y = Asinwx
= Asin(wx+2π) plus 2π does not affect the result.
= Asinw(x + 2π/w)
In other words, X becomes x+2π/w, which does not affect the result. 2π/w becomes a full stop.
The previous 2π does not affect the result, and 2π is the period, which is the period of the whole phase;
The current period 2π/w is converted into a period based on spatial distance.
So, there are three cycles:
1, phase period after conversion;
2. Spatial period of transformation;
3. Time period of conversion.