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Various window blind styles. A window blind is a type of window covering. [1] There are many different kinds of window blinds which use a variety of control systems. A typical window blind is made up of several long horizontal or vertical slats of various types of hard material, including wood, plastic or metal which are held together by cords that run through the blind slats.
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For 6/6 = 1.0 acuity, the size of a letter on the Snellen chart or Landolt C chart is a visual angle of 5 arc minutes (1 arc min = 1/60 of a degree), which is a 43 point font at 20 feet. [10] By the design of a typical optotype (like a Snellen E or a Landolt C), the critical gap that needs to be resolved is 1/5 this value, i.e., 1 arc min.
The largest letter on an eye chart often represents an acuity of 6/60 (20/200), the value that is considered "legally blind" in the US. Many individuals with high myopia cannot read the large E without glasses, but can read the 6/6 (20/20) line or 6/4.5 (20/15) line with glasses.
The number 720 stands for the 720 horizontal scan lines of image display resolution (also known as 720 pixels of vertical resolution). [1] The p stands for progressive scan , i.e. non-interlaced. When broadcast at 60 [ note 1 ] frames per second, 720p features the highest temporal resolution possible under the ATSC and DVB standards.
G ^ "Lowrider" did not enter the Hot R&B/Hip-Hop Songs chart, but peaked at number 8 on the Bubbling Under R&B/Hip-Hop Singles chart, which acts as a 25-song extension to the R&B/Hip-Hop Songs chart. H ^ ^ "Lowrider" and "Trouble" were released together as a double A-side single in several European territories.