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Thread: Waves of Light and Sound

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    Owl
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    Default Waves of Light and Sound

    Could sound and light waves cancel each other out given the right conditions.

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    Default Re: Waves of Light and Sound

    Quote Originally Posted by Owl View Post
    Could sound and light waves cancel each other out given the right conditions.
    Sound waves and light waves are different kinds of waves.
    Light is electromagnetic radiation which propagates in a manner like a wave and also behaves in similar manner to particles.
    EM radiation needs no medium other than SpaceTime itself.
    Sound waves are a vibration moving through a medium, such as air, sheetrock, stone, water and the like.
    The waves of sound will not interact with waves of light under any conditions.

    Now, light (photons) can interact with a medium that a sound wave is traveling through. The difference is negligible and the human ear would never notice the difference... So while a light wave won't interact with a sound wave, the pitch of the sound can be changed (ever so slightly) if photons excite the molecules in the medium.
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    “Science needs the light of free expression to flourish. It depends on the fearless questioning of authority, and the open exchange of ideas.” ― Neil deGrasse Tyson

    "When photons interact with electrons, they are interacting with the charge around a "bare" mass, and thus the interaction is electromagnetic, hence light. This light slows the photon down." - BuleriaChk

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    Default Re: Waves of Light and Sound

    Quote Originally Posted by Neverfly View Post
    Sound waves and light waves are different kinds of waves.
    Light is electromagnetic radiation which propagates in a manner like a wave and also behaves in similar manner to particles.
    EM radiation needs no medium other than SpaceTime itself.
    Sound waves are a vibration moving through a medium, such as air, sheetrock, stone, water and the like.
    The waves of sound will not interact with waves of light under any conditions.

    Now, light (photons) can interact with a medium that a sound wave is traveling through. The difference is negligible and the human ear would never notice the difference... So while a light wave won't interact with a sound wave, the pitch of the sound can be changed (ever so slightly) if photons excite the molecules in the medium.
    What about vibrating light? A hot coal spit out of a fire, sizzling in the air. The heat caused both the glowing as well as the energy required for the chemical reaction to produce the sound energy.
    Last edited by KickLaBuka; 05-29-2016 at 03:19 PM.

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    Default Re: Waves of Light and Sound

    Quote Originally Posted by KickLaBuka View Post
    What about vibrating light? A hot coal spit out of a fire, sizzling in the air. The heat caused both the glowing as well as the energy required for the chemical reaction to produce the sound energy.
    The light emitted is not the same action as the sound emitted. Photons will not vibrate. The vibration of the physical object as heated gasses escape the coal results in the popping sound. This can be made without emitting light.
    Similarly, you can heat an object to emit light, but no sound.
    --Inter Arma Enim Silent Leges--
    “Science needs the light of free expression to flourish. It depends on the fearless questioning of authority, and the open exchange of ideas.” ― Neil deGrasse Tyson

    "When photons interact with electrons, they are interacting with the charge around a "bare" mass, and thus the interaction is electromagnetic, hence light. This light slows the photon down." - BuleriaChk

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    Default Re: Waves of Light and Sound

    Quote Originally Posted by Neverfly View Post
    The light emitted is not the same action as the sound emitted. Photons will not vibrate. The vibration of the physical object as heated gasses escape the coal results in the popping sound. This can be made without emitting light.
    Similarly, you can heat an object to emit light, but no sound.
    I get that the energy could be either, but that doesn't mean one or the other. The same energy in a firework is responsible for both the light and sound. It doesn't make sense for seperate energy sources in the same chemical reaction.

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    Default Re: Waves of Light and Sound

    Quote Originally Posted by KickLaBuka View Post
    I get that the energy could be either, but that doesn't mean one or the other. The same energy in a firework is responsible for both the light and sound. It doesn't make sense for seperate energy sources in the same chemical reaction.
    Not separate sources, separate results.
    --Inter Arma Enim Silent Leges--
    “Science needs the light of free expression to flourish. It depends on the fearless questioning of authority, and the open exchange of ideas.” ― Neil deGrasse Tyson

    "When photons interact with electrons, they are interacting with the charge around a "bare" mass, and thus the interaction is electromagnetic, hence light. This light slows the photon down." - BuleriaChk

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    Default Re: Waves of Light and Sound

    Quote Originally Posted by Neverfly View Post
    Not separate sources, separate results.
    put a home theatre speaker facing up, and drop some pebbles on the cone; then shine a light and pump up the bass. The electrons in the rocks' atomic structure bounce with the music, while orbiting each nucleus and between atoms in the rocks' structure. Are you telling me the electrons are doing seperate things? They're doing the combined result of sound and light.

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    Default Re: Waves of Light and Sound

    Quote Originally Posted by KickLaBuka View Post
    put a home theatre speaker facing up, and drop some pebbles on the cone; then shine a light and pump up the bass. The electrons in the rocks' atomic structure bounce with the music, while orbiting each nucleus and between atoms in the rocks' structure. Are you telling me the electrons are doing seperate things? They're doing the combined result of sound and light.
    Works well with oil and water, too. Or... a plasticy fluid using corn starch but hey...
    No they aren't. They atomic lattice of the rock will vibrate and if you add enough energy, the electrons might vibrate. If you add photons (Light) individual electrons will bump up into a higher energy state-- But only to immediately emit a photon and drop back down one energy state. That interaction is separate from the speaker.
    You can get the same result as far as how much the pebbles bounce without shining hardly any light on the experiment (Get some N.O.D.'s to view it).
    --Inter Arma Enim Silent Leges--
    “Science needs the light of free expression to flourish. It depends on the fearless questioning of authority, and the open exchange of ideas.” ― Neil deGrasse Tyson

    "When photons interact with electrons, they are interacting with the charge around a "bare" mass, and thus the interaction is electromagnetic, hence light. This light slows the photon down." - BuleriaChk

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    Default Re: Waves of Light and Sound

    Quote Originally Posted by Neverfly View Post
    If you add photons (Light) individual electrons will bump up into a higher energy state-- But only to immediately emit a photon and drop back down one energy state. That interaction is separate from the speaker.
    .
    Height (location) of the emission is combined dependent on light and sound. It's ignored because it is barely relevant due to the differences in speeds. Technically it is the motion of the speaker, not the propagation of the sound that is comparable to the light emission. Thanks for the thought exercise. It's something to think about.

    How do radio transmissions (an electromagnetic light), get turned into music?

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    Default Re: Waves of Light and Sound

    Quote Originally Posted by KickLaBuka View Post
    Height (location) of the emission is combined dependent on light and sound.
    Why do you think light is involved?

    Quote Originally Posted by KickLaBuka View Post
    How do radio transmissions (an electromagnetic light), get turned into music?
    The changing frequencies are received and translated into an electical signal that matches the frequencies. That signal is then relayed to a servo or motor that pumps a diaphragm. That diaphragm vibrating is what makes the sound.
    --Inter Arma Enim Silent Leges--
    “Science needs the light of free expression to flourish. It depends on the fearless questioning of authority, and the open exchange of ideas.” ― Neil deGrasse Tyson

    "When photons interact with electrons, they are interacting with the charge around a "bare" mass, and thus the interaction is electromagnetic, hence light. This light slows the photon down." - BuleriaChk

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