"Supercilium" Natural Recordings by Native Speakers
The supercilium is the area above the eye on a human face, bounded by the eyebrows and involving the forehead. It is also known as the zone between the eyebrows and is generally regarded as the area from the hairline to the bottom of the eye sockets.
In a more detailed sense, the supercilium is divided into two parts:
The glabella, which is the smooth, flat area above the nose and below the eyebrows.
The frontal area, which is the surface of the upper part of the forehead.
The supercilium is of interest to anatomists, physiognomists, and others as it is involved in the expression and movement of the face, and as it appears in certain emotions such as looking down one's nose or looking up to heaven.
Supercoiled refers to a state of being twisted or coiled to an extreme degree, often in a spiral or helical shape. In chemistry and biology, supercoiling is a type of DNA structure where the double helix of DNA is twisted upon itself in a coil, beyond its natural level of coiling. This can occur due to the terminal bases of the DNA molecule being linked in an illegal fashion or due to being restrained in a confined space, or due to other specific situations such as fixation and gradual relaxation in a cell that cannot completely unwound.<br><br>In physics, supercoiling can also refer to the phenomenon whereby an elastic curve buckles or inverts, often occurring in long, thin structures like rods, DNA superhelices, or polymers.
A superconductor is a material that can conduct electricity with zero resistance, meaning that it can carry an electric current with perfect efficiency. <br><br>This occurs when the material is cooled to a very low temperature, close to absolute zero, and it loses all electrical resistance. In this state, the material can sustain a strong magnetic field and has other unique properties.<br><br>Some examples of superconductors include materials such as mercury, niobium, and cuprates, as well as some organic and ceramic materials. <br><br>Superconductors are used in various applications such as MRI machines, magnetic resonance imaging equipment, and levitation trains, among others, because of their ability to carry high currents with low energy loss.