23 relations: Adaptation (eye), Amacrine cell, Ancient Greek, Averted vision, Candela, Cone cell, Deilephila elpenor, Ganglion cell, Human eye, Light, Luminance, Mesopic vision, Night vision, Photopic vision, Photopigment, Purkinje effect, Rhodopsin, Rod cell, Spatial frequency, Tapetum lucidum, Visible spectrum, Visual acuity, Visual perception.
In ocular physiology, adaptation is the ability of the eye to adjust to various levels of light.
Amacrine cells are interneurons in the retina.
The Ancient Greek language includes the forms of Greek used in ancient Greece and the ancient world from around the 9th century BC to the 6th century AD.
Averted vision is a technique for viewing faint objects which uses peripheral vision.
The candela (or; symbol: cd) is the base unit of luminous intensity in the International System of Units (SI); that is, luminous power per unit solid angle emitted by a point light source in a particular direction.
Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.
The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.
Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.
Christmas traditions vary from country to country.
Cone cells, or cones, are one of three types of photoreceptor cells in the retina of mammalian eyes (e.g. the human eye).
Deilephila elpenor, also known as the elephant hawk moth, is a moth in the ''Sphingdae'' family.
A ganglion cell is a cell found in a ganglion.
The human eye is an organ which reacts to light and pressure.
Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.
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.
New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.
New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.
In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.
Night vision is the ability to see in low-light conditions.
Photopic vision is the vision of the eye under well-lit conditions (luminance level 10 to 108 cd/m2).
Photopigments are unstable pigments that undergo a chemical change when they absorb light.
The Purkinje effect (sometimes called the Purkinje shift) is the tendency for the peak luminance sensitivity of the human eye to shift toward the blue end of the color spectrum at low illumination levels as part of dark adaptation.
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.
In mathematics, physics, and engineering, spatial frequency is a characteristic of any structure that is periodic across position in space.
The tapetum lucidum (Latin: "bright tapestry; coverlet", plural tapeta lucida) is a layer of tissue in the eye of many vertebrates.
The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye.
Visual acuity (VA) commonly refers to the clarity of vision.
Visual perception is the ability to interpret the surrounding environment using light in the visible spectrum reflected by the objects in the environment.
2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.
2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.