Doppler Shift

When I stir sugar into coffee 
and I think I detect that 
subtle harmonic shift
I remember asking you—

Whenever it’s a question of physics,
I can almost hear your voice again.
When the phone rings—
your name on the screen—
then cuts off…
the sound of silence is no old friend, 
but a cruel Doppler shift

that came with such speed

no intellect could prepare us.