Then, Raman-active modes can be found for molecules or crystals that show symmetry by using the appropriate character table for that symmetry group.

The Lindemann criterion states that melting occurs because of vibrational instability, e. g. crystals melt when the average amplitude of thermal vibrations of atoms is relatively high compared with interatomic distances, e. g. < δu < sup > 2 </ sup >> 1 / 2 > δ < sub > L </ sub > R < sub > s </ sub >, where δu is the atomic displacement, the Lindemann parameter δ < sub > L </ sub > ≈ 0. 20 ... 0. 25 and R < sub > s </ sub > is a half of the inter-atomic distance.

Such indications may take various forms, including sounds, visions, vibrations and / or spontaneous physical movements similar to, though perhaps more intense than, those experienced in the usual latihan.

It commonly occurs when a motorist decelerates from speeds of around 120 km / h ( 74. 6 MPH ) to about 60 km / h ( 37. 3 MPH ), which results in severe vibrations being transmitted to the driver.

Once the brake pads ( friction material / brake lining ) comes in contact with the sinusoidal surface during braking, severe vibrations are induced, and can produce hazardous conditions for the person driving the vehicle.

In the automotive industry, for example, it damps the vibrations between interior panels and also stops dirt entering into some ball / cup joints.

Finally, vibrations where the individual cameras and / or projectors vibrate independently, jittering vertical lines present themselves at one-third and two-thirds of the way across the screen.

** Geophone – converts a ground movement ( displacement ) into voltage ( vibrations → motion of conductor / coil → magnetic field → signal )

Suspension systems serve a dual purpose — contributing to the vehicle's roadholding / handling and braking for good active safety and driving pleasure, and keeping vehicle occupants comfortable and reasonably well isolated from road noise, bumps, and vibrations, etc.

With the help of control system, various semi-active / active suspensions realize an improved design compromise among different vibrations modes of the vehicle, namely bounce, roll, pitch and warp modes.

Combat experience revealed some deficiencies in the SM. 79: the lack of oxygen masks for high altitude operation, instability, vibrations experienced at speeds over 400 km / h ( 250 mph ) and other problems were encountered and sometimes solved.

For the case of propagation through a duct, wall vibrations and viscous forces at the air / wall interface ( boundary layer ) can also have a significant effect, especially at high frequencies for the latter.

One hypothesis, backed by electromyographic studies, is that cats produce the purring noise by using the vocal folds and / or the muscles of the larynx to alternately dilate and constrict the glottis rapidly, causing air vibrations during inhalation and exhalation.

CED's inexpensive record-like format ( using a fine keel-shaped stylus to read an electronic signal rather than mechanical vibrations ) made it attractive to low-income families during the 1980s, and LaserDisc's 5 megahertz / 420 line resolution made it popular with discerning videophiles until circa 1997 ( when DVD-Video became the new standard for high-quality ).

However, it was necessary to augment Asher's lyrics with Mike Love's, which include the opening line (" I, I love the colorful clothes she wears ,") the chorus couplet (" I'm pickin ' up good vibrations / She's givin ' me the excitations ") and the two bridges ( the " I don't know where but she sends me there " section, and the " Gotta keep those lovin '- good vibrations happenin ' with her " section.

: In case of propeller / tail proximity, a blade break can impact the tail or produce destructive vibrations leading to a loss of control.

The mass resists the acceleration of the vibration and the energy dissipating ( rubber / clutch / fluid ) element absorbs the vibrations.

A sonic drill head works by sending high frequency resonant vibrations down the drill string to the drill bit, while the operator controls these frequencies to suit the specific conditions of the soil / rock geology.

They shake their wings and pose, walk with pride, pull their head back to reveal a large chest, lift the legs, and in some styles have neck / head vibrations similar to that of a pigeon.

* 1965: Girard-Perregaux designed the first mechanic movement at high frequency, at which the balancer beats at 36, 000 vibrations / hour: the Gyromatic HF.

This light that is released can be absorbed by other molecules in solution to give rise to molecular vibrations or rotations, which gives rise to the classical understanding of heat.

These rotations and vibrations are quantized, there are discrete energy levels.

* Second are the resonance effects, which arise from the rotations or vibrations of atoms, ions, or electrons.

Moreover, knowing that the proper separation of vibrations and rotations was not achieved in this paper, but only eight years later

Around that time, he formed a group of young scientists to work on radiospectroscopy of molecular rotations and vibrations, and later on quantum electronics.

The kinetic energy is due to the motion of the system's particles ( translations, rotations, vibrations ), and the potential energy is associated with the static constituents of matter, static electric energy of atoms within molecules or crystals, and the static energy of chemical bonds.

Although molecular vibrations and rotations do have some effect on one other, this interaction is usually small.

These rotations and vibrations are quantized, there are discrete energy levels.

* Can we experimentally test quantum mechanical predictions of the vibrations and rotations of simple molecules?

In the adult state they have tear ducts and movable eyelids and most species have ears that can detect airborne or ground vibrations.

Particularly with some lower-priced embossers, it is sometimes necessary to mount the embosser on its own table, as otherwise the vibrations can damage the computer by eventually causing microchips and other components to come loose from the circuit boards.

Because the vibrations resonate in the shell of the drum, the shell can be used to increase the volume and to manipulate the type of sound produced.

Cyclic processes that are not electrical in nature, such as the rotation rate of a shaft, mechanical vibrations, or sound waves, can be converted to a repetitive electronic signal by transducers and the signal applied to a frequency counter.

It can undergo ' non-radiative relaxation ' in which the excitation energy is dissipated as heat ( vibrations ) to the solvent.

They also have a lateral line similar to that of fish, with which they can detect vibrations in the water.

The higher-energy near-IR, approximately 14000 – 4000 cm < sup >− 1 </ sup > ( 0. 8 – 2. 5 μm wavelength ) can excite overtone or harmonic vibrations.

Thus, the frequency of the vibrations can be associated with a particular bond type.

Recording can be done using virtually any form of energy, spanning from manual muscle power in handwriting, to acoustic vibrations in phonographic recording, to electromagnetic energy modulating magnetic tape and optical discs.

Large nonradiative transitions do not occur frequently because the crystal structure generally can not support large vibrations without destroying bonds ( which generally doesn't happen for relaxation ).

They lack true ears but have lateral lines running down the length of the body and underside, which is how they can sense movements and vibrations in the water.

For critical applications the quartz oscillator is mounted in a temperature-controlled container, called a crystal oven, and can also be mounted on shock absorbers to prevent perturbation by external mechanical vibrations.

Resonant systems can be used to generate vibrations of a specific frequency ( e. g. musical instruments ), or pick out specific frequencies from a complex vibration containing many frequencies ( e. g. filters ).

This includes electronic noise, but can also include external events that affect the measured phenomenon — wind, vibrations, gravitational attraction of the moon, variations of temperature, variations of humidity, etc., depending on what is measured and of the sensitivity of the device.

Similar stages to be modelled can be found in instruments such as a violin, though the energy excitation in this case is provided by the slip-stick behavior of the bow against the string, the width of the bow, the resonance and damping behavior of the strings, the transfer of string vibrations through the bridge, and finally, the resonance of the soundboard in response to those vibrations.

This can be contrasted with conductive heat transfer, which is the transfer of energy by vibrations at a molecular level through a solid or fluid, and radiative heat transfer, the transfer of energy through electromagnetic waves.

* Auda-Auda is equipped with sensitive audio receptors and can provide information on sounds and vibrations.

Most string instruments can be fitted with piezoelectric or magnetic pickups to convert the string's vibrations into an electrical signal that is amplified and then converted back into sound by loudspeakers.

However, the energy in a decay can be taken up or supplied by lattice vibrations.

Normally wave equations in physics can be derived from other physical laws-the wave equation for mechanical vibrations on strings and in matter can be derived from Newton's laws-where the analogue wavefunction is the displacement of matter, and electromagnetic waves from Maxwell's equations, where the wavefunctions are electric and magnetic fields.

The normal mode is important because any arbitrary lattice vibration can be considered as a superposition of these elementary vibrations ( cf.