Green Light

Green Light, green light green-light, or greenlight may refer to:

Computing and software

Arts and entertainment

Film and television

Literature

Music

Albums

Songs

Light

Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum. The word usually refers to visible light, which is visible to the human eye and is responsible for the sense of sight. Visible light is usually defined as having wavelengths in the range of 400–700 nanometres (nm), or 4.00 × 10⁻⁷ to 7.00 × 10⁻⁷ m, between the infrared (with longer wavelengths) and the ultraviolet (with shorter wavelengths). This wavelength means a frequency range of roughly 430–750 terahertz (THz).

The main source of light on Earth is the Sun. Sunlight provides the energy that green plants use to create sugars mostly in the form of starches, which release energy into the living things that digest them. This process of photosynthesis provides virtually all the energy used by living things. Historically, another important source of light for humans has been fire, from ancient campfires to modern kerosene lamps. With the development of electric lights and power systems, electric lighting has effectively replaced firelight. Some species of animals generate their own light, a process called bioluminescence. For example, fireflies use light to locate mates, and vampire squids use it to hide themselves from prey.

Green

Green is the color between blue and yellow on the spectrum of visible light. It is evoked by light with a predominant wavelength of roughly 495–570 nm. In the subtractive color system, used in painting and color printing, it is created by a combination of yellow and blue, or yellow and cyan; in the RGB color model, used on television and computer screens, it is one of the additive primary colors, along with red and blue, which are mixed in different combinations to create all other colors.

The modern English word green comes from the Middle English and Anglo-Saxon word grene, from the same Germanic root as the words "grass" and "grow". It is the color of living grass and leaves and as a result is the color most associated with springtime, growth and nature. By far the largest contributor to green in nature is chlorophyll, the chemical by which plants photosynthesize and convert sunlight into chemical energy. Many creatures have adapted to their green environments by taking on a green hue themselves as camouflage. Several minerals have a green color, including the emerald, which is colored green by its chromium content.

Troy

Troy (Ancient Greek: Τροία, Troia and Ἴλιον, Ilion, or Ἴλιος, Ilios; Latin: Trōia and Īlium;Hittite: Wilusa or Truwisa;Turkish: Truva) was a city situated in what is known from Classical sources as Asia Minor, now northwest Anatolia in modern Turkey, located south of the southwest end of the Dardanelles/Hellespont and northwest of Mount Ida at Hisarlık. It is the setting of the Trojan War described in the Greek Epic Cycle and especially in the Iliad, one of the two epic poems attributed to Homer. Metrical evidence from the Iliad and the Odyssey seems to show that the name Ἴλιον (Ilion) formerly began with a digamma: Ϝίλιον (Wilion). This was later supported by the Hittite form Wilusa.

A new capital called Ilium was founded on the site in the reign of the Roman Emperor Augustus. It flourished until the establishment of Constantinople and declined gradually during the Byzantine era.

In 1865, English archaeologist Frank Calvert excavated trial trenches in a field he had bought from a local farmer at Hisarlık, and in 1868, Heinrich Schliemann, a wealthy German businessman and archaeologist, also began excavating in the area after a chance meeting with Calvert in Çanakkale. These excavations revealed several cities built in succession. Schliemann was at first skeptical about the identification of Hisarlik with Troy, but was persuaded by Calvert and took over Calvert's excavations on the eastern half of the Hisarlik site, which was on Calvert's property. Troy VII has been identified with the Hittite city Wilusa, the probable origin of the Greek Ἴλιον, and is generally (but not conclusively) identified with Homeric Troy.

LIGHT (protein)

LIGHT, also known as tumor necrosis factor superfamily member 14 (TNFSF14), is a secreted protein of the TNF superfamily. It is recognized by herpesvirus entry mediator (HVEM), as well as decoy receptor 3.

Nomenclature

LIGHT stands for "homologous to lymphotoxin, exhibits inducible expression and competes with HSV glycoprotein D for binding to herpesvirus entry mediator, a receptor expressed on T lymphocytes". In the cluster of differentiation terminology it is classified as CD258.

Function

The protein encoded by this gene is a member of the tumor necrosis factor (TNF) ligand family. This protein is a ligand for TNFRSF14, which is a member of the tumor necrosis factor receptor superfamily, and which is also known as a herpesvirus entry mediator ligand (HVEML). This protein may function as a costimulatory factor for the activation of lymphoid cells and as a deterrent to infection by herpesvirus. This protein has been shown to stimulate the proliferation of T cells, and trigger apoptosis of various tumor cells. This protein is also reported to prevent tumor necrosis factor alpha mediated apoptosis in primary hepatocyte. Two alternatively spliced transcript variant encoding distinct isoforms have been reported.