Assertion: police radar | /r/CapableOf | determine vehicle
Facets:
value: by measuring the doppler
type: MANNER
value: unlike police laser
type: OTHER
value: directly
type: MANNER
Source sentences:
text: Unlike police laser, police radar directly determines a vehicle’s speed by measuring the doppler (speed induced) shift of the return of its transmitted frequency (think of the sound you sometimes hear of an approaching or receding train or emergency vehicle).