# Electromagnetic Waves and different energy manifestations

GuillemVS
When an object is hot its particles are moving faster than when is cold, right?

I've searched that particles are electrons and protons, so it means that if we warm a object the electrons will be moving or even accelerating. Every charge accelerated creates Electromagnetic Waves (or light), right? So it means that when a object receives energy, the electrons become excited, and in it's energy release they go down from excitement, and that becomes acceleration of electron that eventually becomes an Electromagnetic Wave, right?

So basically we could define a mirror by saying that all the light that comes excites de electrons of the mirror and its dexcitement (is that a word?) creates acceleration of the electron so it's creating the electromagnetic waves back.

Now here is my question (apart from the right?s): What defines the wavelength (or frequency) of the electromagnetic wave? Is it the acceleration itself? Or it's a fixed acceleration in which it comes back to dexcited (word?), so then it would be defined by the amount of energy that it has in its excitment? Is every equal wavelength electromagnetic wave at the same level of energy?

Another thing: antennas receive electromagnetic waves as electricty, how is this excitement transform into electricity? if that's how it happens?
Like I believe that the electrons get excited by the receive of enegy, right?, then how is tranformed into electricity? If the electrons instead of dexciting they just move into another place (because that's electricty, right?, the movement of electrons)?

Apart from the theory, antennas receive EM waves as electricity, so: what defines the voltage of the electricity and what EM wave (type of frequency) we receive? I saw that monopoles antennas receive frequencies depending on their length (as dipole but x2) using that 468 feet / x Mhz. I guess that is to fit the wavelength in the antenna? If it's that, what about all the others wavelengths that are smaller and fit in? The only thing that's left of discard is that the amount of volts received define the wavelength depending on your antenna length. More antenna length less volts for the same wavelength, is that true?

I mean, I guess if you haven't destroyed all your vains and nails already for how I have destroyed science and physics with my theories, it would be great if you could tell me where I am wrong (I guess it's faster to tell me where I am right xD), I need answers.

P.S: I don't know what prefix should I use for this, so I put the intermediate one. But I guess this could be too in Basic.

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Gold Member
Now here is my question (apart from the right?s): What defines the wavelength (or frequency) of the electromagnetic wave acceleration? Is it the acceleration itself? Or it's a fixed acceleration in which it comes back to dexcited (word?), so then it would be defined by the amount of energy that it has in its excitment? Is every equal wavelength electromagnetic wave at the same level of energy?
I don't know what you mean by electromagnetic wave acceleration, but here's the basics:

Light is electromagnetic radiation (or electromagnetic waves) that is visible to our eyes. Furthermore, electromagnetic radiation fundamentally consists of the quanta of the electromagnetic field called photons.

This is the basic formula which describes the relation between energy and frequency (and thus different colors of light):
http://hyperphysics.phy-astr.gsu.edu/hbase/mod2.html#c3

Planck's Constant - Sixty Symbols

and here's a brief demonstration of the energy levels of hydrogen (the hydrogen spectrum).

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• davenn
GuillemVS
I don't know what you mean by electromagnetic wave acceleration, but here's the basics:

Light is electromagnetic radiation (or electromagnetic waves) that is visible to our eyes. Furthermore, electromagnetic radiation fundamentally consists of the quanta of the electromagnetic field called photons.

This is the basic formula which desribes the relation between energy and frequency:
http://hyperphysics.phy-astr.gsu.edu/hbase/mod2.html#c3

Here's a Sixty Symbols video about Planck's constant:

Planck's Constant - Sixty Symbols

and here's a brief demonstration of the energy levels of hydrogen (the hydrogen spectrum):

Oops remove the acceleration part from that. And add the context of aceleration of particle with charge.

Gold Member
Every charge accelerated creates Electromagnetic Waves (or light), right?
Yes. But at the atomic level, things are different. The electron in the ground state in a hydrogen atom does not emit electromagnetic radiation. If it did, the electron would lose energy and spiral into the nucleus. But it does not; the hydrogen atom, along with many other types of atoms, is stable. The electrons in atoms are not orbiting the nuclei in a classical way. And thus we here have quantum mechanics instead of classical physics . Atoms emit radiation when the electrons go from a higher, excited energy state to a lower. And they can absorb incoming radiation and go from a lower to a higher excited state.

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Yes. But at the atomic level, things are different. The electron in the ground state in a hydrogen atom does not emit electromagnetic radiation. If it did, the electron would lose energy and spiral into the nucleus. But it does not; the hydrogen atom, along with many other types of atoms, is stable. The electrons in atoms are not orbiting the nuclei in a classical way. And thus we here have quantum mechanics instead of classical physics . Atoms emit radiation when the electrons go from a higher, excited energy state to a lower. And they can absorb incoming radiation and go from a lower to a higher excited state.
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