Encyclopedia > Up

  Article Content

Up

Up describes the positive z-value in a gravitational field, just as "down" represents the negative z-value. The z-axis is the only axis that is not apparently arbitrary. The x and y values, "North", "South", "East", and "West" do in fact exist (and are named relative to the direction of the Earth's spin) but are not readily apparent.

A computer or machine is said to be up when it's working properly, and down when it isn't.



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Brazil

... a four-year period, two-thirds elected after the next four-year period. Beside the Senate there is the Chamber of Deputies or Cāmara dos Deputados of 513 seats, whos ...

 
 
 
This page was created in 24.2 ms