a smooth surface
71skin friction/surface friction drag — Drag caused by the unevenness in the skin of a body. The layers of air near the surface are retarded, and the speed of the airflow increases as the distance from the skin increases. To reduce the skin friction, the surface should be smoothened to …
72Saddle surface — A saddle surface is a smooth surface containing one or more saddle points. The term derives of the peculiar shape of historical horse saddles, which curve both up and down.Classical examples of two dimensional saddle surfaces in the Euclidean… …
73machined surface — A smooth surface of metal such as the top of a cylinder block …
74Road surface — A road in the process of being resurfaced Road surface (British English) or pavement (American English) is the durable surface material laid down on an area intended to sustain vehicular or foot traffic, such as a road or walkway. In the past… …
75Cubic surface — A cubic surface is a projective variety studied in algebraic geometry. It is an algebraic surface in three dimensional projective space defined by a single polynomial which is homogeneous of degree 3 (hence, cubic). Cubic surfaces are del Pezzo… …
76Zariski surface — In algebraic geometry, a branch of mathematics, a Zariski surface is a surface over a field of characteristic p gt; 0 such that there is a dominant inseparable map of degree p from the projective plane to the surface. In particular, all Zariski… …
77Supersingular K3 surface — In algebraic geometry, a supersingular K3 surface is a particular type of K3 surface. Such an algebraic surface has its cohomology generated by algebraic cycles; in other words, since the second Betti number [In the case of a base field other… …
78Bézier surface — Bézier surfaces are a species of mathematical spline used in computer graphics, computer aided design, and finite element modelling. As with the Bézier curve, a Bézier surface is defined by a set of control points. Similar to interpolation in… …
79Starry smooth-hound — Conservation status Least Concern ( …
80Grey smooth-hound — Scientific classification Kingdom: Animalia Phylum: Chordata Class: Chondrichthyes …
