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The double-slit experiment explains the nature in which we've observed light acting as both particle and wave. By conventional science doing both simultaneously is impossible but that's exactly what happens. But really we all know we call particles of light photons and I'm aware that they are emitted from within the atom where a dissipation of energy can be observed without any fluctuations in mass. But my question still stands: where does it come from elctrons, protons, neutrons, quarks, neutrinos. And what exactly is a photon, when the double-slit experiment shows how a single photon shot through a single hole produces wave patterns on a second hole when the second hole is not the the trajectory of the fired photon. More weird is how the photon produces itself on a phtographic slate in its rightful position. First it's a particle, then a wave, and then a particle again. Apparently light doesn't follow the laws of conservation of mass and energy.

2006-07-24 22:54:25 · 5 answers · asked by trblfor2 1 in Science & Mathematics Physics

5 answers

E=MC². Energy IS matter.

Also, the double slit experiment is a typical interferometry experiment. In that experiment, light acts like a wave. Not like particles.

Now, light comes from atoms, yes : some changes in atomic states dissipates energy in the form of electromagnetic wave (ie : light). The photons are only a representation of that energy (since e=mc², you're allowed to represent it with a particle). BUT, all experiments using light can be explained with only the "wave" attitude of light.
You can only represent light as particles when the distances in your experiment are a lot larger than light's wavelength. But even then, you can still make all the calculations as if light was still a wave (because it is)
For example, if you used 2 slits of 1 meter width, then light would ACT like particles (easier to calculate), but it's only an approximation, and you'll see diffraction happen close to the edges of your "slits" : light therefore acts like a wave even then.

It's like drawing a very small line on a piece of paper (light = wave), if you get far away from it, it will end up looking like a dot(light = particle)...
but if you suppose it's still a small line even if it looks like a dot, it's still coherent with what you see.

2006-07-24 22:59:53 · answer #1 · answered by Anonymous · 0 0

A photon is released from an atom when an electron drops into a lower shell. Conversely, when an atom gains energy, an electron jumps to a higher shell.

Because a photon is energy, and energy is equivalent with mass, the atom does indeed lose mass when a photon is released.

Warning: when anyone tries to explain to you how light can be both a particle and a wave, take it with a grain of salt. The explanations you are going to get, here or in a physics class, are just fancy ways of saying that nobody really knows. So don't feel stupid if you don't understand the explanations. The particle/wave duality is a paradox that cannot be explained or understood in the Standard Model of physics. That doesn't mean there is no answer, of course. It means the duality can only be explained in a modified paradigm of physical reality, which is currently not available.

You asked where a photon comes from. Normally, from an electron dropping to a lower shell, but this is an incomplete answer. If an object falls onto the surface of a planet at great velocity, the collision will produce sound, heat, deformations, and LIGHT. Where does the light come from? From the kinetic energy the object gained as it fell through the gravitational field. Likewise, if you send any particle through an acceletron, and smash it into another particle, photons will fly off. Electrons do not have to be involved. Apparently any kind of energy can be converted into photons. It has been suggested, in fact (though I don't know if I agree with it) that the entire universe could be reduced to nothing but photons.

The long and short of it is that your question is a good one, but it is the kind of question that physicists stop asking at some point in their education. After that they just shrug and say, "That's just the way it is."

2006-07-24 23:55:20 · answer #2 · answered by stanheidrich 2 · 0 0

Man-o-man u did not understand light at all...There isn't anything and i MEAN ANYTHING in this living world that doesn't follow the conservation of energy...Light has various theories of approach and i'm sure u don't know all of them...
1)Corpuscular theory(particle theory)
2)Wave theory
3)Rectilinear theory
4)Quantum theory
Light is a particle proof: Photoelectric effect
light has wave nature proof: Refraction,Diffraction,Interfearence.
Light travels in a straight path proof: Pin hole camera.
Light is composed of Quantum proof: Quantisation of energy.
Light is a radiation that is an outcome of conversation of energy from one form to another...and there are more explanations to follow.. "LIGHT IS NOT VISIBLE BUT MAKES OTHER OBJECTS
VISIBLE WHEN IT STRIKES THEM"

2006-07-25 03:58:20 · answer #3 · answered by Wolverine 3 · 0 0

youthful's double slit test exchange into traditionally the 1st test which wide-spread the interference development effectively. It provides a exceedingly observable development and helped in proving the wave nature of sunshine. A single slit does not supply upward thrust to interference. thought of interference exchange into first progressed for double slit and then prolonged to distinctive slits which helped in explaining diffraction varieties.

2016-10-08 07:19:18 · answer #4 · answered by ? 4 · 0 0

photons are emitted when electrons go from higher energy levels to a lower level. That is the definition.This energy is converted to light energy as seen on spectrometers.

2006-07-24 23:01:31 · answer #5 · answered by Danushka B 2 · 0 0

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