what is the science behind how and why the xylophone works.?
406440
The shape and suspension of the sounding bars are important, as are the dimensions of the resonators, if used. The bars are on soft supports about 1/4 to 1/5 of the way from each end. These locations are the nodes (points where no translational motion occurs) of the fundamental vibration mode of the bar. Professional xylophones use undercut bars which tailor the higher harmonics to a pleasing relationship with the fundamental. The first harmonic is an octave plus a fifth above (3 times the frequency of) the fundamental. The resonator is typically a closed tube with the closed (bottom) end located 1/4 wavelength below the sounding bar. (See ref.)
280308
u can get answer at www.howstuffworks.com\nok, if u get yr answer, then let me know,if don't get it then also let me know.
42153
To explain this, I would have to use many words, so here's a website to sum it up for you:\nhttp://electronics.howstuffworks.com/speaker.htm
546094
Acoustics is the science that deals with sound.
442351
It's spelled piezo.\n\nA material which exhibits the piezo-electric effect produces a voltage across one axis when struck or flexed in another axis.  \n\nIn gas stove and barbecue lighters and the pens which you speak of the resultant voltage is stepped up via a transfomer.\n\nThe same effect is used in "crystal" microphones and was used in crystal pick-up cartridges.
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Vibration of strings.\n\nOn an acoustic guitar, the body of the guitar is built so that it acts as a resonating chamber to greatly amplify the sound of the strings.\n\nOn an electric guitar, the pickups utilize a magnet with a coil around it. The vibrating strings interfere with the magnetic flux, and the coil picks this up as a small electrical current analogous to the vibrations. The current is then sent to an amplifier which amplifies this sound and sends that to a speaker, which reproduces the sound at a much greater sound pressure level.\n\nSome guitars, both electric and acoustic, as well as amplified violins and other stringed instruments utilize a piezo-electret element, which changes the vibrations into varying pressures, which then turn into electrical impulses, get amplied, etc. as above.\n\nThe length, diameter, composition and tightness of the string determines its pitch. The standard tuning for a guitar is (from lowest to highest strings) E, A, D, G, B, E.\n\nYou'll then note that each string can then be increased in pitch by 1/2 step for every fret you raise it from the open position.\n\nHope this helps.
356195
You might find a more accurate answer in an acoustic book, but basically works the same as a speaker, it has some inductors around a magnet that makes a membrane move rapidly making some pressure in the air making the sound.
204729
ok. here is one "HYPOTHESIS OF SOUND"!\n\nLet me know if you want another one! I got plenty.\n\nlol
628621
It is also called as "Directional Sound".\n\nYes, I've heard about it... Had even done a little study paper on it. If you need more info, send me an email.
997346
See this all depends.... if this were in the philosophy section, then it could be debatable.  But alas- it's in the botany section, so yes- it does make a sound.  Friction is created as it falls through the air and hits the ground, and that friction causes soundwaves.  Whether someone is there or not is irrelevant.  Humans can only pick up on a certain range of decibels anyways.  That doesn't mean just because we can't hear it, it doens't make a sound.  It just means that we can't hear it.  People need to get unstuck from themselves and think outside the human box.  "If humans can't.... must not be possible."  Meh.
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Electricity. It's everywhere. It's in your house, in the computer on which you are reading this, in the air, in your body, blah blah blah. You get the point. It also plays an important integral part of sound systems. From the microphone to the loudspeaker, everything is electrical, and you need to know a few things about it.\n\n\nANYONE FOR FROGS' LEGS?\n\nAn Italian scientist named Alessandro Volta did experiments with electric charge back in the 1800s; he managed to make dead frogs (yes, frogs) "move" by using them as part of an electrical circuit, and is credited with providing us with a lot of information about electric potential. The volt was thus born. Voltage is defined as the electric charge between two points. In household terms, voltage is akin to water pressure available to do work. It can't do any work until a circuit (the plumbing and a water tap) is complete so that current (the amount of water) can flow. In engineering terms, voltage is the potential energy of a bunch of electrons. Current, measured in Amperes, is the flow of electric charge; we can say that current is the rate of flow of electrons, but technically it is the opposite flow that we call current-- as electrons move in one direction, holes are left behind, and appear to flow in the opposite direction. We should also remember from our physics classes that there is a fundamental equation used in electricity: Ohm's Law.\n\n\nOHM SWEET OHM\n\nOhm's Law is the mathematical relationship between voltage, current and resistance. It is named after George Ohm, its founder. Ohm's Law states that the current in a conductor is directly proportional to the voltage across it, and inversely proprtional to its resistance. In simpler terms, the law states that more voltage will produce more current if resistance stays the same, but higher resistance will cause the current to decrease if the voltage stays the same. In our household plumbing example, we can say that Ohm's Law dictates that more water pressure will produce more output if the diameter of the pipe stays the same, but a smaller-diameter pipe will cause the output to decrease if the water pressure stays the same.\n\nWith these three basic components, we have electricity. Current is "drawn" from a power supply due to the presence of a voltage placed across a load, or resistance. For instance, a typical electrical outlet has 120 volt potential (pressure- it has the capacity to give you 120 volts), but nothing is connected. If you put some load across its terminals, like a lightbulb or steam iron, you then have a complete circuit in which electrical current can flow. As we said before, a higher resistance will yield less current than low resistance. A direct short will cause a very large flow of current, because there is no resistance. If the supply is capable of delivering enough current, it is likely that the wire will eventually heat up and melt. This is why circuit-breakers and fuses are used. They limit current flow by opening (as opposed to shorting) a circuit before current flow becomes too large-- a 15A circuit-breaker will trip when the loads connected to that circuit try to pull more than 15A of current.\n\nMakes sense, right? Good. Ohm's Law is represented as the rate of flow of electrons, and voltage is represented as the electric charge between two points.\n\nOhm's Law:V = I x R, where V = Voltage, I = Current, and R = Resistance. \n\nHELL'S BELLS\n\nElectricity appears in two forms: alternating current (AC) and direct current (DC). Direct current does not change directions-- the electron flow is always from the negative pole to the positive pole-- although as we mentioned before, the electrons themselves don't really "move," it's the holes that are created that "move." Direct current is almost always what is used inside of electronic devices to power the various internal components, but it is a harmful thi
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The xylophone was first introduced to the European orchestra in the late 19th century, by Charles Camille in a piece called 'danse macbre' in 1874.\n\nHope that helps!
564448
well actually sound is a series of vibrations and rarefractions, so when it is passed through the air the vibration is passing through the air molecules, and depending on the thickness or thinness of the air,the sound will go a further distance, also note that how loud the sound is must be taken into account. sound is not simply "absorbed" into the air, it is just the amount of strength the rarefraction and vibration is, now when there is wind, you have to take into account that sound is like an object, it will have wind resistance, or in a way. newtons second law i believe states, every force excerted onto another will  excert force equally or more back upon that object. so it is bassically just sound dying out because the vibration has no longer the power to be carried through the air.
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The 'How Stuff Works' website has a really good explanation.  You can find it at http://home.howstuffworks.com/question420.htm
1056075
it does make sound!!!!........ how stupid iz that \nWt a question >>>>> so weird !!!
419821
must be some kind of a transducer. it could also be a laser as i am not sure whether it is sound or light waves. i think it will use a laser and a sensor to detect the reflaction and hence how near it is to an object.
68390
Myoelastic-aerodynamic Theory\nEarly voice researchers in the 1950's and 1960's explained vocal fold oscillation with the myoelastic-aerodynamic theory. According to these theories, Bernoulli forces (negative pressure) cause the vocal folds to be sucked together, creating a closed airspace below the glottis. Continued air pressure from the lungs builds up underneath the closed folds. Once this pressure becomes high enough, the folds are blown outward, thus opening the glottis and releasing a single 'puff' of air. \n\nThe lateral movement of the vocal folds continues until the natural elasticity of the tissue takes over, and the vocal folds move back to their original, closed position. Then, the cycle begins again. Each cycle produces a single small puff of air; the sound of the human voice is nothing more than tens or hundreds of these small puffs of air being released every second and filtered by the vocal tract. \n\nLet's further examine the myoelastic-aerodynamic theory. Myo- means muscle; the vocal folds, after all, are mostly comprised of muscle tissue. The -elastic suffix serves to remind us that the vocal fold is elastic and that we have active control over its elastic properties. Aerodynamic means that the theory deals with the motion of air and other gaseous fluids, and with the forces active on bodies in motion (such as the vocal folds) in relation to such fluids.