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A minute of arc is π 10 800 of a radian . A second of arc, arcsecond (arcsec), or arc second, denoted by the symbol ″, [2] is 1 60 of an arcminute, 1 3600 of a degree, [1] 1 1 296 000 of a turn, and π 648 000 (about 1 206 264.8) of a radian. These units originated in Babylonian astronomy as sexagesimal (base 60) subdivisions of the degree ...
Finger snapping. Snapping (or clicking) one's fingers is the act of creating a snapping or clicking sound with one's fingers. Primarily, this is done by building tension between the thumb and another ( middle, index, or ring) finger and then moving the other finger forcefully downward, so it hits the palm of the same hand at a high speed.
A typical wireless computer mouse. A computer mouse (plural mice, also mouses) [nb 1] is a hand-held pointing device that detects two-dimensional motion relative to a surface. This motion is typically translated into the motion of the pointer (called a cursor) on a display, which allows a smooth control of the graphical user interface of a ...
A double-click is the act of pressing a computer mouse button twice quickly without moving the mouse. Double-clicking allows two different actions to be associated with the same mouse button. It was developed by Bill Atkinson of Apple Computer (now Apple Inc.) for their Lisa project. [1] Often, single-clicking selects (or highlights) an object ...
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Double clicking refers to clicking and releasing a button (often the primary one, usually the left button) twice. Software recognizes both clicks, and if the second occurs within a short time, the action is recognised as a double click. If the second click is made after the time expires it is considered to be a new, single click.
v. t. e. The speed of light in vacuum, commonly denoted c, is a universal physical constant that is exactly equal to 299,792,458 metres per second (approximately 300,000 kilometres per second; 186,000 miles per second; 671 million miles per hour).
Click the kebab menu to the right of the search bar. Select Preferences on Mac and Linux, or Settings on Windows or Chrome OS. Under Search engine, select Manage search engines. If available, right-click in the address bar and select Edit search engines... instead. Under Site search, click Add and choose a name and keyword for Wikipedia search ...