured in relation to magnetic north, that is, using the direction toward the magnetic north pole as a reference.
36.
Further, from 1995, designs were required to be drawn from a reference plane ( template ), and strict limitations were enforced as to the minimum and maximum tolerances for aspects of the vehicle such as the size of the cockpit opening ( an idea well known in Champ Car for a decade ) and of aerodynamic devices, commonly called wings.
37.
By definition, there is no sliding when the instantaneous velocity of the rolling object in all the points in which it contacts the surface is the same as that of the surface; in particular, for a reference plane in which the rolling surface is at rest, the instantaneous velocity of the point of contact of the rolling object is zero.
38.
The "'displacement thickness "', "'? * "'or "'? 1 "'is the distance by which a surface would have to be moved in the direction perpendicular to its normal vector away from the reference plane in an inviscid fluid stream of velocity u _ 0 to give the same flow rate as occurs between the surface and the reference plane in a real fluid.
39.
The "'displacement thickness "', "'? * "'or "'? 1 "'is the distance by which a surface would have to be moved in the direction perpendicular to its normal vector away from the reference plane in an inviscid fluid stream of velocity u _ 0 to give the same flow rate as occurs between the surface and the reference plane in a real fluid.
