Términos

Historically, foil that is used as a recording surface and wrapped around cylinders during the recording process. Phonograph foil was used prior to the invention of wax cylinders, where vibrations were cut directly into the wax.

Cone- or trumpet-shaped accessories attached to early gramophone players and phonographs, that collect and amplify the sound reproduced, or the sound that is to be recorded.

Spindles found on cylinder phonographs, around which cylindrical records (usually made of wax) are made to revolve.

Tools used to cut, shave, or sharpen needles that were used with early phonographs and gramophones.

Devices used to manually wind early phonographs.

Genus containing two plant species endemic to New Zealand and Norfolk Island.

Species of evergreen perennial plant native to New Zealand and Norfolk Island. The Maori grew many varieties for specific purposes: for clothing, fishing nets, bindings, baskets, mats, and medicine.

Phylum including several tube-dwelling, worm-like marine invertebrates characterized by a horseshoe-shaped lophophore, which is a characteristic feeding organ. Wormlike marine invertebrates of the phylum Phoronidea, having a true body cavity divided into compartments, a cluster of tentacles at the upper end, a circulatory system, circular and longitudinal muscles, and a nervous sytem beneath the epidermis; ranging up to 15 feet in length, each individual lives in a chitinous tube which it secretes, the lower end of which is buried in the mud or sand at the bottom of shallow seas while the tentacles extend out of the t to gather food.

Rare mineral that occurs as pale yellow crystals. Phosgenite is formed in the oxidation zone of lead ore deposits. Phosgenite has been identified as a constituent in ancient Egyptian cosmetic powders; it appears to have been synthetically produced using “wet” chemistry.

An ester or salt of phosphoric acid.

Facilities for producing fertilizer.

Colorless, noxious, highly flammable, poisonous gas, a combination of phosphorous and hydrogen. While it has been employed as a fast-acting, inexpensive fumigant which leaves no residue, health hazards associated with phosphine, as well as the compound's capacity to damage such materials as leather, feathers, and fur, have restricted its use.

Sulfides that occur when the sulfur atom reacts with organic phosphines.

Any salt or ester of a phosphonic acid. Phosphonates have been tested in recent years as potential crystallization inhibitors for sodium sulfate, a soluble salt that damages historic buildings and sculptures.

Formerly, the term referred to a non-crystalline or fibrous form of apatite. In current usage, it is a general term referring to any sedimentary rock containing a high proportion of calcium phosphate.

Movimiento entre los "American Pictorialist" estadounidenses, liderados por Alfred Stieglizt en Nueva York en 1902, con el objetivo de promover la fotografía como un medio artístico válido y refinado. El estilo buscaba elevar el estado de la impresión fotográfica fina mediante el uso de bicromato de goma o impresiones de platino para emular pintura, pastel u otros medios tradicionales, y con énfasis en el enfoque suave, la composición y la textura.

The process by which a material is damaged due to prolonged exposure to ultraviolet radiation.

Increased rate of chemical reaction caused by radiant energy in the form of light.

Describes a phenomenon of photosensitivity in which a material undergoes a change of color when illuminated with light of the appropriate wavelength; and reverts to its original state either in the dark or upon treatment with irradiation of a different wavelength.