The Silky Epeira also has all the elbow-room she needs; and her paraboloid is not without elegance.
In this case, therefore, we shall obtain three paraboloid boundary curves, as shown in Fig. 93.
If it lies at the infinity, the plane at infinity is a tangent plane, and the surface is called a paraboloid.
Behind this was a curious, paraboloid projector made up of hundreds of tiny, carefully orientated coils.
Also, the form of cambered surface should be a paraboloid—not arc or arc of circles.