|
Blue Amberol Records
Blue Amberol Records was the trademark name for phonograph cylinder, cylinder records manufactured by Thomas A. Edison, Inc. in the United States, US from 1912 to 1929. They replaced the 4-minute black wax Amberol cylinders introduced in 1908, which had replaced the 2-minute wax cylinders that had been the standard format since the late 1880s. Blue Amberols can play for as long as 4 minutes and 45 seconds and have a surface layer of the "indestructible" plastic celluloid, which Edison tinted a trademark blue color. Edison brand phonographs designed to play Amberol cylinders were named Amberolas. History Edison wax Amberols The four-minute Amberol cylinder made its debut in 1908. Amberols were made of a fragile, black, wax-like compound which was harder than the original 1902 black wax. This Amberol wax was also used for 2-minute standard records from 1908 until the Blue Amberol appeared in 1912. The introduction of the Amberol started a resurgence of interest in cylinder record ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blue Amberol 4
Blue is one of the three primary colours in the RYB colour model (traditional colour theory), as well as in the RGB (additive) colour model. It lies between violet and cyan on the spectrum of visible light. The eye perceives blue when observing light with a dominant wavelength between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colours; azure contains some green, while ultramarine contains some violet. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called Tyndall effect explains blue eyes. Distant objects appear more blue because of another optical effect called aerial perspective. Blue has been an important colour in art and decoration since ancient times. The semi-precious stone lapis lazuli was used in ancient Egypt for jewellery and ornament and later, in the Renaissance, to make the pigment ultramarine, the most expensive of all pigments. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
