DVD CDs (0.74 µm for DVD versus 1.6 µm for CD), accounting in part for DVD's increased storage capacity. In comparison, Blu-ray Disc, the successor to the DVD format, uses a wavelength of 405 nm (violet), and one dual-layer disc has a 50 GB storage capacity. Read and write speeds for the first DVD drives and players were 1,385 kB/s (1,353 KiB/s); this speed is usually called "1×". More recent models, at 18× or 20×, have 18 or 20 times that speed. Note that for CD drives, 1× means 153.6 kB/s (150 KiB/s), about one-ninth as swift. DVD-Video is a standard
Names given to the Spanish language used was called "castellano". Thus, some Latin American countries formerly under Spanish rule have retained the custom of calling it "castellano", while others eventually switched to calling it "español", with many different factors influencing the final choice. In English, the term "Spanish" relates both to the language and to the nation. The noun used for a person from Spain is "Spaniard", with the collective noun "the Spanish". The term "Castilian" is much less widespread amongst English speakers than the term "Spanish". Two main hypotheses have been proposed for the origin of the word "español": one based on dissimilation in Old