Términos

Roca formada por pequeños granos redondos cementados entre sí y formados generalmente de carbonato de calcio, pero a veces de sílice u óxido de hierro.

Automata that operate by hidden clockwork and play out biblical or other inspirational scenes, often at given times of day; the art form flourished in medieval northern Europe.

Distinctive women's headgear unique to the Netherlands. The earliest forms comprised simple iron bands holding lace caps in place. Later versions were more decorative; by the 19th century they had become elaborate headdresses often made of gold and worn over an under cap. The style indicated the province of origin and social status of the wearer.

Movimiento artístico internacional que floreció en Europa y América a mediados de la década de 1960. Se caracteriza por la cuidadosa manipulación de formas y la utilización de colores audaces y contrastantes, para crear de esta manera movimiento, vibración o tensión cromática.

Personas que aplican líquido a negativos fotográficos para cubrir defectos, especialmente para hacer placas de impresión.

La cualidad o estado de una sustancia o cuerpo de ser impermeable a los rayos de luz.

To become opaque, darken and lose clarity, mist up. In conservation context, refers to opacification of stained glass and enamels.

Any materials added to increase optical density and make opaque. In ceramics, opacifiers are substances added to glaze or enamels for this purpose. They include tin oxide, titanium dioxide, and lead chromate.

Instrumentos fotoeléctricos usados para medir la cantidad de sedimentos en líquidos.

Cualidad o estado de exhibir una irisdicencia lechosa como la de un ópalo.

Mineral o gel mineral formado por esferas compactas de sílice. Se utiliza como gema. Se caracteriza por una mezcla brillante de colores cuando la luz toca su superficie.

Trade name of a type of thermosetting resin, manufactured by Monsanto.

Positivo fotográfico, generalmente una copia de gelatina o carbón, impresa o transferida a un vidrio blanco opaco.

Glass that is impenetrable by light, neither transparent nor translucent.

Style and culture of a North American Indian group native to the northern Mexican border state of Sonora.

The condition of providing access and being unblocked. Typically relating to an object or environment that has both an open and closed state, such as a book, box, vessel, garment, gate, window, room, or the like.

Online publishing model that allows users to access texts for free and to copy, distribute, and print without copyright restrictions.

Describes audio sound recording materials comprised of magnetic particles embedded in a binder layer on polyester, acetate, paper, or PVC bases, wound onto tape reels for storage and playback.

Storage media intended for video recordings that are wound and played back from open reels or spools.