subtend
51Integrin — Integrins are cell surface receptors that interact with the extracellular matrix (ECM) and mediate various intracellular signals. They define cellular shape, mobility, and regulate the cell cycle. These integral membrane proteins are attached to… …
52Attention — is the cognitive process of paying attention to one aspect of the environment while ignoring others. Attention is one of the most intensely studied topics within psychology and cognitive neuroscience. In 1890, William James, in his textbook… …
53Eye — For other uses, see Eye (disambiguation), Ocular (disambiguation), Ocular, and Oculus. For taxon specific articles, see human eye, simple eye in invertebrates, mollusc eye, and arthropod eye. Eye …
54Depth perception — is the visual ability to perceive the world in three dimensions (3D) and the distance of an object. Depth sensation is the ability to move accurately, or to respond consistently, based on the distances of objects in an environment.[citation… …
55Möbius transformation — Not to be confused with Möbius transform or Möbius function. In geometry, a Möbius transformation of the plane is a rational function of the form of one complex variable z; here the coefficients a, b, c, d are complex numbers satisfying ad − …
56Golden angle — In geometry, the golden angle is the smaller of the two angles created by sectioning the circumference of a circle according to the golden section; that is, into two arcs such that the ratio of the length of the larger arc to the smaller is the… …
57Nebra sky disk — The Nebra Sky Disk. The Nebra Sky Disk is a bronze disk of around 30 cm diameter, with a blue green patina and inlaid with gold symbols. These are interpreted generally as a sun or full moon, a lunar crescent, and stars (including a cluster… …
58Magnification — For Magnification in the sense of exaggeration, see Exaggeration. For the 2001 album of progressive rock band Yes, see Magnification (album). The stamp appears larger with the use of a magnifying glass Magnification is the process of enlarging… …
59Bract — In botany, a bract is a modified or specialized leaf. Bracts are ordinarily associated with reproductive structures (subtending flowers, inflorescence axes, or cone scales). They are ordinarily reduced in size relative to foliage leaves, or of a… …
60Visual acuity — 20/15 and 20/15 vision redirect here. For other uses, see 2020 (disambiguation). Typical Snellen chart used for visual acuity testing. Visual acuity (VA) is acuteness or clearness of vision, which is dependent on the sharpness of the retinal… …
