It is explained in detail that geometric vectors are widely used in physics and mathematics, but there is an academic term called phasor in physics, which is very similar to the pronunciation of vectors. In order to avoid unnecessary troubles caused by mispronunciation or misinformation, an image term-vector (quantity with arrow) is adopted to better distinguish phasor from vector (vector) in Chinese communication. Therefore, vectors and vectors are both vectors, and their mathematical meanings are exactly the same, except that vectors are called much in mathematics and much in physics.
Comparing a vector (vector) with only size and no direction is called scalar.
Phasor phasor is a vector used to represent the magnitude and phase of sine in electronic engineering. When the frequency is constant, phasor only represents sine quantity. Draw sine phasors with the same frequency on the same complex plane (polar coordinate system), which is called phasor diagram.