Search results
Results from the WOW.Com Content Network
Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]
Esophoria is an eye condition involving inward deviation of the eye, usually due to extra-ocular muscle imbalance. It is a type of heterophoria. Cause. Causes include: Refractive errors; Divergence insufficiency; Convergence excess; this can be due to nerve, muscle, congenital or mechanical anomalies.
Lysenko speaking at the Kremlin in 1935. Behind him are (left to right) Stanislav Kosior, Anastas Mikoyan, Andrei Andreev and Joseph Stalin. Lysenkoism (Russian: Лысенковщина, romanized: Lysenkovshchina, IPA: [lɨˈsɛnkəfɕːʲɪnə]; Ukrainian: лисенківщина, romanized: lysenkivščyna, IPA: [lɪˈsɛnkiu̯ʃtʃɪnɐ]) was a political campaign led by Soviet biologist ...
Binocular vision. Principle of binocular vision with horopter shown. In biology, binocular vision is a type of vision in which an animal has two eyes capable of facing the same direction to perceive a single three-dimensional image of its surroundings. Binocular vision does not typically refer to vision where an animal has eyes on opposite ...
Convergence insufficiency. Convergence Insufficiency. Other names. Convergence disorder. Specialty. Ophthalmology, optometry. Convergence insufficiency is a sensory and neuromuscular anomaly of the binocular vision system, characterized by a reduced ability of the eyes to turn towards each other, or sustain convergence .
Canopy cover surrounding Madison, Wisconsin. Landscape ecology is the science of studying and improving relationships between ecological processes in the environment and particular ecosystems. This is done within a variety of landscape scales, development spatial patterns, and organizational levels of research and policy. [1] [2] [3] Concisely ...
Philosophy of geography. Philosophy of geography is the subfield of philosophy which deals with epistemological, metaphysical, and axiological issues in geography, with geographic methodology in general, and with more broadly related issues such as the perception and representation of space and place.
Definition of an evolutionary grade. An evolutionary grade is a group of species united by morphological or physiological traits, that has given rise to another group that has major differences from the ancestral group's condition, and is thus not considered part of the ancestral group, while still having enough similarities that we can group ...