Términos

Gas hidrocarburo incoloro, el más simple de los alquinos, también llamado etileno. El acetileno al inflamarse lo hace con mayor intensidad que otros gases y se usó en iluminación de escenarios antes que se utilizara la luz eléctrica. Arde de forma intensa con una llama altamente calórica y se usa de manera intensiva como combustible en soldaduras oxiacetilénica y blanda, y corte de metales.

Members of an order of solitary coelenterate polyps, named after the terrestrial anemone flower and resembling squat columns with a cluster of stinging tentatcles around the mouth, with which they trap small fishes and invertebrates and draw them into the large interior digestive cavity; they are brightly colored, especially in tropical waters, and reproduce sexually, by budding, or by fission.

Actinómetros de registro.

Cualquier instrumento usado para medir la intensidad de la energía radiante, especialmente del sol.

The branch of science which measures intensity of incident radiant energy by the speed of a photochemical reaction with the aid of an actinometer.

Class of vertebrate fish characterized by lepidotrichia or fin rays, meaning their fins are webs of skin supported by bony or horny spines in contrast to the fleshy lobed fins of some other fish. There is generally no fleshy base to their paired fins, no internal nares, their air sacs usually function as swim bladders, and their skeleton is usually well ossified. The class contains 46 orders representing over 30,000 species. The earliest known fossil dates to the Late Silurian, 420 million years ago. In some classifications, it is listed as a class instead of a subclass.

Término aplicado al trabajo de pintores expresionistas abstractos, como Jackson Pollock y Willem de Kooning. El estilo se caracteriza por el uso de pinceladas impulsivas y enérgicas que reflejan el estado psicológico del artista y un énfasis en la obra como escenario para ejecutar el acto de pintar.

Of people and corporate bodies, the state of being professionally active. A common example is in reference to dates associated with people or corporate bodies, where the specific dates, and sometimes loci, of birth and death are unknown; the term is commonly so-used in the discipline of art history for estimated life dates based on the oeuvre or other documentation of the artist. It may refer to the time of the artist's apprenticeship through old age, regardless of whether this was his or her most prolific period. For people other than artists and architects, prefer "flourished," which has the connotation of demarking that time when the person has achieved full development or success. However, usage overlaps.

Describes where an individual has carried out significant actions or primary locations of activity.

Designación amplia para áreas de desempeño, acciones físicas o mentales, eventos aislados o secuencias sistemáticas de acciones, métodos empleados en miras a un cierto fin, y procesos que ocurren en materiales u objetos. Las actividades pueden incluir de ramas del aprendizaje y los campos profesionales a eventos específicos de la vida, desde actividades ejecutadas mentalmente a procesos realizados con o en materiales u objetos, desde acciones físicas simples a juegos complejos.

Describes activities that occur in relation to a body of water.

Physical activities that are performed in the air.

The Physical and Mental Activities hierarchy contains terms for activities ranging from single actions to complex sets of physical and mental pursuits. Mental activities are those performed entirely or primarily with the brain (e.g., "meditation," "studying"). Physical activities are those performed with other parts of the body or the body as a whole (e.g., "ballooning," "dancing (activity)"). Relation to other hierarchies: Terms for processes performed physically on or with materials or objects (e.g., "carving") are in the Processes and Techniques hierarchy. Terms for organizational, administrative, or intellectual activities conducted to achieve specific purposes (e.g., "analysis") are in the Functions hierarchy. Terms denoting occasions (e.g., "coronations," "races") appear in the Events hierarchy.

Acts that engage with cognitive processes.