In electrical transmission line

Transmission line

In communications and electronic engineering, a transmission line is a specialized cable designed to carry alternating current of radio frequency, that is, currents with a frequency high enough that its wave nature must be taken into account...

s, the term loading means the insertion of impedance

Electrical impedance

Electrical impedance, or simply impedance, is the measure of the opposition that an electrical circuit presents to the passage of a current when a voltage is applied. In quantitative terms, it is the complex ratio of the voltage to the current in an alternating current circuit...

 into a circuit

Telecommunication circuit

A telecommunication circuit is any line, conductor, or other conduit by which information is transmitted.A dedicated circuit, private circuit, or leased line is a line that is dedicated to only one use...

 to change the characteristics of the circuit.

The loading of a communication channel may be expressed as (a) the equivalent mean power and the peak power as a function of the number of voice channels or (b) the equivalent power of a multichannel complex or signal composite referred to zero transmission level point (0TLP).

Non electrical

Chemically, loading is the process by which insoluble small suspended particles are made heavier by adding alum in order to increase the rate of sedimentation of particles.

Computers and electronic devices take time to save or open files, which is commonly tracked with a loading bar, or progress bar

Progress bar

A progress bar is a component in a graphical user interface used to convey the progress of a task, such as a download or file transfer. Often, the graphic is accompanied by a textual representation of the progress in a percent format....

 as it is officially named. They show progress with visual representation, i.e. filling a box, and may include amount processed or percentage processed. These bars help the user understand how much time they have to wait. Most have the word "Loading..." somewhere on the bar, hence the term "Loading bar".

See also

• Electric load
  External electric load
  If an electric circuit has a well-defined output terminal, the circuit connected to this terminal is the load....
  
  
• Loading coil
  Loading coil
  In electronics, a loading coil or load coil is a coil that does not provide coupling to any other circuit, but is inserted in a circuit to increase its inductance. The need was discovered by Oliver Heaviside in studying the disappointing slow speed of the Transatlantic telegraph cable...
  
  
• Electrical lengthening
  Electrical lengthening
  Electrical lengthening is the modification of an aerial which is shorter than a whole-number multiple of a quarter of the radiated wavelength, by means of a suitable electronic device, without changing the physical length of the aerial, in such a way that it corresponds electrically to the next...
  
  

Non electrical

• Dynamic loading
  Dynamic loading
  Dynamic loading is a mechanism by which a computer program can, at run time, load a library into memory, retrieve the addresses of functions and variables contained in the library, execute those functions or access those variables, and unload the library from memory...
  
  
• Loaded language
  Loaded language
  In rhetoric, loaded language is wording that attempts to influence the certain audience by using to emotion....
  
  
• Loading gauge
  Loading gauge
  A loading gauge defines the maximum height and width for railway vehicles and their loads to ensure safe passage through bridges, tunnels and other structures...
  
  
• Progress bar
  Progress bar
  A progress bar is a component in a graphical user interface used to convey the progress of a task, such as a download or file transfer. Often, the graphic is accompanied by a textual representation of the progress in a percent format....