• The wave (electromagnetic wave carried by photon - gauge
boson) starts at the 0-degree phase (0 radians) and has no amplitude.
• The wave reaches positive peak amplitude at the 90-degree
phase (0.5π radians).
• The wave returns to its amplitude rest position at the 180-degree
phase (π radians).
• The wave reaches negative peak amplitude at the 270-degree
phase (1.5π radians)
• Finally, the wave reaches zero peak amplitude at the 360-degree phase (2π radians).
Frequency (f) is inversely proportional to the period of its oscillation i.e. f=1/T.
A complete cycle of wave (i.e. f=1Hz) consists of 360° of
phase.
=> 1° phase shift = T/360.
=> 90° phase shift = 90T/360.
=> 180° phase shift = 180T/360.
=> 270° phase shift = 270T/360.
=> 360° phase shift = T (=360T/360)
This means a complete cycle of wave (f= 1 Hz) has 360° of
its phase.
Time period (T) of a cycle (with 360° phase) of wave, when it's frequency f=1 Hz.
And therefore, 360° phase = T (period of the wave).
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