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45 rpm record: Analog often around 4 minutes (EP: 7 minutes) per side, up to 6 per side, in some cases even a few minutes longer. LP record: Analog typically 15–25 minutes per side (30 minutes per side for classical & spoken word), although 45 minutes is possible with tight groove spacing and no spacing between tracks. Audio cassette: Analog
The most common rotational speeds for gramophone records are 33 + 1 ⁄ 3 revolutions per minute (rpm), 45 rpm, and 78 rpm. Established as the only common rotational speed prior to the 1940s, the 78 became increasingly less common throughout the 1950s and into more modern decades as the 33 and the 45 became established as the new standards for ...
Sizes of records in the United States and the UK are generally measured in inches, e.g. 7-inch records, which are generally 45 rpm records. LPs were 10-inch records at first, but soon the 12-inch size became by far the most common. Generally, 78s were 10-inch, but 12-inch and 7-inch and even smaller were made—the so-called "little wonders". [82]
By projecting all three images onto a screen simultaneously, he was able to recreate the original image of the ribbon. #4 London, Kodachrome. Image credits: Chalmers Butterfield
The 45 rpm speed was chosen to allow a 5 + 1 ⁄ 2 minute playing time from the 7-inch disc. [11] The 7-inch 45 rpm record was released March 31, 1949, by RCA Victor as a smaller, more durable and higher-fidelity replacement for the 78 rpm shellac discs. [12] The first 45 rpm records were monaural, with recordings on both sides of the disc. As ...
The LP (from long playing [2] or long play) is an analog sound storage medium, specifically a phonograph record format characterized by: a speed of 33 + 1 ⁄ 3 rpm; a 12- or 10-inch (30- or 25-cm) diameter; use of the "microgroove" groove specification; and a vinyl (a copolymer of vinyl chloride acetate) composition disk.
Depositphotos is a company operating a royalty-free content website with headquarters in New York, USA.It was founded by Dmitry Sergeev in November 2009 in Kyiv, Ukraine. [1] [2] The Depositphotos library has over 200 million files, [3] including royalty-free stock photos, vector images, video clips, [4] and editorial files. [5]