if they are electromagnetic\nthen how our ears can hear them?
213110
The previous poster is right.  It's particles in the air "vibrating" (caused by pressure differences) that enables you to hear.  That is why in space, which is a vaccuum, you cannot hear anything.  There is nothing to transmit those pressure differences to your ear.
248570
To hear a noise you need to have something for the noise to propagate through. The sun and Mercury exist in the vacuum of space. There is nothing in a vacuum, hence no sound can travel. So no, we can't hear the noise the sun or mercury make. Sound won't travel through the vacuum of space.\n\nBut the sun certainly makes a noise, it is after all a massive fusion reactor. If you could stand within the atmosphere of the sun without being vaporised or crushed you would be deafened by the noise it makes.\n\nBut once you left the Sun's atmosphere the noise would stop. All of space is a vacuum and totally silent.
56095
Electromagnetic waves??? thats something ive never heard of before. how about posting the article or the website online? \n\ni do know that electricity can be "transmitted" by magnetism, via electromagnetic induction. according to faraday's law, a changing rate of magnetic flux linkage induces an electromotive force, and thus induces current on a conductor. check out faraday's law at wikipedia for more info dude...
290665
someone will come along and answer this better than me! but i think its something to do with the fine hair things in our ears (forget what there called) they get bent down during loud nusic, they try to get back to normal and create this sound while trying to get back to normal.(am i making any sense here) my ears are ringing now as i have just come in from a club!
63125
All the waves you have mentioned, are electomagnetic waves. They differ in their frequency, this means, their energy. Therefore, you cannot have a radio wave the same frequency as a visible wave, its one or the other, the frequency will indicate if its radio, infrared, visible and so on. The differnt frequencies gives them their particular properties. All of them travel at the same speed.
97836
Could you mean phononics?  See the link.
446126
Photons are particles of electro-magnetic energy\n\nParticles and waves can be reflected\n(both waves and particles bounce off a wall)\n\nBoth particles and waves that carry energy can cause damage.\n\nBoth particles and waves can be refracted --> http://micro.magnet.fsu.edu/primer/java/particleorwave/refraction/index.html
159830
Good question. Not hearing; sight. They seem to be hearing movement, but birds go by sight. I thought the same thing.
645799
C\n\nBecause soundwaves are not really particles. They use any kind of medium (solids, liquids, gases) to propagate unlike light which is actual particles of energy which is why light can travel through a vacuum (sun to earth) but Sound cannot
147899
WELL..if u hav eyes n ears....n both functioning properly...n a computer or tv n a cd or a cassete and a cd player or a dvd player....hope u'll find no probs.........:)
500733
They are called Hyperbolic microphones. They are used to pick up sound from a surrounding environment, not just a single person speaking.
44924
Black holes make White noise ... in all seriousness though, it's called "Black hole music" ...\n\nAstronomers were not surprised to find the supermassive black hole making a strong sub-bass sound. Though these greatest known matter sinks are by nature dark and invisible, they create bright and chaotic environments in which many forms of radiation -- from radio waves to visible light to X-rays -- have been recorded. These electromagnetic waves all travel at the speed of light.\n\nSound waves are similar, but they travel far more slowly and are more physical in nature. Sound you hear, for example, can be produced by the visible compression and expansion of a stereo speaker. The waves physically compress the stuff through which they move, be it air, water, or hot interstellar gas.\n\nOther studies have shown that the riotous activity around black holes -- where gas is accelerated to nearly light-speed -- produces many notes that are, all together, much like music. Collectively, the cosmos produce, scientists believe, a cacophonic symphony of inaudible tunes.\n\nMusical production appears to be ubiquitous in Nature. Scientists often call it flicker noise, and it has also been detected in the X-ray outputs of magnetic fields within our solar system. Even Earth hums its own tune. Musical analogies are found in everything from seascapes to brainwaves.
413902
Yes, they do....sonar, for example.\n\nThe interface travel between water/air scatters the waves.  You'd probably have to keep the antenna under water.
212104
light cannot directly produce sound, but audible sound can be produced as a result of the rapid heating and expansion of the surrounding air of a powerful light beam.\nan example of this is thunder and lightning.
376012
The main concept to understand is that of a carrier wave.  The radio wave is that.  A radio wave is electro-magnetic radiation, which, unlike other waves, is not a vibration within a medium, like sound waves for example, which are the propagation of alternating high and low pressure within the air, or other fluid media.  Electro-magnetic waves are a self propagating electro-magnetic effect which can travel even in a vacuum.  Electro-magnetic radiation is a pulsing stream of energy where the pulses are at a constant frequency.  What we perceive as different phenomenon are in fact the same electromagnetic radiation but at different frequencies.  Microwaves, Radio, Ultra-violet, Visible Light, and Infra-red, are all electro-magnetic radiation moving down the scale from high to low frequency.\n\nThe radio transmitter sends out radio waves at a specific frequency or band of frequencies.  The aerial of the receiver develops tiny electric currents in it as the radio wave flows past it.  These are pulsing currents at the same frequency as the radio wave, but these pulses are not in themselves the content of speech or music.  This content, or signal, is carried in the wave, hence the concept of the carrier wave.\n\nIt is easier to understand Amplitude Modulation or AM radio so I will restrict myself to that.  If you imagine a radio wave as a very long string with the pulses like beads on it, all spaced at precise intervals, then imagine that the beads slowly getter bigger and smaller along its length.  Each bead is a packet of energy in the wave and all occur at the same frequency, but where the beads get bigger there is more energy in the packet.  It only takes a little more imagination now to see how the pattern of a sound wave can be represented by the bulging out of the beads, and their getting smaller.  This is called the amplitude.\n\nLooking at it in practical terms, at the transmitter end sound is converted in the microphone into a corresponding pattern of changes in the current flowing through the microphone.  That is your signal.  That signal which is at a low electrical power, is used to create the same pattern but in a circuit of much higher electrical power - that is what an amplifier does.  The device used to transfer the pattern is called a transistor, which uses the low powered circuit to control the flow in the high powered circuit.\n\nThe amplified signal is fed to the transmitter aerial, so now that pattern of electrical energy, identical to the pattern of the sound picked up by the microphone, comes out of the aerial as radio waves, with the pattern held in the varying amplitude of the radio wave.\n\nNow comes a trick to follow.  If there are thousands of transmitters all radiating radio waves all over the place, how come your radio only picks up the one signal.  This is where the tuner comes in.  The principle of radio tuning depends on the opposite properties of coils and capacitors.  I don't know if you know what these are, but it doesn't matter if you don't.  Both of these devices have a special kind of resistance to electricity known as impedance.  Impedance only operates where the current is varying.  The voltages and currents in our radio Ariel will be varying at exactly the same frequency as each radio wave it is exposed to, so if we pass that current through either a coil or a capacitor there will be an impedance in the circuit.  Now the impedance of the coil increases as the frequency gets higher and the impedance of the capacitor gets higher as the frequency gets lower.  An AM tuning circuit simply passes the signal current through both a coil and a capacitor at the same time, and the capacitor is a mechanically variable one, so by turning a knob you can increase or decrease the capacitance.  The trick here is that as the capacitance changes the circuit will show least impedance to a specific frequency compared with all the others, so provided the frequencies are not too close, as the law requ
148488
If everyone in the world was deaf, and the tree fell, it would still make a sound, but we just can't hear. \n\nA dog can hear things humans can't, but it doesn't mean those sounds don't exist.
12645
lol thats a funny question i think the reason they make those noises is because there are air pockets in them and when the air pocket bust it goes snap crackle pop lol