doppler
Frequency shift phenomenon
Doppler is informal shorthand for Doppler radar or the Doppler effect—the phenomenon where waves change frequency as the source moves toward or away from an observer.
Weather forecasters use doppler to track storms by measuring how precipitation moves: The doppler shows rain moving in from the west.
Medical ultrasounds use doppler technology to measure blood flow. (Capitalized Doppler refers to the physicist.)
Atmospheric state outdoors
- forecastingEstimating future conditions
- meteorologyStudy of atmospheric phenomena
- stormSevere atmospheric disturbance
- trackingMonitoring location over time
velocity · precipitation · tornado · hurricane · cyclone · typhoon · reflectivity · thunderstorm
Inaudible high-frequency waves
- echocardiogramUltrasound of the heart
- sonogramUltrasound-produced medical image
- fetalOf the unborn
- bloodflowVascular fluid movement
transducer · cardiology · vascular · imaging · artery · vein · circulation · stenosis
Navigation through reflected sound
- hydrophoneSubmersible sound sensor
- underwaterBelow the surface
- submarineUnderwater naval craft
- pingBrief metallic tone
whale · dolphin · marine · acoustic · detection · navigation · depth · bathymetry
weather
Atmospheric state outdoors
- forecastingEstimating future conditions
- meteorologyStudy of atmospheric phenomena
- stormSevere atmospheric disturbance
tracking · velocity · precipitation · tornado · hurricane · cyclone · typhoon · reflectivity · thunderstorm · convection
ultrasound
Inaudible high-frequency waves
- echocardiogramUltrasound of the heart
- sonogramUltrasound-produced medical image
- fetalOf the unborn
bloodflow · transducer · cardiology · vascular · imaging · artery · vein · circulation · stenosis · aneurysm
echolocation
Navigation through reflected sound
- hydrophoneSubmersible sound sensor
- underwaterBelow the surface
- submarineUnderwater naval craft
ping · whale · dolphin · marine · acoustic · detection · navigation · depth · bathymetry · torpedo
- medical toolsstethoscope, otoscope, ophthalmoscope, catheter, reflex hammer
- childbirthcontractions, labor, pushing, dilation, birth
- prenatal careprenatal vitamins, prenatal care, prenatal checkups, fetal ultrasound, prenatal checkup
- WitcherLambert, signs, medallion, white wolf, silver sword
- ultrasound equipmentultrasound machine, transducer, probe, 3D ultrasound, 4D ultrasound
- Vascular Testsangiogram, angiography, arteriography, venogram, vascular ultrasound
dopplerpositional
Relating to placement
snapshot · time-of-flight · triangulation · parallax · ranging
- Doppler effectWave compression from motion
- Doppler radarMotion-sensing weather instrument
- Doppler shiftFrequency change from movement
- doppler ultrasoundImaging of circulation movement