36 relations: Adaptation (eye), Anatomy, Astronomy, Black and white, Blue, Bohemia, Cone cell, Contrast (vision), Czechs, Dark adaptor goggles, Dusk, Encyclopædia Britannica, Flower, Green, Human eye, Jan Evangelista Purkyně, Kruithof curve, Leaf, Lighting, Luminance, Mesopic vision, Moonlight, Nocturnality, Opsin, Pelargonium, Petal, Photopic vision, Polymath, Retina, Rhodopsin, Rod cell, Scotopic vision, Star, Sunlight, Variable star, Visible spectrum.
In ocular physiology, adaptation is the ability of the eye to adjust to various levels of light.
Anatomy (Greek anatomē, “dissection”) is the branch of biology concerned with the study of the structure of organisms and their parts.
Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.
Black and white, often abbreviated B/W or B&W, and hyphenated black-and-white when used as an adjective, is any of several monochrome forms in visual arts.
Blue is one of the three primary colours of pigments in painting and traditional colour theory, as well as in the RGB colour model.
Bohemia (Čechy;; Czechy; Bohême; Bohemia; Boemia) is the westernmost and largest historical region of the Czech lands in the present-day Czech Republic.
Cone cells, or cones, are one of three types of photoreceptor cells in the retina of mammalian eyes (e.g. the human eye).
Contrast is the difference in luminance or colour that makes an object (or its representation in an image or display) distinguishable.
The Czechs (Češi,; singular masculine: Čech, singular feminine: Češka) or the Czech people (Český národ), are a West Slavic ethnic group and a nation native to the Czech Republic in Central Europe, who share a common ancestry, culture, history and Czech language.
Dark adaptor goggles, also called red adaptation goggles, are used in the field of meteorology and astronomy for adapting the eyes to the dark prior to an observation at night.
Dusk occurs at the darkest stage of twilight, or at the very end of astronomical twilight after sunset and just before night.
The Encyclopædia Britannica (Latin for "British Encyclopaedia"), published by Encyclopædia Britannica, Inc., is a general knowledge English-language encyclopaedia.
A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Magnoliophyta, also called angiosperms).
Green is the color between blue and yellow on the visible spectrum.
The human eye is an organ which reacts to light and pressure.
Jan Evangelista Purkyně (also written Johann Evangelist Purkinje) (17 or 18 December 1787 – 28 July 1869) was a Czech anatomist and physiologist.
The Kruithof curve describes a region of illuminance levels and color temperatures that are often viewed as comfortable or pleasing to an observer.
A leaf is an organ of a vascular plant and is the principal lateral appendage of the stem.
Lighting or illumination is the deliberate use of light to achieve a practical or aesthetic effect.
Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction.
Mesopic vision is a combination of photopic vision and scotopic vision in low but not quite dark lighting situations.
Moonlight consists of mostly sunlight (with little earthlight) reflected from the parts of the Moon's surface where the Sun's light strikes.
Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day.
Opsins are a group of proteins, made light-sensitive, via the chromophore retinal found in photoreceptor cells of the retina.
Pelargonium is a genus of flowering plants which includes about 200 species of perennials, succulents, and shrubs, commonly known as geraniums (in the United States also storksbills).
Petals are modified leaves that surround the reproductive parts of flowers.
Photopic vision is the vision of the eye under well-lit conditions (luminance level 10 to 108 cd/m2).
A polymath (πολυμαθής,, "having learned much,"The term was first recorded in written English in the early seventeenth century Latin: uomo universalis, "universal man") is a person whose expertise spans a significant number of different subject areas—such a person is known to draw on complex bodies of knowledge to solve specific problems.
The retina is the innermost, light-sensitive "coat", or layer, of shell tissue of the eye of most vertebrates and some molluscs.
Rhodopsin (also known as visual purple) is a light-sensitive receptor protein involved in visual phototransduction.
Rod cells are photoreceptor cells in the retina of the eye that can function in less intense light than the other type of visual photoreceptor, cone cells.
Scotopic vision is the vision of the eye under low-light levels.
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light.
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.
The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye.