In signal processing, the Gibbs phenomenon is undesirable because it causes artifacts, namely clipping from the overshoot and undershoot, and ringing artifacts from the oscillations.

A " reverse " Rijke effect — namely, that a Rijke tube will also produce audio oscillations if hot air flows through a cold screen — was first observed by Rijke's assistant Johannes Bosscha and subsequently investigated by German physicist Peter Theophil Rieß.

If the period of the Little – Parks oscillations is 2π with respect to the superconducting phase variable, from the formula above it follows that the period with respect to the magnetic flux is the same as the magnetic flux quantum, namely

( AGU geophysical monograph 33, 1985 ) note their existence in the GRIP core as " violent oscillations " in the δ < sup > 18 </ sup > O signal, and that they appear to correlate to events in the previous Camp Century core 1 400 km away, thus providing evidence for their corresponding to widespread climatic anomalies ( with only the Camp Century core, they could have been local fluctuations ).

For this reason, vegetation in the superpáramo must be highly resistant to such severe fluctuations in weather. 1 Air temperatures are low-cold at night and cool during the day with daily oscillations larger than the oscillations of monthly averages.

It is possible that this negative feedback is the backbone of Cdk activity controlled by M and S cyclin concentration oscillations.

Somitogenesis is thought to occur via a “ clock and wavefront ” model, in which largely cell autonomous oscillations in a network of genes and gene products causes cells to oscillate between a permissive and a non-permissive state in a consistently timed fashion like a clock.

Another often encountered expression when dealing with small oscillations or where damping is negligible is:

In the above expression, as a approaches zero, the number of oscillations per unit length of the sinc function approaches infinity.

In mice, Cry1 expression displays circadian rhythms in the suprachiasmatic nucleus, a brain region involved in the generation of circadian rhythms, with mRNA levels peaking during the light phase and reaching a minimum in the dark. These daily oscillations in expression are maintained in constant darkness.

The Space Shuttle Main Engine uses a system of fluted posts, which use heated hydrogen from the preburner to vaporize the liquid oxygen flowing through the center of the posts and this improves the rate and stability of the combustion process ; previous engines such as the F-1 used for the Apollo program had significant issues with oscillations that led to destruction of the engines, but this was not a problem in the SSME due to this design detail.

This change in shape would not be stable, and the water would not stay in our artificially contrived shape, but engage in a transient exploration of many shapes until non-ideal frictional forces introduced by sloshing, either against the sides of the bucket or by the non-ideal nature of the liquid, killed the oscillations and the water settled down to the equilibrium shape.

The Rayleigh Criterion implies that a thermoacoustic instability can be optimally controlled by having heat release oscillations 180 degrees out of phase with pressure oscillations at the same frequency.

This idea arose from proposals in the 1980s, by Christof von der Malsburg and Wolf Singer, that gamma oscillations could solve the so-called binding problem, by linking information represented in different parts of the brain into a unified experience.

Coronal loops are highly radiating sources of plasma and therefore easy to observe by instruments such as TRACE ; they are highly observable laboratories to study phenomena such as solar oscillations, wave activity and nanoflares.

Radio waves were not detected first from a natural source, but were rather produced deliberately an artificially by the German scientist Heinrich Hertz in 1887, using electrical circuits calculated to produce oscillations in the radio frequency range, following recipies suggested by the equations of James Clerk Maxwell.

A resonant circuit by itself is almost an oscillator ; it can store energy in the form of electronic oscillations if excited, but because it has some internal resistance or other losses the oscillations are damped and decline to zero.

Mathematical conditions for feedback oscillations, now called the Barkhausen criterion, were derived by Heinrich Georg Barkhausen in 1921.

At the age of 19, in the cathedral of Pisa, he timed the oscillations of a swinging lamp by means of his pulse beats and found the time for each swing to be the same, no matter what the amplitude of the oscillation, thus discovering the isochronal nature of the pendulum, which he verified by experiment.

The latter employs a magnetic field applied longitudinally to the beam direction, and monitors the relaxation of muon spins caused by magnetic oscillations with another magnetic nucleus.

A practical method for investigating neutrino oscillations was first suggested by Bruno Pontecorvo in 1957 using an analogy with kaon oscillations ; over the subsequent 10 years he developed the mathematical formalism and the modern formulation of vacuum oscillations.

In 1985 Stanislav Mikheyev and Alexei Smirnov ( expanding on 1978 work by Lincoln Wolfenstein ) noted that flavor oscillations can be modified when neutrinos propagate through matter.

The apparent motions of the compound oscillations typically appears very complicated but a more economic, computationally simpler and conceptually deeper description is given by resolving the motion into normal modes.

Or, equivalently, in terms of the wave's angular frequency ω, which specifies the number of oscillations per unit of time, and wavenumber k, which specifies the number of oscillations per unit of space, by

Radio waves were not detected first from a natural source, but were rather produced deliberately an artificially by the German scientist Heinrich Hertz in 1887, using electrical circuits calculated to produce oscillations in the radio frequency range, following recipes suggested by the equations of James Clerk Maxwell.

In the absence of external interactions, string dynamics are governed by tension and kinetic energy, which combine to produce oscillations.

Theories of consciousness have been linked to thalamocortical rhythm oscillations in TC-CT pathway activity.

Light waves incident on a material induce small oscillations of polarisation in the individual atoms ( or oscillation of electrons, in metals ), causing each particle to radiate a small secondary wave ( in all directions, like a dipole antenna ).

Applying alternating current to the quartz crystal will induce oscillations.

There are also natural mechanisms for variation including climate oscillations, changes in solar activity, variations in the Earth's orbit, and volcanic activity.

One idea that has drawn attention for several decades is that consciousness is associated with high-frequency ( gamma band ) oscillations in brain activity.

Models of working memory, relying on theories of network oscillations and persistent activity, have been built to capture some features of the prefrontal cortex in context-related memory.

Seismic activity can cause excessive oscillations of the building which may lead to structural failure.

This bi-lobed mass of nerve tissue, the cerebral ganglia, is sometimes referred to as the planarian brain and has been shown to exhibit spontaneous electrophysiological oscillations, similar to the electroencephalographic ( EEG ) activity of other animals.

This resting potential undergoes rhythmic oscillations, which have been termed slow waves, and reflect intrinsic activity of slow wave potentials.

The activity of K-complexes is transferred to the thalamus where it synchronizes the thalamocortical network during sleep, producing sleep oscillations such as spindles and delta waves.

Alpha waves are neural oscillations in the frequency range of 8 – 12 Hz arising from synchronous and coherent ( in phase / constructive ) electrical activity of thalamic pacemaker cells in humans.

Large-scale frequency oscillations and electrical rhythms have also been shown to regulate TC activity for long periods of time, as is evident during the sleep cycle.

In the field of computational neuroscience, the theory of metastability refers to the human brain ’ s ability to integrate several functional parts and to produce neural oscillations in a cooperative and coordinated manner, providing the basis for conscious activity.

Tall chimneys constructed of thin-walled steel tube can be sufficiently flexible that, in air flow with a speed in the critical range, vortex shedding can drive the chimney into violent oscillations that can damage or destroy the chimney.

and drives oscillations in the cell ’ s length, which occur at the frequency of the incoming sound and provide mechanical feedback amplification.