Please enable JavaScript.
Coggle requires JavaScript to display documents.
*Chapter 1 (Analogue signal (Electromagnetic system (Uqniue properties…
*Chapter 1
Analogue signal
-
-
Wavelength of wave: waveform to complete a cycle
Period measure from two successive wave, Crest or troughs
-
Frequency: number of complete wave per unit time
Unit measurements: Hertz (Hz), cycle per second
-
Electromagnetic system
Uqniue properties frequency:
Radio waves
Microwaves
Infrared waves
Visible lights
Ultraviolet waves
X-ray
Gamma ray
-
-
-
Boardcasting
Terrestrial broadcast
-
To mass audience via one-way electronic communication media such as radio, television and internet streaming
-
-
-