What's the difference between ripple and undulation?

Ripple


Definition:

  • (v.) An implement, with teeth like those of a comb, for removing the seeds and seed vessels from flax, broom corn, etc.
  • (v. t.) To remove the seeds from (the stalks of flax, etc.), by means of a ripple.
  • (v. t.) Hence, to scratch or tear.
  • (v. i.) To become fretted or dimpled on the surface, as water when agitated or running over a rough bottom; to be covered with small waves or undulations, as a field of grain.
  • (v. i.) To make a sound as of water running gently over a rough bottom, or the breaking of ripples on the shore.
  • (v. t.) To fret or dimple, as the surface of running water; to cover with small waves or undulations; as, the breeze rippled the lake.
  • (n.) The fretting or dimpling of the surface, as of running water; little curling waves.
  • (n.) A little wave or undulation; a sound such as is made by little waves; as, a ripple of laughter.
  • (n.) a small wave on the surface of water or other liquids for which the driving force is not gravity, but surface tension.
  • (n.) the residual AC component in the DC current output from a rectifier, expressed as a percentage of the steady component of the current.

Example Sentences:

  • (1) Past measurements have shown that the intensity range is reduced at the extremes of the F0 range, that there is a gradual upward tilt of the high- and low-intensity boundaries with increasing F0, and that a ripple exists at the boundaries.
  • (2) The 180-acre imperial palace appears to send ripples through the surrounding urban grain like a rock thrown into a pond, forming the successive layers of ring-roads.
  • (3) Shares in energy companies lost ground as the impact of the drop in oil prices rippled through European stock markets.
  • (4) The market is lightly regulated and any problems could ripple out into a wider credit crunch.
  • (5) But the move to inflate the price of Daraprim, which is the brand name for the generic drug pyrimethamine and was originally developed in the 1940s by corporate elements of the pharmaceutical giant now known as GlaxoSmithKline, has set off ripples of concern across the medical community.
  • (6) At least that seemed to be the lesson last week when the autumn statement confirmed a further £600m raid on the troubled universal credit – a move that didn't cause a ripple.
  • (7) Although only relatively few of the mildly impaired elderly in the nursing home volunteered for the joint activity, the ripple effect of the project extended beyond the direct participants.
  • (8) Panic rippled through the crowd as riot police advanced repeatedly with batons drawn before being later backed up by dozens of mounted police.
  • (9) He has described himself as "semi-retired" and, as unrest rippled through Tibetan areas in 2008, threatened to resign as leader of the administration-in-exile if violence continued.
  • (10) There is a ripple of applause and the odd cheer each time.
  • (11) The result suggests that the rearrangement of the ripple structure takes place during temperature change successively.
  • (12) The time has come to relegate psychoanalysis to its proper place as a moment in the historical development of psychiatry and a ripple in 20th century western culture.
  • (13) However, while the return of rising property prices which started in London has been rippling out to the regions, Zoopla claimed that in some parts of the country homes are worth less than at the turn of the year.
  • (14) (The day before, they filmed a car chase down the main street and the excitement still ripples through the glutinous air.)
  • (15) Random grenade blasts and gunfire sent ripples of tension through the crowds, tearful women ducking as explosions rocked the courtyard.
  • (16) The a parameter (proportional to the lamellar repeat distance) increases with increasing water content, while the b parameter (a measure of the ripple periodicity) decreases with increasing water content.
  • (17) Secondary rippled structures are observed in the low temperature L beta'-phase for cholesterol content below approx.
  • (18) They were formed by parallel filaments of 6-10 nm beaded periodically by electron-dense particles of 10-18 nm in a lattice, hexagonal or parallel-ripple pattern.
  • (19) Meanwhile, barely a ripple was caused by the seeming incongruity of insisting on those on higher incomes to shoulder more of the burden, while failing to repeat the pledge from last year’s Westminster manifesto to introduce a 50p top rate of tax.
  • (20) In contrast, application of 4-AP to nerves injured by the placement of loose ligatures results in the appearance of late rippled components in the compound action potential.

Undulation


Definition:

  • (n.) The act of undulating; a waving motion or vibration; as, the undulations of a fluid, of water, or of air; the undulations of sound.
  • (n.) A wavy appearance or outline; waviness.
  • (n.) The tremulous tone produced by a peculiar pressure of the finger on a string, as of a violin.
  • (n.) The pulsation caused by the vibrating together of two tones not quite in unison; -- called also beat.
  • (n.) A motion to and fro, up and down, or from side to side, in any fluid or elastic medium, propagated continuously among its particles, but with no translation of the particles themselves in the direction of the propagation of the wave; a wave motion; a vibration.

Example Sentences:

  • (1) Three mechanisms play an important role: true elongation of the length of the nerve in the relaxed state against elastic forces; movement of the nerve trunk in the longitudinal direction; and increase and decrease of the tissue relaxation at the level of the nerve trunk (relaxed course) and the nerve fibers (change in the undulated course).
  • (2) In irregular undulation 89.1% of the time corresponded to Stage 2.
  • (3) These two forms could easily be differentiated by examination of the undulating membrane and kinetoplast.
  • (4) The findings were confirmed by a histopathological analysis showing the development of coagulative necrosis and myocytolysis as well as undulations of heart muscle cells as a sign of cardiogenic shock.
  • (5) Paroxysmal headache of the migraine type as well as permanent undulating headache (which we call cephalea) can lead to chronification, both often mixes within the chronification.
  • (6) After treatment with the contraction medium of Hoffmann-Berling, the filaments appear to be undulated.
  • (7) An undulating lightweight roof is supported by 211 narrow steel columns, sheltering a glass box holding the cafe and shop, and a chestnut timber-covered box holding the displays.
  • (8) The original concept of the blood pump is represented by an asymmetrical type of pump with an asymmetrical diaphragm and undulating motion of the diaphragm allowing optimal washing of the blood chamber.
  • (9) When blastomers cease cleaving, their surfaces undulate and form blebs.
  • (10) Foremost among these is a modification of the cell wall from an undulating structure to one which is smooth and has become enlarged.
  • (11) The distal fibular physis also begins as a transverse structure that becomes undulated and has extensive peripheral lappet formation.
  • (12) Undulations in the levels of all responses were noted; the "weaker" the antigen the larger the undulations.
  • (13) Tendon fibers lose their typical undulating appearance and become quite straight.
  • (14) On the rehabilitation ward of a tertiary care hospital, the patient developed undulating fever to 39.6C, rapidly worsening peripheral vascular disease, and pulmonary emboli.
  • (15) All human sera, from patients with tuberculosis as well as from control subjects, gave almost identical undulating patterns of reactivity with the decapeptides.
  • (16) For instance, platelets probably contract, possess a microfilament network, and behave like undulating membrane organelles.
  • (17) The incidence of the 60-69 year old males dropped in a range of 10%; that of the females with the same age had an undulating course with rising trend.
  • (18) The characteristic features of laparoscopic appearance--gentle undulation--were observed in 11 out of 13 (85%) patients with PBC.
  • (19) Tortuous undulating agranular endoplasmic reticulum (ER) was usually closely associated with microperoxisomes.
  • (20) Conversely, nerve shortening enhanced the undulation.