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A: The bottom of a concave meniscus. B: The top of a convex meniscus. In physics (particularly fluid statics), the meniscus (pl.: menisci, from Greek ' crescent ') is the curve in the upper surface of a liquid close to the surface of the container or another object, produced by surface tension.
A convex curve (black) forms a connected subset of the boundary of a convex set (blue), and has a supporting line (red) through each of its points. A parabola, a convex curve that is the graph of the convex function () = In geometry, a convex curve is a plane curve that has a supporting line through each of its points.
A strictly convex function is a function that the straight line between any pair of points on the curve is above the curve except for the intersection points between the straight line and the curve. An example of a function which is convex but not strictly convex is f ( x , y ) = x 2 + y {\displaystyle f(x,y)=x^{2}+y} .
Pear shaped, in reference to the shape of a pear, i.e., a generally rounded shape, tapered towards the top and more spherical/circular at the bottom; Rod, a 3-dimensional, solid (filled) cylinder. Rod shaped bacteria; Scarabaeus curve [10] resembling a scarab; Serpentine, shaped like a snake; Stadium, two half-circles joined by straight sides [11]
Mugs usually have handles and hold a larger amount of fluid than other types of cups such as teacups or coffee cups. Typically, a mug holds approximately 250–350 ml (8–12 US fl oz) of liquid. [2] A mug-shaped vessel much larger than this tends to be called a tankard. Mugs typically have a straight-line profile, either perpendicular or flaring.
Jug glasses, or "dimple mugs", are shaped more like a large mug with a handle. They are moulded with a grid pattern of thickened glass on the outside, somewhat resembling the segmentation of a WWII-era hand grenade. The dimples prevent the glass slipping out of the fingers in a washing-up bowl, and the design of the glass emphasises strength ...
Convex function - a function in which the line segment between any two points on the graph of the function lies above the graph. Closed convex function - a convex function all of whose sublevel sets are closed sets. Proper convex function - a convex function whose effective domain is nonempty and it never attains minus infinity.
This illustrates that a coffee mug and a donut are homeomorphic. In mathematics and more specifically in topology , a homeomorphism ( from Greek roots meaning "similar shape", named by Henri Poincaré ), [ 2 ] [ 3 ] also called topological isomorphism , or bicontinuous function , is a bijective and continuous function between topological spaces ...