Skew

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Mathematics

• In geometry, straight lines in a space referred to as skew lines
  Skew lines
  
  In solid geometry, skew lines are two lines that do not intersect but are not parallel. Equivalently, they are lines that are not both in the same plane ....
   if they are neither parallel nor intersecting.
• In statistics, skew is sometimes used as an alternative term to skewness
  Skewness
  
  In probability theory and statistics, skewness is a measure of the asymmetry of the probability distribution of a real number-valued random variable....
   to refer to the degree of asymmetry of a distribution. It can mean distortion in a positive or negative direction.

Telecommunication

• In parallel transmission, the difference in arrival time of bits transmitted at the same time.

• For data
  DATA
  
  Debt, AIDS, Trade in Africa is a multinational Non-governmental organization founded in January 2002 in London by U2's Bono along with Robert Sargent Shriver III and activists from the Jubilee 2000 Drop the Debt campaign....
   recorded on multichannel
  Multichannel
  
  Multichannel can refer to:*Surround sound *Multichannel Multipoint Distribution Service *Multichannel television sound*Multichannel television in Canada...
   magnetic tape
  Magnetic tape
  
  Magnetic tape is a medium for magnetic recording generally consisting of a thin magnetizable coating on a long and narrow strip of plastic. Nearly all recording tape is of this type, whether used for recording Audio frequency or video or for computer data storage....
  , the difference between reading
  Reading (technical)
  
  Reading is an action performed by computers, to acquire data from a source and place it into their volatile memory for processing. For example, a computer may read information off a floppy disk and store it in random access memory to be placed on the hard drive to be processed at a future date....
   times of bits recorded in a single transverse line.

• In facsimile
  Fax
  
  Fax is a telecommunications technology used to transfer copies of documents, especially using affordable devices operating over the telephone network....
   systems, the angular deviation of the received frame from rectangularity caused by asynchronism between the scanner
  Scanner
  
  Scanner may refer to a number of technological devices:* Scanner , for searching for and receiving radio broadcasts* A rotating radar antenna...
   and the recorder.

• In facsimile, the angle between the scanning line, or recording line, and the perpendicular to the paper path.

:Example of +1 degree (counter-clockwise) skew in a facsimile image. The red line is perfectly horizontal.

Computers

• Clock skew
  Clock skew
  
  In circuit designIn circuit designs, clock skew is a phenomenon in synchronous circuits in which the clock signal arrives at different components at different times....
  : a phenomenon in synchronous circuits in which the clock signal (sent from the clock circuit) arrives at different components at different times.

• In reference to computer disk drives, track-to-track skew is the angle between the start of the data on a given track and the start of the data on the next. This is important, as when reading the data in sequence from one track to the next, time must be allowed for the read/write head to move to the next track, during which the disk continues to rotate. Insufficient skew can force the drive to wait almost an entire revolution for the data to pass under the head again, resulting in extra revolutions per track to read the data. Excessive skew can also lower the sustained data transfer rate.

Computer graphics

Optics