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- Опубликовано: 1 июл 2015
- 125 - Photons
In this video Paul Andersen explains how light travels in photons which can be described as both particles and waves. Einstein showed that photons can be described as particles using the photoelectric effect to show that the energy of a photon is related to the frequency and Planck's constant. The quantized nature of light can be found in both spectral lines and the photoelectric effect.
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Music Attribution
Title: String Theory
Artist: Herman Jolly
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All of the images are licensed under creative commons and public domain licensing:
“Albert Einstein.” Wikipedia, the Free Encyclopedia, May 1, 2015. en.wikipedia.org/w/index.php?t....
“Electromagnetic Radiation.” Wikipedia, the Free Encyclopedia, May 2, 2015. en.wikipedia.org/w/index.php?t....
English: Colorful Spectrum simulationEspañol: Espectro de Colores de La Luz visibleEsperanto: Koloroj Videblaj中文（简体）: 软件模拟的可见光谱。中文（繁體）: 軟件模擬的可見光譜。, August 27, 2008. Digitally created by Deborah S Krolls, December 13, 2004. commons.wikimedia.org/wiki/Fil....
Esquembre, Lookang many thanks to Fu-Kwun Hwang and author of Easy Java Simulation = Francisco. English: Electromagnetic Waves Can Be Imagined as a Self-Propagating Transverse Oscillating Wave of Electric and Magnetic Fields. This Diagram Shows a Plane Linearly Polarized Wave Propagating from Left to Right. The Electric Field Is in a Vertical Plane and the Magnetic Field in a Horizontal Plane., October 5, 2011. Own work. commons.wikimedia.org/wiki/Fil....
“Gas-Filled Tube.” Wikipedia, the Free Encyclopedia, January 31, 2015. en.wikipedia.org/w/index.php?t....
Grobe, Hannes. English: Portable UV (ultraviolett) Lamp with UV-A and UV-B Light, August 8, 2011. Own work. commons.wikimedia.org/wiki/Fil....
Kurzon. English: A Simple Illustration of Bohr’s Model of the Atom, with an Electron Making Quantum Leaps., April 14, 2014. Own work. commons.wikimedia.org/wiki/Fil....
“Photon.” Wikipedia, the Free Encyclopedia, May 1, 2015. en.wikipedia.org/w/index.php?t....
Torindkflt. Demonstration of a Touch-Activated Table Lamp, December 23, 2007. Own work. commons.wikimedia.org/wiki/Fil....
Thanks mate, always appreciate your uploads, when ever I get a chance to watch. So much good info out there
His spectrum is wrong though. Red into infrared, microwave then Radio and Violet into Ultraviolet, X rays and Gamma. He's not the one to get information from. At least on this subject.
Take 2?
Looking over my notes, I came up with this new picture of a photon particle wave. Bit difficult to describe in words, but it is based on photons that can create positron electron pairs.
Photons are a series of particles like stepping stones. At each stop the photon shoots out a positron crest in one direction, and an electron trough in the other.
This LOOKS like a single complete wavelength.
But it really is a photon turning into an electron positron pair, each springing out of the photon in the opposite direction of the other.
So each wavelength is, photon in the node of the wave position, with a negative electron trough on one side and a positive positron crest on the other.
Further the node between two wavelengths may be where an electron trough meets a positron crest = annihilation.
This process would all be as quick as a quantum jump.
That's entirely wrong
Didn't even edit out the speaking error, respect
Great overview. Clear & concise
Thank you! You make a difficult topic pleasant to listen to, explained well, and increases the likelihood of understanding! ✌
Grate to be back!
I think it is important to differentiate between light vs energy. Light is our mental construct of the pulses of the nerves of the retina which are affected by photons. In other words light is our perception of photons via our eye as a sense organ.
Color is also part of this construct. Colors don't exist as a quality of the photon produced, it is our brains construct of the eye sense organ. If we studied photons as we do other energy particles which we don't have sense organs interacting or detecting them, we would have a better understanding of the existence around us.
But we do!
nicely explained
please don't stop making videos. D: thanks
So, when a electron moves it causes a variation of the electric field, thus creating a magnetic field. The interation of these two fields generates the photon.
And if this phenomenon generates a photon, them a photon can generate a electric field and a magnetic field in an object because of the physics symmetry. :)
Yes the electron movement creates a discrete amount of energy as an em wave which propagates away as they do. The “photon” is a quantum generation of an em wave.
Thank You for this.
Do you have UV and IR reversed in the EMR spectrum?
i was about to say that, glad you pointed out 5 years ago
At 1:38, Infrared and Ultraviolet are switched. Don't want that to confuse people.
So would you be able to use this to generate energy for use?
So increased intensity of the light (at a given frequency) simply means it's throwing off more photons?
Thanks for the video!
Light doesn't "travel" as photons. Photons are the amounts of energy that external systems exchange with an electromagnetic field. This does not mean that the field is made of photons.
He was trying to make it simple
@@lovead5418 There is, unfortunately, an awful lot of nonsense about this around and not just on the internet. Even my first QM teacher in university got this wrong. If you stick to what I wrote, then you will have far fewer problems with understanding quantum mechanics. If you are interested, that is. If all you want is simple and wrong, then "photons are little balls that go from A to B" will do.
@@schmetterling4477 oh I think I understand your point, thank you.
Butterfly can you recommend any videos, articles, books that get this right? I have the Feynmann Lectures but I know I don't have the attention span.
@@niamhheron5587 There is no fast and simple way into this, I am afraid. Feynman gave a bunch of talks about quantum electrodynamics that are on RUclips. They also exist as a small book called "QED - The Strange Theory of Light and Matter". What he describes in there is a layman's version of relativistic field theory, which starts with a mathematical construct called a path integral, which then leads in a fairly straight forward way to Feynman diagrams. That book is worth reading IMHO, even though Feynman still works in a semi-classical particle picture there.
Maybe the easiest way for a layman to understand QM is by mentioning the history of the core mistake in most presentations about it. In his 1905 paper on the photoelectric effect Einstein clearly understood that photons were quanta (small amounts) of energy. Unfortunately he mistakenly identified them with Newton's corpuscles in one sentence of the paper that assigns physical location properties to them. Einstein did not use that postulate even once in that paper. It stands completely on its own and is not supported by any experimental fact. I would call that sentence Einstein's actual biggest blunder. Interestingly enough it is the very same logical mistake that made 19th century physicists identify heat energy with a material carrier, a "Stoff", called the phlogiston. The phlogiston hypothesis was gone very quickly but the "quanta as atomistic particles of fields" mistake has been hanging around for over a century now.
From there the founders of QM quickly got to a trivial false dichotomy fallacy that described quanta as either particles or waves. That is, of course, complete nonsense. Dirac already noticed in the late 1920s that quanta are neither particles nor waves because they don't behave like either. They are a completely new type of phenomenon that has to be understood in its own right. Or, as Alan Adams from MIT says in his lectures on QM, 10^20 electrons don't form a wave, they form cheese. And that is exactly correct. "Collective phenomena of many quanta" aka "quantum fields" make all the wonderful matter based phenomena in the universe, be it rocks, superconductors, gouda or humans. So, forget the wave-particle duality BS. It's much more complicated than that.
From there it's only one more small step: you have to unlearn that quanta are somehow inalterable atomistic constituents of matter. There are plenty of experiments that show that they are neither inalterable nor are they atomistic parts of a whole. Quanta are the result of relativity forcing spacetime to split into a "local" reality that has a state that is always entangled with an unknowable state of the quantum field on the observer's light cone. Because we can never know all of the past and because we can never manipulate all of the future, there is always a local remnant of "uncertainty" in the here and now. And that is what leads to quantum mechanics.
Now, where can you find all of this made explicit? Not in a single book that I have ever seen. The modern relativistic bits and pieces are to be found in many textbooks on quantum field theory. The crumbs of historical errors that lead to a really poor teaching of quantum mechanics to this day you will have to collect piecemeal by reading the founder literature, starting with Einstein and then especially Heisenberg, I would say. But you will also have to know the phenomenology of atomic, nuclear and high energy physics from a modern perspective, because then you can see why the founders had certain ideas that simply do not stand up to modern experimental results... but then, nobody can expect Einstein to have foreseen the theoretical results of the 1960s and 1970s (gauge theory) or the accelerator data that were collected over the span of almost a century.
So, the short answer is... unless you are willing to read a lot, all of this will probably stay nebulous. Sorry. If I could have said all of the above with one sentence I would have.
i cant find the full playlist :S i wanna see all of the videos >.
discrete does not mean packet vs wave it means units of energy divisible by the plank constant with no partial charge.
In the spectrum diagram between video time 1:40 t0 2:06, the two words Infrared and Ultraviolet should be swapped. Thank you.
very good
2.05--- But the electric field is perpendicular to the direction of propagation. Yes, like water hyacinth are pushed away perpendicular to the direction of the moving boat. This slows the boat. Similarly, light slows in accordance with the optical density of the medium.
2.05 ---- the magnetic permeability contributes concentric deflection to the path of the light force particle along the sine transverse wave, which now twists levo or dextro rotary. Ray dial motion.
Yes. I have a question but I don't know how to ask it. Is there a change in the energy used as you increase your speed through space?
Is a photon wave packet, one peak and trough of a sinewave , or a series of peaks and troughs ?
Is a photon wave packet, a single sinusoidal wave, or two or more sinusoidal waves (i.e. a wave on a wave) ?
Curious...if you shine infrared light at a very strong intensity, won't you also get electrons emitted as well?
To relation photon topics problem,how about the metal material photon,etc:photodiode,LDR,phototransistor,maybe piezoelectric and trabducer electronic componen,how is so that if katode and anode to be shorted,???
Heinrich Hertz was first to observe the photoelectric effect in 1887.
J.J. Thomson proved it was the result of light pushing on electrons in 1897.
Max Planck proposed that electromagnetic energy could be emitted only in quantized form (E= hv) in 1900.
Albert Einstein gets the credit for other peoples work in 1921.
Einstein didn't build anything upon the already discovered photoelectric effect
Well, technically they wanted to give Einstein a Nobel but didn't dare to give it to him for general relativity because that would have violated Nobel's original will. It's an unfortunate side effect of the rules that they had to pick the photoelectric effect, instead.
What I don't understand is why there is a battery connected to the PhET simulator. If the UV source is knocking electrons loose, then current should be flowing. This means it would make more sense to connect an ammeter.
Excellent videos. But could you please teach Mr. Jolly how to TUNE HIS GUITAR?
Thank you
sir, UV and IR rays should be reversed
Yes, the first thing I saw.
Not easy to understand, but thank you for trying to explain
nice video and thanks for explanation. When sun emits em waves of different frequency why don''t they intefer with each other. How we are able to split it into different components.
We can only see Visible light, not other.
wave lenght is after how much time wave repeats itself
Bozeman. What is the length (in meters) of a photon ?
So if an electron loses a photon does that mean it'll drop down one electron shell and be closer to the nucleus?
does planks quanta and einstins photon are same sir ?
Max Planck told that energy is quantized, there are the smallest energy packets called quanta so Einstein explained that light is also a particle and the quanta of light are known as photons.
E photons = E matter * ( v photons ) ²
"v" is velocity, "E matter" is equal amount of matter and antimatter ("mirror matter") energy.
Bozeman Science It's still hard to wrap my head around light as electromagnetic radiation. At what point does a mirror stop reflecting it?
does the CRT in TV depends on photo electric effect ?
No.
Could the future be unfolding photon by photon with the mathematics of quantum mechanics represents the physics of ‘time’ itself as a physical process? This might sound mad, but the uncertainty of everyday life could be represented mathematically at the smallest scale by Heisenberg’s Uncertainty Principle ∆×∆pᵪ≥h/4π representing a potential sphere 4π of future uncertainty with the Planck's Constant ħ=h/2π being a constant of action in the geometrical process of creation that we see and feel as the passage of time.
Hey. From Nigeria. Would like to chat. Thanks.
you the best
please,Do a video about Einstein's field
Why does the light that we see seem reach us constantly rather than lamps?
Its like a shower head. Turn it down, you feel drops of water, turn it way up, it feels constant. Also, your eyes retain the image for a few milliseconds (and a really bright flash even longer), so everything is smoothed out, otherwise motion pictures would not feel continuous.
How did you managed to screw up the order of the EM spectrum? ..
Infrared is weaker and UV is stronger, not the opposite. I was questioning my sanity....
I believe the Electromagnetic radiation chart is wrong, isn't ultraviolet and infrared swapped?
Still have not fixed your incorrect diagram at 1:50 of x-ray to IR, should be x-ray, UV.
2 years later and he still hasn't
Royaleah For Wavelength it's :
Radio > Microwaves > IR > Visible > UV > X-RAY > Gamma
May be video is difficult to Edit
Light is like stool. Sometimes it's little lumps, sometimes it's waves.
wait .
"photons" are "electrons" ?
cant see a single "atom" but u can use an "electron" to describe a "photon" ( a "particle" of "light" ), that's not an "electron". ?
No, photons are energy. When a molecule is resonant with a photon, that is the molecule is opaque to a photon instead of the photon simply passing through the matter, the molecule either absorbs the photons energy or emits two photons of the same energy in the same direction as the original photon. When absorbed, either the molecule's nucleus with vibrate with additional energy if the energy matches equal to the photon (when its energy matches the vibrational energies) or an electron will jump to the next valence shell equal to the photons energy (when it matches that energy level). For energy levels which cause the electron to jump shells, they are commonly in the visible light range, so when the electron falls back to its original energy level and a photon is released, you can see the light.
2:15 Blue screen of death. Rebooting...
Great! This time I learned that one photon kicks off one electron to generate energy.
Cool! Then you have learned complete bullshit. ;-)
current increases till a specific frequency ,beyond that it starts decreasing . why? someone reply .. i tried this simulation ....
I never understand when scientist talk about waves, is it just how Particle moves? why they talk about waves like it is a common sense. I mean, wave of water are tons of water molecules moving together in a wave pattern, so light wave is the same with photon?
B Day good damn question
no
No, photons don't work like water molecules. A light wave can be made of a single photon.
Light is essentially a wave (a ripple in the electromagnetic field), but the wave can only carry off or transmit energy in integer multiples of hf (i.e., Planck's constant h times the frequency of the wave). So for each frequency of light there is some minimum chunk of energy that it can impart to another particle - that minimum chunk is called a photon.
So say you have a light wave with energy hf spreading out from the middle of a room. The wave spreads out in all directions, but it only has a single photon of energy to impart to the atoms in the walls around it, so it will only interact with (at most) a single atom in that room. Which atom it "chooses" will be inherently probabilistic and based on the amplitude of the wave at each point in the room.
Hope that kinda makes sense :D
You say one photon kicks of one electron! Perhaps this is better understood by considering light passing as an em wave and the energy removed from the wave to kick of an electron is a photon quantum’s worth. The diminished wave continues to do what waves do. Light and radio waves are not photons but their impact on atoms can be seen as discreet energy packets.
E=hf was by Planck, not by Einstein
It's a bit like a domino effect. Does ionized hydrogen attract photons?
If photons emit electromagnetic waves that "shapes" the photon, then higher speeds, like a meteor causes electromagnetic field to "shape" the photon into a bullet shape that's robust enough to dislodge electrons from orbit ?
Readers who like Physics. Can you understand this post on the concept of Dimp, the dimensionlesspoint, I am struggling to explain it clearly. This from the next Musea.
1. DIMP stands for dimensionless point - DIM-ensionless P-oint . This is a single point outside the universe, that contains all light! This is a challenging concept and difficult to even imagine. How can anything, let alone all that, be in a point without dimensions? But it's based on what we know now. When you understand my single concept of DIMP, the rest of these physics ideas fall into place. So I will try to explain it in a couple of ways. Read, this section carefully!
Dimp or the dimensionless point is a single point that contains all PHOTONS.
(For visual purposes, think of photons as little pieces of light.) That means Dimp contains all ELECTROMAGNETIC ENERGY in a single dimensionless point. That means all light is in a single point, a point that doesn't have four dimensions, or three, or two, or even one! Pauli's Exclusion Principle is a clue. It says all photons ( a type of boson), can be in one point while their counterpart, fermions, cannot. Remember a PHOTON DOES NOT OCCUPY SPACE! There is no limit to how many can occupy the same quantum state. Photons, all of them, can be in a single point!
By definition we know that photons are outside of time and distance. Infinite time dilation (no time) goes hand in hand with infinite length contraction (no distance to the destination). Because a photon is outside time, it is eternal. Because a photon is outside distance, there is no distance between any two photons. They are all together in an eternal point. They share a dimensionless point! That means all light is in one point.
If there is no distance than photons are everywhere at once - or everywhere at once and back! That means that the photons in the singularity that started the big bang and our entire universe, are here now today, and will be here forever in the future.
Here's an official quote from Physics org: From the perspective of a photon, there is no such thing as time... It doesn't experience distance either.
My idea that all light energy is gathered in Dimp, a single dimensionless point, eternal and outside of space-time, is not easy to comprehend. Let's try this visual analogy. Look at photons, not as individual particles or waves of light, but as a quantum ENERGY FIELD that is everywhere at once, a BLANKET OF LIGHT that surrounds everything in the universe and is in every part of space time at the same time. Still with me?
Because Dimp is eternal and outside time; that means Dimp is these things:
1. Here before the Big Bang, during the Big Bang, and here long after this universe will have ended. A vast reservoir of all energy. And our universe, where there is space and time, is a small subset of Dimp, just as an ember is a small subset of a massive bonfire.
Dimp was the singularity, the dimensionless point, that the Big Bang exploded out of. That means Dimp is separate from, not only time and distance, but gravity, mass, space, you name it! There is no acceleration in DIMP therefore no gravity!. There is no expansion in DIMP and no charge. Further the virtually endless amount of energy in Dimp never changes. That is some weird point!
Dimp, the dimensionless point concept seems to explain all the following separate concepts; COSMOLOGICAL CONSTANT, ZERO POINT ENERGY, VIRTUAL PARTICLES, ENTANGLEMENT OR 'SPOOKY ACTION AT A DISTANCE', AND VACUUM ENERGY.
Dimp also means the electromagnetic force and force of gravity (see later) are not connected. They are separate and can't be unified.
The simplest way to explain Dimp is to start by saying, there are TWO UNIVERSES.
THE FIRST UNIVERSE is DIMP, the dimensionless point, or the universe of photons, light, and energy, where everything that is, goes the "speed of light".
THE SECOND UNIVERSE is SPACE - TIME where everything goes slower than the speed of light. This is the universe of everything that is - BUT photons.
Nothing in Dimp goes slower than the speed of light. Nothing in the universe goes the speed of light. Does that help clarify? BUT WAIT, it gets more strange...
The problem is that to have a "speed of light" one has to have both time and distance. But a photon from it's point of view is outside of both time and distance. From our space-time point of view it looks like photons are going a set distance in a set time, but that is our illusion, not their fact. So "speed of light" is a misnomer. More about this puzzle later.
.
Physics often uncovers a dark zone of unexplained phenomenon. Dimp may help explain those dark zones including:
1. The singularity where the big bang began.
2. Dimp, the dimensionless point of all photons, all light.
3. The dark area in an atom during a quantum jump where the electron instantly jumps over, when it jumps from shell to shell. " Everything in the quantum mechanical universe ... happens in quantum leaps. A quantum leap is a discontinuous transit between quantum states - an electron jumps instantly into another energy level... There is no in between state and it doesn't take anytime for the leap to occur." Moring.
4. The empty zone in an atom where the electron orbital is not.
5. The Two Slit Experiment black bands where no particles/waves land.
6. The nodes of waves where the particle probability is zero.
7. When two mirror image waves collide, constructive interference occurs which annihilates both waves, and turns them into pure energy. Dimp is that pure energy.
8. Virtual Particles where particle A and Particle B pop up out of the void, then come together and there is total annihilation.
9. Quantum tunneling? The space between when Particle A disappears on one side and materializes on the other side.
10. Entangled particles where A and B are strangely and instantly connected no matter the distance between them.
11. Force carriers.
12. the infinities that renormalization tries to fix. With Dimp they are correct as is.
13. Wheeler's Great Smoky Dragon analogy, where A is the head of the dragon, B is the tail of the dragon and the area between is smoke.
14. The 120 orders of magnitude of the vacuum energy density or cosmological constant.
15. Non locality may also be explained by Dimp which is outside of time and space.
Where is Dimp? Everywhere that there is vacuum energy or space, or everywhere!That's because any surface not at absolute zero emits photons, and absolute zero can't be reached. It"s both outside and inside space time! But wait - more weirdness:
PHOTONS DON'T GO ANYWHERE. Remember the speed of light problem? Photons do not move out of dimp! If they did they would have time and distance, which they do not! Photons pop out of Dimp. They are created out of Dimp and return to Dimp. Text books say, the only interactions a photon has, are to be created or destroyed. We see a photon being created or destroyed, but nothing in between! Through pair conversion they send MESSENGERS: Electron / Positron pairs as the energy to do the work . That suggests that electrons and positrons are vehicles for photon energy! That means when a photon pops up in our universe, it does so only as an electron / positron pair!
We know that as an object approaches the speed of light it: becomes heavier and approaches infinite mass, (Infinite mass is also infinite energy, E=MC2). It contracts in length, and time slows. Could that object keep going faster, it would reach the speed of light and be outside of time and be eternal. SO if mass could go the speed of light (and it can only approach it) it would be infinite energy with no length in a single dimensionless point, outside of time! Sound familiar? That is DIMP!
Totally confused? Take a break and try this visual exercise: The light from all stars shine out in every direction with eternal photons that are everywhere all at once.
Look, a web of photons connect all space and all time, now and forever - a net of light!
Does each photon have its own electromagnetic field?
A photon is just one electric field perpendicular to a magnetic field.
@@kripashankarshukla4073 nope that's a transverse EM wave
What is wavelength?
Syed Ilhan its the distance between two consecutive heads or tops or whatever, or two consecutive bottoms of the wave
But how come spectral lines tell about light is a particle because they can be waves and electrons just need to absorb and we'll get the spectrum
What is said after 2:07 or so makes indeed no sense.
The fact that a specific gas emits one or more specific wavelengths of light does very little to explain quantization.
It does far more to explain the atomic model of matter.
OK I stand corrected.
2:18 Why do you have to put hydrogen in this tube?
I know I'm late, but you can put any kind of element. However, each have their own color. Hydrogen have blue and pink while others, like Fe, Iron, have green, red, blue, purple, and I think yellow.
*why photon has tow plane of polarisation.*
how do we know that UV is higher in frequency than red and other the forms of light ?
E=hf, E of UV light > Visible and h is a constant which means that UV light must have more frequency than visible light.
@@kripashankarshukla4073 Your explanation does nothing but reiterate the formula. The question was: How do we know this is true.
what is polarized photon
Light is a transverse EM wave which means that it travels in all directions. One oscillation i.e one electric field perpendicular to one magnetic field is a photon. First of all a singe photon is not, a whole beam of light is polarized. If all the photons travel in a specific direction, then the beam is said to be polarized.
@@kripashankarshukla4073 Sir, I see you try to answer a lot of peoples questions. But it appears yoyou yourself do not really understand the questions.
The direction of travel of the beam of light, or the individual photons within that beam have NOTHING to do with polarization.
Manno. Polarization is best explained in the *wave model* of light. (Not the *particle model* , so we do not speak of photons)
In the *wave model* of light, we consider light as an electro-magnetic wave, but we usually explain polarization by only looking at the electric field.
1) The electric field is always perpendicular to the magnetic field. (The changing magnetic field can be said to induce the electric field and vice versa.)
2) Both the electric field and the magnetic field are perpendicular to the direction of the (beam of) light.
Now that we defined the link between direction of the beam, and the direction of the Electric field and the magnetic field, we go back to polarizatio by only mentioning the electric field.
- Unpolarized light contains all (or at least many) orientations of the electric field (as long as they are perpendicular to the direction of the beam.
- (linear) polarized light contains only ONE orientation of the electric field.
Yes I admit my mistake that I didn't understand the question myself. SORRY and i also liked your comment
@@kripashankarshukla4073 LoL..
Its ok. Nobody is perfect. I hope the next person who knows a flaw in my explanation will also correct it.
It is also always a choice of to what level of physics you explain.
My (long time ago) highschool physics would not be considered correct in a PHD program.
And a (long time ago) PHD physics explanation would not be considered correct in modern physics.
Polarization is one of the harder phenomenon in optics. But at least, it is not related to the direction of the light (beam or particle).
Appreciate your response.
If photons are particles, not waves, what is the meaning of the wavelength and frequency here?
Photons are quanta. It takes many quanta to describe a spectrum. A single quantum gives us only one energy value, but it does not mean that the em field that this quantum came from doesn't contain quanta of different energies, i.e. multiple different frequencies and wavelengths of light. For that we need to detect many of its quanta.
Ask an astronomer "How are photons created or destroyed", talks about quantum jumps.
Q. The only interactions a photon has are to be created or destroyed.
My idea is that the photon pops up as an electron positron pair that power the quantum leap or releases a photon.
That means that the leaping electron interacts with the electron positron pair. One electron and positron annihilate which powers the left over electron to jump.
That means that in space time photons are always electron positron pairs.
I do not quite understand what you are saying but my understanding is that a photon is a little packages of energy that is connected to the electron. From chemical experiments that I saw many years ago I found that when we used the shell theory of an atom and when the outer shell would be able to carry one more electron but shouldn't for that atom then the salt in water would have a color. I think cupper where blue or green. All atoms with an outer shell one short of being full would do that but the color would be different according to what shell it was. It there fore make sense to me that photons are packages of energy in the visible light frequency area but I still have troubles understanding long waves. being photons being kilometers in size.
@@leonhardtkristensen4093 My idea is simple, when photons pop up they enter space time as an electron positron pair. That pair does what many claim the photon does. When an electron positron pair annihilate, they turn back into the photons.
Misconceptions about photons. What if I told you photons don't actually move. They allow photonic energy to travel in the same way air allows sound to travel. Duality of light is a misconception, particle and a wave. Speed of Light is another misconception or worded incorrectly. It's actually the Speed of Energy. Take picture of a pendulum and see what it does (transfer of kinetic energy from one end of the pendulum to the other) and you'll have a better understanding of why/how light/energy travels so fast. The word you need to get familiar with is propagation.
1:05 “He also showed that photons are quantised, that means that they travelled in little discrete units”. Is this actually true?
Do they travel as quantised units? Or are they only detected by quantised interactions with matter? These two things are not the same.
We only have information about electromagnetic waves by virtue of measurement, i.e. their interaction with particulate matter. Beyond Maxwell’s and Heaviside’s mathematical models, we have no information about how electromagnetic waves propagate. Indeed, when we do not examine them during the double-slit experiment, their paths reveal that they behave as waves right until they interact with particulate matter at the screen. But if they interact with matter by an observer measuring which slit they pass through, all of a sudden their paths reveal that they behave as particles. Surely we can only say for sure that their particulate properties come about through interaction with particulate matter?
2:20 Similarly, emission and absorption lines say nothing about how electromagnetic waves propagate, only that they are emitted and absorbed by particulate matter at discrete wavelengths. Again, why does this show a quantised characteristic of propagation and not a quantised characteristic of wave-particle interaction?
You are correct. Photons don't travel. They are the amounts of energy that get exchanged irreversibly between the free electromagnetic field and matter. That it's the field that is quantized and not the matter follows from the fact that matter is the field. It's not something different. The electromagnetic field inside atoms is the exact same field that is outside of them.
What happened at 2:13 ?
There was a glitch in the matrix
error
paul.exe stopped
Discharge tube is hard to say it's ok.
It's funny to think that Einstein won the Nobel prize for this and he didn't win it for the theory of relativity.
This is really wrong in more ways than I thought. It's Red into infrared then Microwaves and then Radio... and on the other end it's Violet into Ultraviolet, X Rays and Gamma... Why would Red go into Ultraviolet and Violet into infrared? That doesn't even make sense.
The following quote reiterates what I've been saying - photons are outside of distance and time. Yet I disagree on how the author interprets those facts. My suggestion is that there are unproven suppositions here that are wrong.
First read this and then I'll comment.
Nothing can travel at light speed - except light... so what would a journey across space be like for a photon, a single light quantum? Distance would shrink to zero and the photon's clock would stop ticking altogether. For the photon, there is no distance and no time; a journey from one side of the Universe to the other is accomplished in no time at all because for the photon the whole Universe is contracted into zero length. The photon effectively is emitted and absorbed instantaneously. From the perspective of the photon it is as if the photon never existed, because what can exist for zero time? What all this actually means is something way beyond human comprehension... Robert Snedden, The 15 Minute Einstein.
Comments: "there is no distance and no time", I agree. But "a journey from one side of the Universe to the other", could not happen, because photons are outside of distance, so there is no distance between any two photons. They are no distance apart. They are in a single dimensionless point. The same goes for time - the first photon and the last are all outside of time and eternal. They are all always in a single dimensionless point outside of time and distance.
To say a photon is emitted and absorbed suggests that photons have a start and a stop, a beginning and an end. But how can something eternal have a start or a stop? It cannot. We obviously SEE one but we also see a specific speed of light! Something is missing, if photons do not experience distant or time, then how can light have a specific speed? That is saying that photons have time and distance. They do not! They seem to to us; it seems obvious; but Einstein proved they do not!
Let's go further,
Professor Einstein said space and time are inextricably linked. But photons are outside of time, so they are also outside of space-time that are inextricably linked together. They are not a part of space that needs time to exist or time that needs space to exist. That means anything going the speed of light is outside of space time.
If photons are outside of space-time then they had nothing to do with the Big Bang that created space time. Photons are separate.
My suggestion, as I've written before, is that photons are eternal. Photons were the singularity that the Big Bang broke out of.
Then I go further and say that we know that photons are emitted and then instantaneously absorbed, experiencing travel through space in no time. Perhaps photons in pair conversion convert to electron positron pairs that do exist in space time. Then I go further and suggest that photons and electron positrons are the same thing but in different forms.
More to follow.
I find it fascinating that science goes to great lengths and still can't define light. Packets? Units? Really?
Science can define light just fine. This RUclips video can't. What does this tell you? It tells you that this RUclipsr doesn't know science.
@@schmetterling4477 ha ha ha.....replied the you tuber. Awesome.
Andersen glitched at 2:15
Your electromagnetic spectrum diagram is Very wrong. Fix it.
185437
you gonna change my mined
Where do all the photons go to die. Shouldn’t I have piles of photons in my room
Is it true that without EM (Light), there is no atom, no matter, no cosmos: and, EM (Light) brings the physical universe into existence.? Very informative. Thanks for sharing, Lord-Jesus-Christ com
Curious that Jesus didn't tell you that, isn't it? One wonders why he lied to you... unless, of course, he was just an ordinary human of his time. That would be the only excuse.
Hey ! You challenge khan academy
I like Einstein but how did he become interested in this of all things on earth as a young man? He didn't get paid and had no time for it. He squeezed it into his free time.
Amar Duratovic Quite amazing. He was a scientist as a person, not profession. He continued on the one unifying law afterwards. I wish he had done that operation at 76.
A guess is that there has been persons like that throughout time where we get our leaps forward. Then we copy and apply it to our engineering.
you look tired or sad... are you ok?
Fix your wavelength/frequency diag bro ,its bad science.
0:17 Wrong! Radio Waves can be astronomically huge! If a wavelength of "light" is a photon, then WRONG! At the same time though, from the perspective of said photons, Spacetime dilation is at its most extreme and they experience no distance and no time.
Your explanation after 2:07 shows a pretty bad understanding of the physics of light.
The fact that a specific gas emits one or more specific wavelengths of light does very little to explain quantization.
It does far more to explain the atomic model of matter.
You try to make us stupid
Diagram is WRONG!!! Fix the wavelength or submit a correction.
terribly explained
You just explained a theory nothing else