[单选题]
When a distant source emits c9ze -ox x;e* q/j6on6z: jufelight of 16o ld ctwoc 73chpq0;a particular wavelength in the visible, and the source is moving away from us, the color of the light appears to us to bl 3 co1wph;q60d occt7e shifted toward the
A. red end of the visible spectrum.
B. blue end of the visible spectrum.
Post time 2024-1-22 00:41:59