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A software rendering of a spinning barber pole Barber pole, c. 1938, North Carolina Museum of History Barber shop in Torquay, Devon, England, with red and white pole. A barber's pole is a type of sign used by barbers to signify the place or shop where they perform their craft.
During the treatment, barber-surgeons would give patients poles to hold. Grasping the staff made their veins pop out a bit, making them easier to find while the barbers went all Sweeney Todd.
The barber's pole is commonly found outside barber shops. In 1929, psychologist J.P. Guilford informally noted a paradox in the perceived motion of stripes on a rotating barber pole. The barber pole turns in place on its vertical axis, but the stripes appear to move upwards rather than turning with the pole. [3]
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PNG is a raster graphics format. PNG has advantages over SVG including smaller filesize (due to less-than-optimal server-side SVG-to-raster conversion), more widely supported and often easier and faster to make simple changes to things such as borders.
It was marked by granite border stones (Grenzsteine), 20 centimetres (7.9 in) square with a + carved on the top and the letters "DDR" on the east-facing edge. In August 1967, East Germany erected 2,622 distinctive border markers or "barber's poles" (Grenzsäule or Grenzpfähle), each located about 500 feet (150 m) apart. They were made of ...
PNG was developed as an improved, non-patented replacement for Graphics Interchange Format (GIF)—unofficially, the initials PNG stood for the recursive acronym "PNG's not GIF". [ 6 ] PNG supports palette-based images (with palettes of 24-bit RGB or 32-bit RGBA colors), grayscale images (with or without an alpha channel for transparency), and ...
[21] [22] A spinning barber pole creates a visual illusion, in which the stripes appear to be traveling up or down the length of the pole, [23] rather than around it. [24] [25] In the United States, the blue stripe is also sometimes used to match the flag. [10] [26] [27] In South Korea, barber's poles are used both for actual barbershops and ...