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Thread: Help...again

  1. #1 Help...again 
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    Do electromagnetic waves literally have electric fields and magnetic fields OR is it just something to call them?


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  3. #2  
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    yes. EMR has both electrical and magnetic fields, generated perpendicular to each other.

    some reading: Electromagnetic radiation - Wikipedia, the free encyclopedia

    interesting EMR animation: Electromagnetic Wave Physics 30 Unit 3 - YouTube


    Last edited by Chucknorium; April 4th, 2014 at 10:50 PM.
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  4. #3  
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    Ah okay thanks.
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    Forum Professor Zwolver's Avatar
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    Some years ago, they actually were calculated separately. This was not too long ago actually. But this has since then changed. There is no real output difference, it's only generated differently.
    Growing up, i marveled at star-trek's science, and ignored the perfect society. Now, i try to ignore their science, and marvel at the society.

    Imagine, being able to create matter out of thin air, and not coming up with using drones for boarding hostile ships. Or using drones to defend your own ship. Heck, using drones to block energy attacks, counterattack or for surveillance. Unless, of course, they are nano-machines in your blood, which is a billion times more complex..
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  6. #5  
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    So let me get this straight : Electromagnetic radiation is caused by accelerated(decelerated) electrons?
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  7. #6  
    Moderator Moderator Markus Hanke's Avatar
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    Quote Originally Posted by molecool View Post
    So let me get this straight : Electromagnetic radiation is caused by accelerated(decelerated) electrons?
    It is caused by accelerated charges in general - electrons are one example of this.
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  8. #7  
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    Ok, so accelerated or decelerated? Or both?
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  9. #8  
    Moderator Moderator Markus Hanke's Avatar
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    Quote Originally Posted by molecool View Post
    Ok, so accelerated or decelerated? Or both?
    The term "acceleration" refers to a change in velocity, and that can be both a positive or a negative value. Such a thing as "deceleration" does not really exist as a separate concept, it is just a figure of speech.

    EM radiation results when a charge changes it state of motion, in whatever way
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  10. #9  
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    Ok thanks again.
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