the physics of sound.doc

8/14/2019 The Physics of Sound.doc

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Sonic bubble enveloping a violin, frozen at a moment in time

nd in air does not travel as longitudinal waves as is commonly described in physics text books. Sagates spherically in air due to diffraction, the reactive result of atomic collisions. Reciprocal ef r in the jostling of molecules initiated by a sound event, causing components of the sonic energrections almost simultaneously. The distribution of energy within the sonic bubble is always cowith the direction of primary propagation from the sound source.



matic model of sound

nds audible to humans are, as we have seen, essentially, spherical in form and invisible under nmstances. Using the emergent science of cymatics it is possible to image sound wherein we arin an analog of the sound sample periodicities in a form that permits close study. maging sounres a membrane on which the periodicities can be made visible, such as thin latex or the surfa

r, typically captured by a still or video camera. "arly experiments with latex, using fine particulisclosing medium, showed fairly course detail in the geometry of the resulting #yma$lyphs. Th



on of water is now the preferred medium onto which sounds may be imprinted, revealing theirdetail and even revealing some %& data.

ould be noted that the inherent resonance of the driving system and the surface tension of theence the patterns obtained. These influences can be minimi'ed by the use of electronic filteringn, as far as is possible, the response of the water to the chosen range of fre!uencies. "ven so,ible to be totally free of the resonances in a given system and allowance must be made in theucted.

Ralph (aughan )illiams, *hantasy +uartet madevisible on the #ymaScope

Sound

n of gases that we term air consists of individual atoms, in the case of oxygen andmolecules, in the case of carbon dioxide. ther gases are present but in minor)hen sound propagates in air, every atom or molecule lying in the path ofnvolved in the process of passing on the sound data that originated from the sounda takes the form of sinusoidal motions of the atoms and molecules that are insound source. -or example, if a sound source produces a tone of single fre!uencyc motion of every atom and molecule will be of the same single periodicity. f the

roduces a complex sound, with a multiplicity of fre!uencies, the atoms andach carry this array of periodicities.

e is an example of a complex sound, wherein every single atom and molecule inorm air transmit a multitude of vibrations that describe the uni!ueness of the voice.



r molecule bumps into its nearest neighbors their many periodic motions,e sonic data of the voice, is passed on at the instant of collision. f we could see theeing emitted it would appear as a bubble of sonic energy, the surface of which would

every atom and molecule vibrating in unison.

sound is holographic. Theoretically, every atomic particle in a sonic bubbledata of the sound source.

Propagation

fre!uencies above the range of human hearing, provide an atypical case of soundre!uencies above /012', the effects of diffraction and thus sphericity, tend tong in a gradual progression to a pencil3like beam. This tendency occurs due to the range of motion within each atom or molecule, resulting in insufficient energy to

n. 2owever, sphericity begins to return at very high sound pressure levels, for0 d5 and above because there is sufficient sonic energy to cause multiple collisions.

f Light

ectromagnetism of a particular range of fre!uencies and although the preciseomagnetism is not known, propose that it is the result of the excitation of staticrm of energy inherent in the force fields of all atoms. )hen the force fields of

ules collide, there is a transfer of their periodicitiesdefined as the phonon or as

s the creation of electromagnetism. )hen real collisions occur between atoms orpposed to elastic collisions7 there must be a release of electromagnetic energy,fied as the photon or as light. The reason the electromagnetism is of sinusoidal law,s that each pair of colliding force fields are themselves vibrating sinusoidally due tonergy state of the atoms or molecules. The magnetic energy radiated is, thus,

he periodic vibrations of the atoms or molecules.

of electromagnetism resulting from colliding force fields is not only a function of thegy states of the atoms or molecules but also of the velocity of the collisions.y atomic collisions in which the energy states of the atoms or molecules 6coupledities7 are too low to create visible light will create infra red light and at even loweradio fre!uencies. 8ight created by atomic collisions in which the energy states arewill create 93ray and gamma ray electromagnetism.

ns between atoms or molecules result in spherical propagation ofm. The reason for the sphericity, is similar to that of sound, where every collision

g effect 6diffraction7 on nearby atoms or molecules. n the case of electromagnetism,are reactions to the main direction of thrust, causing electromagnetism to travel inection. n summary, spherical electromagnetism is the result of diffractive and

of atomic collisions.



tion of Electromagnetic Energy Components (SPEEC)

xpand at approximately ;00 miles an hour. Theoretically, this expansion generates

ng electromagnetic sphere that rushes away at %00,000 kilometres per second. se, it is proposed that the fre!uencies of electromagnetism created by sound arenfra3red and radio fre!uency spectrum, depending upon the initial sound pressure.ensity sounds will likely generate infra3red energy and low intensity sounds willow levels of radio fre!uency radiation. s proposed above, predict that the

e emissions will be a function of the !uiescent energy states of the atoms orell as their collision velocity.

ergy in the sonic bubble falls off rapidly with distance 6sound outdoors typicallyle7, the electromagnetic sphere is not significantly attenuated by clear air. The sphere travels relatively unimpeded through the atmosphere to outer space wheremples of starlight show us that it will travel virtually forever unless it meets dense

rapidly decreases as a result of the initial energy in the sonic bubble beinga greater and greater surface area as it expands. The sonic bubble can only

ostling of air molecules, which cause friction at the atomic level. s we have seen,is friction creates electromagnetic energy. Sound pressure also decreases becauseof heat 6electromagnetism in the infra3red<radio spectrum spectrum7 results from

Thus, sound energy dissipates, in part, due to its conversion to electromagnetism.ere are two component fre!uencies of oscillation in the sound3generated sphere. The first is the fre!uency of light created by the collisions. s we haveation is likely modulated by the inherent sound periodicities of the colliding atoms oreffect is similar to amplitude3modulated radio transmissions, although the S*""#a far higher =carrier= fre!uency.

*""# theory predicts that sound always has an electromagnetic 6light7 component.fre!uencies of these components are either in the radio spectrum or in the infrared

here the sound pressure levels are extremely high. n such cases, sound wouldght.

d

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the physics of sound.doc

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