Resonance 104.4fm, London, United Kingdom. The world's most creative radio station. Broadcasting on 104.4FM in central London, on small scale DAB in Greater London, and on line worldwide.

Increase of amplitude as damping decreases and frequency approaches resonant frequency of a driven.In, resonance describes the phenomenon of amplification that occurs when the of a applied is in proportion to a of the system on which it acts. When an force is applied at a of a dynamical system, the system will oscillate at a higher amplitude than when the same force is applied at other, non-resonant frequencies.Frequencies at which the response amplitude is a are also known as resonant frequencies or resonance frequencies of the system. Small periodic forces that are near a resonant frequency of the system have the ability to produce large amplitude oscillations in the system due to the storage of.Resonance phenomena occur with all types of vibrations or: there is, resonance, (NMR), (ESR) and resonance of quantum. Resonant systems can be used to generate vibrations of a specific frequency (e.g., ), or pick out specific frequencies from a complex vibration containing many frequencies (e.g., filters).The term resonance (from resonantia, 'echo', from resonare, 'resound') originated from the field of acoustics, particularly the observed in musical instruments, e.g., when one string starts to vibrate and produce sound after a different one is struck. Another example, occurs in a with and because the collapsing magnetic field of the inductor generates an electric current in its windings that charges the capacitor, and then the discharging capacitor provides an electric current that builds the magnetic field in the inductor. Once the circuit is charged, the oscillation is self-sustaining, and there is no external periodic driving action. This is analogous to a mechanical, where is converted back and forth between and, and both systems are forms of.

Contents.Overview Resonance occurs when a system is able to store and easily transfer energy between two or more different (such as kinetic energy and potential energy in the case of a simple pendulum). However, there are some losses from cycle to cycle, called. When damping is small, the resonant frequency is approximately equal to the of the system, which is a frequency of unforced vibrations. Some systems have multiple, distinct, resonant frequencies.Examples.

Pushing a person in a is a common example of resonance. The loaded swing, a, has a of oscillation, its resonant frequency, and resists being pushed at a faster or slower rate.A familiar example is a playground, which acts as a. Pushing a person in a swing in time with the natural interval of the swing (its resonant frequency) makes the swing go higher and higher (maximum amplitude), while attempts to push the swing at a faster or slower tempo produce smaller arcs. This is because the energy the swing absorbs is maximized when the pushes match the swing's natural oscillations.Resonance occurs widely in nature, and is exploited in many manmade devices. It is the mechanism by which virtually all waves and vibrations are generated. Many sounds we hear, such as when hard objects of, or are struck, are caused by brief resonant vibrations in the object. Light and other short wavelength is produced by resonance on an, such as in atoms.

Main article:The dramatically visible, rhythmic twisting that resulted in the 1940 collapse of 'Galloping Gertie', the original, is mistakenly characterized as an example of resonance phenomenon in certain textbooks. The catastrophic vibrations that destroyed the bridge were not due to simple mechanical resonance, but to a more complicated interaction between the bridge and the winds passing through it—a phenomenon known as, which is a kind of 'self-sustaining vibration' as referred to in the nonlinear theory of vibrations., father of, has written an article about this misunderstanding. International Space Station The for the (ISS) are controlled by an. Ordinarily, uploaded parameters for controlling the engine control system for the Zvezda module make the rocket engines boost the International Space Station to a higher orbit. The rocket engines are -mounted, and ordinarily the crew doesn't notice the operation. On January 14, 2009, however, the uploaded parameters made the autopilot swing the rocket engines in larger and larger oscillations, at a frequency of 0.5 Hz. These oscillations were captured on video, and lasted for 142 seconds.

Types of resonance Mechanical and acoustic resonance. School resonating mass experimentis the tendency of a to absorb more energy when the of its oscillations matches the system's of than it does at other frequencies. It may cause violent swaying motions and even catastrophic failure in improperly constructed structures including bridges, buildings, trains, and aircraft. When designing objects, must ensure the mechanical resonance frequencies of the component parts do not match driving vibrational frequencies of motors or other oscillating parts, a phenomenon known as.Avoiding resonance disasters is a major concern in every building, tower, and project. As a countermeasure, can be installed to absorb resonant frequencies and thus dissipate the absorbed energy. The building relies on a 660-tonne (730-short-ton)—a —to cancel resonance. Furthermore, the structure is designed to resonate at a frequency that does not typically occur.

Buildings in zones are often constructed to take into account the oscillating frequencies of expected ground motion. In addition, designing objects having engines must ensure that the mechanical resonant frequencies of the component parts do not match driving vibrational frequencies of the motors or other strongly oscillating parts.keep time by mechanical resonance in a, or.The cadence of runners has been hypothesized to be energetically favorable due to resonance between the elastic energy stored in the lower limb and the mass of the runner.is a branch of that is concerned with the mechanical vibrations across the frequency range of human hearing, in other words. For humans, hearing is normally limited to frequencies between about 20 and 20,000 Hz (20 ), Many objects and materials act as resonators with resonant frequencies within this range, and when struck vibrate mechanically, pushing on the surrounding air to create sound waves. This is the source of many percussive sounds we hear.Acoustic resonance is an important consideration for instrument builders, as most acoustic use, such as the and body of a, the length of tube in a, and the shape of, and tension on, a drum membrane.Like mechanical resonance, acoustic resonance can result in catastrophic failure of the object at resonance. The classic example of this is breaking a wine glass with sound at the precise resonant frequency of the glass, although this is difficult in practice.

Electrical resonance. Animation illustrating electrical resonance in a, consisting of a (C) and an (L) connected together. Charge flows back and forth between the capacitor plates through the inductor. Energy oscillates back and forth between the capacitor's ( E) and the inductor's ( B).occurs in an at a particular resonant frequency when the of the circuit is at a minimum in a series circuit or at maximum in a parallel circuit (usually when the peaks in absolute value). Resonance in circuits are used for both transmitting and receiving wireless communications such as television, cell phones and radio. Optical resonance. Main article:An, also called an optical resonator, is an arrangement of that forms a for.

Optical cavities are a major component of, surrounding the and providing of the laser light. They are also used in and some.

Light confined in the cavity reflects multiple times producing standing waves for certain resonant frequencies. The standing wave patterns produced are called 'modes'. Differ only in frequency while differ for different frequencies and have different intensity patterns across the cross-section of the beam. And are examples of optical resonators that do not form standing waves.Different resonator types are distinguished by the focal lengths of the two mirrors and the distance between them; flat mirrors are not often used because of the difficulty of aligning them precisely. The geometry (resonator type) must be chosen so the beam remains stable, i.e., the beam size does not continue to grow with each reflection. Resonator types are also designed to meet other criteria such as minimum beam waist or having no focal point (and therefore intense light at that point) inside the cavity.Optical cavities are designed to have a very large.

A beam reflects a large number of times with little —therefore the frequency of the beam is small compared to the frequency of the laser.Additional optical resonances are and, which result in anomalous reflection and high evanescent fields at resonance. In this case, the resonant modes are guided modes of a waveguide or surface plasmon modes of a dielectric-metallic interface. These modes are usually excited by a subwavelength grating.Orbital resonance. Main article:In, an occurs when two bodies exert a regular, periodic gravitational influence on each other, usually due to their being related by a ratio of two small integers. Orbital resonances greatly enhance the mutual gravitational influence of the bodies. In most cases, this results in an unstable interaction, in which the bodies exchange momentum and shift orbits until the resonance no longer exists. Under some circumstances, a resonant system can be stable and self-correcting, so that the bodies remain in resonance.

Examples are the 1:2:4 resonance of 's moons, and, and the 2:3 resonance between. Unstable resonances with 's inner moons give rise to gaps in the.

The special case of 1:1 resonance (between bodies with similar orbital radii) causes large Solar System bodies to around their orbits by ejecting nearly everything else around them; this effect is used in the current.Atomic, particle, and molecular resonance. NMR Magnet at HWB-NMR, Birmingham, UK. In its strong 21.2- field, the proton resonance is at 900 MHz.(NMR) is the name given to a physical resonance phenomenon involving the observation of specific properties of an in the presence of an applied, external magnetic field.

Many scientific techniques exploit NMR phenomena to study, and non-crystalline materials through. NMR is also routinely used in advanced medical imaging techniques, such as in (MRI).All nuclei containing odd numbers of have an intrinsic. A key feature of NMR is that the resonant frequency of a particular substance is directly proportional to the strength of the applied magnetic field. It is this feature that is exploited in imaging techniques; if a sample is placed in a non-uniform magnetic field then the resonant frequencies of the sample's nuclei depend on where in the field they are located. Therefore, the particle can be located quite precisely by its resonant frequency., otherwise known as electron spin resonance (ESR), is a spectroscopic technique similar to NMR, but uses unpaired electrons instead. Materials for which this can be applied are much more limited since the material needs to both have an unpaired spin and be.The is the resonant and -free emission and absorption of photons by atoms bound in a solid form.appears in similar circumstances to at the level of.

However, they can also be thought of as unstable particles, with the formula above valid if Γ is the and Ω replaced by the particle's mass M. In that case, the formula comes from the particle's, with its mass replaced by the M + iΓ. The formula is further related to the particle's by the.Theory. Main article:The or quality factor is a parameter that describes how an or is, or equivalently, characterizes a resonator's relative to its center frequency.Higher Q indicates a lower rate of energy loss relative to the stored energy of the oscillator, i.e., the oscillations die out more slowly. A pendulum suspended from a high-quality bearing, oscillating in air, has a high Q, while a pendulum immersed in oil has a low Q. To sustain a system in resonance in constant amplitude by providing power externally, the energy provided in each cycle must be less than the energy stored in the system (i.e., the sum of the potential and kinetic) by a factor of Q / 2 π. Oscillators with high-quality factors have low, which tends to make them ring longer.driven having higher Q factors resonate with greater amplitudes (at the resonant frequency) but have a smaller range of frequencies around the frequency at which they resonate.

The range of frequencies at which the oscillator resonates is called the bandwidth. Thus, a high- Q in a radio receiver would be more difficult to tune, but would have greater, it would do a better job of filtering out signals from other stations that lie nearby on the spectrum. High Q oscillators operate over a smaller range of frequencies and are more stable. (See.)The quality factor of oscillators varies substantially from system to system.

Systems for which damping is important (such as dampers keeping a door from slamming shut) have Q = 1 / 2. Clocks, lasers, and other systems that need either strong resonance or high frequency stability need high-quality factors. Have quality factors around Q = 1000. The quality factor of and some high- Q can reach as high as 10 11 and higher.There are many alternate quantities used by physicists and engineers to describe how damped an oscillator is that are closely related to its quality factor. Important examples include: the, and bandwidth measured in.See also.

Katsuhiko Ogata (2005). System Dynamics (4th ed.). University of Minnesota. P. 617. (2005).

Tata McGraw-Hill. P. 6.10.

^ Resnick and Halliday (1977). Physics (3rd ed.). John Wiley & Sons. There is a characteristic value of the driving frequency ω' at which the amplitude of oscillation is a maximum. This condition is called resonance and the value of ω' at which resonance occurs is called the resonant frequency. CS1 maint: uses authors parameter.

K. Yusuf Billah and Robert H. Scanlan (1991). 59 (2): 118–124.:. Retrieved 2011-05-29. Oberg, James (4 February 2009).

NBC News. Snyder; Farley (2011). 'Energetically optimal stride frequency in running: the effects of incline and decline'. The Journal of Experimental Biology.

214 (12): 2089–95.:. Dover Publications, 1967, pp. 'Under very favorable conditions most individuals can obtain tonal characteristics as low as 12 Hz.' Instructional Resource Lab.

UCLA Physics & Astronomy. Retrieved 10 July 2017. A.

Siegman (1986). University Science Books. Resonance-approximation amplitude linewidth frequency Lorentzian real. Aspelmeyer M.; et al. 'Cavity optomechanics'. Review of modern physics. P. 1397.

Frederick Emmons Terman (1932). McGraw-Hill Book Company.

Terman frederick universal. William McC. Siebert (1986). P. 113. James H. Harlow (2004).

Parasite eve remake. Parasite Eve is a 1998 action role-playing survival horror video game developed and published by Square. The game is a sequel to the novel Parasite Eve, written by Hideaki Sena; it is also the first game in the Parasite Eve video game series. The story follows New York City police officer Aya Brea over a six-day span in 1997 as she attempts to. Parasite Eve is an American biological horror themed turn-based action RPG video game developed and published by Squaresoft (currently Square Enix) for the Sony PlayStation in 1998.It is the first game in the Parasite Eve series. The game is labelled as a PSOne Classic and was re-released on the North American PlayStation Store on March 15, 2011.

Pp. 2–216. Michael H. Tooley (2006). Pp. 77–78. 2008-05-04 at theExternal links Wikimedia Commons has media related to.

'The increase in amplitude of oscillation of an electric or mechanical system exposed to a periodic force whose frequency is equal or very close to the natural undamped frequency of the system.' .

a chapter from an online textbook., ' '.,. (usage of terms). demonstrating resonances on a string when the frequency of the driving force is varied. demonstrating the occurrence of resonance when the driving frequency matches with the natural frequency of an oscillator., including high-speed footage of glass breaking.

Show by radio station time ( 11:00) 10:00The Walkers Switch New Works for Radio - Resonance 104.4FM09:00Literary South (r) - Resonance 104.4FM08:00The Naked Short Club (r) - Resonance 104.4FM06:00A Reason to Wake Up - Resonance 104.4FM05:45Drift Shift (repeat) - Resonance 104.4FM05:00Sound Out (r) - Resonance 104.4FM04:00Isotopica (r) - Resonance 104.4FM03:00Definitely Dylan (r) - Resonance 104.4FM02:30Arty Facts (r) - Resonance 104.4FM01:30Black2comm (r) - Resonance 104.4FM00:00Artrocker (r) - Resonance 104.4FM.