Doppler Sentence Examples

We have seen above numerous applications of the Doppler effect.

We can detect these small motions by looking at the Doppler shift in spectral lines emitted by atoms in the solar surface.

He initiated in 1866 the spectroscopic observation of sunspots; applied Doppler's principle in 1869 to determine the radial velocities of the chromospheric gases; and successfully investigated the chemistry of the sun from 1872 onward.

In 1868 he proved incandescent carbon-vapours to be the main source of cometary light; and on the 23rd of April in the same year applied Doppler's principle to the detection and measurement of stellar velocities in the line of sight.

Further, auroras are often possessed of rapid motion, so that conceivably spectral lines may receive small displacements in accordance with Doppler's principle.

If both the bodies are luminous, especially if they do not differ much in brilliancy, the motion of revolution is shown by a periodic doubling of the lines of the spectrum; when one body is moving towards us and the other away their spectral lines are displaced (according to Doppler's principle) in opposite directions, so that all the lines strong enough to appear in both spectra appear double; when the two bodies are in conjunction, and therefore moving transversely, their spectra are merged into one and show nothing unusual.

Larmor suggests is due to relaxation of the spring of the surrounding ether by reason of the crowding of the molecules; a shift of 0.17 tenth-metres would, if interpreted by Doppler's principle, have been read as a receding velocity of I I km.

But Doppler's idea that they might be detected by colour-change was entirely illusory.

To this end we are researching ways of utilizing a single etalon for multiple channels of Doppler information.

Navigation is state of the art with ring laser gyros, inertial reference systems GPS, doppler and radar altimeters.

Todays weather plus a 36 hour forecast and doppler radar.

Racing and revving as if enacting a Doppler Effect experiment, the wheelie artist puts paid to hopes of an afternoon snooze.

Brachial systolic and diastolic pressure and ankle systolic pressures were measured using a Hawksley random zero sphygmomanometer and Doppler probe.

More recently hand-held doppler ultrasound has become available to supplement the clinical evaluation.

A color duplex Doppler ultra sound revealed gross short saphenous vein (SSV) reflux.

Methods based on the Doppler effect are commonly used to study blood flow, often in conjunction with ultrasound imaging.

Skin perfusion was measured at the volar surface of the forearm using the laser Doppler perfusion imager.

By tracing how the wavelength of the radiation varies we can measure the velocity of the Hydrogen, using the Doppler shift.

Echo is often combined with Doppler ultrasound and color Doppler.

Other tests to diagnose stroke may include a transcranial Doppler ultrasound and neurosonogram.

In a transcranial Doppler ultrasound, sound waves are used to measure blood flow in the vessels of the brain.

Besides EFM and telemetry, which is usually continuous, there is intermittent monitoring using a hand-held Doppler to assess the FHR.

A combination of high-frequency ultrasound and color Doppler studies has also been shown to have a high degree of accuracy in distinguishing between melanomas and benign moles.

The site and the extent of coarctation may also be detected using color-flow Doppler ultrasonography (echocardiology).

Color-flow Doppler studies may show a reduced blood flow below the coarctation.

A Doppler echo uses sound waves to measure blood flow.

Doppler ultrasound techniques were as of 2004 under study as a radiation exposure-free alternative to VCUG.

Doppler flow studies of the uterine artery provide information regarding the blood flow to the uterus.

Doppler studies on the umbilical cord artery and the middle cerebral artery also provide information regarding fetal growth.

A physician or specially trained ultrasonographer performs Doppler flow studies, which examines the blood flow in the umbilical artery and the baby's middle cerebral artery.

Your wellness practitioner will check on the heart rate externally using a device known as a Doppler.

Doppler on Wheels (DOW) - Several DOWs appear on the show.

These are mobile Doppler radar units that provide precise storm tracks and meteorological information so that the storm chasers can predict outbreaks and determine where they can enter storms safely.

The conclusion seemed natural that the spectra which showed the Doppler effect were due to vibratory systems which had an excess of positive charge.

The principle that the refrangibility of light is altered by endon motion was enunciated by Christian Doppler of Prague in 1842.

Dorn 5 has found the Doppler effect with a number of lines of helium, which contain representatives of the trunk series as well as of the two branch series.

The irregularities incidental to use of the spots are escaped by comparing the relative Doppler displacements of the same spectral line as given by the receding and advancing limbs of the sun.

We have first the Doppler effect, which, according to Michelson's experiment, is the chief cause of the limit at very low pressures, but it is too small to account for the widening which is now under discussion.

A limit to homogeneity of radiation is ultimately set by the so-called Doppler effect, which is the change of wave-length due to the translatory motion of the vibrating molecule from or towards the observer.