What is Electromagnetic Radiation?
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- Опубликовано: 10 сен 2024
- In this video, we discuss electromagnetic radiation, also known as light or radiation. What is electromagnetic radiation? Why is Infrared (IR) radiation associated with heat? What is a blackbody? What is blackbody emission?
#physics #chemistry #electromagneticradiation #light
Thank you for a wonderful educational explanation. Sure clarified so many things ❤
The most intuitive way to explain how or why a particle like a photon (or electron, etc) might behave as an uncertain location particle while also like a polarizable axial or helical wave ''packet'', given that everything in the universe from electrons to solar systems are in orbit with something else pulling them into polarizable axial or helical apparent waves depending on the orientation of their orbits as they travel thru space, is that they’re in orbit with an undetectable dark matter particle pulling them into polarizable axial or helical apparent waves as they travel.
And given that we know we’re in a sea of undetectable dark matter but don’t know where it’s disbursed, we can imagine that they’re in orbit with an undetectable dark matter particle pulling them into polarizable axial or helical apparent waves as they travel where the speed of their orbit determines the wavelength and the diameter is the amplitude which would explain the double slit, uncertainty, etc. No?
I think Einstein's wrong, that time is constant and that dark matter is the limiting factor to the speed of light. I think it’s not 'space-time' bending but rather gravitational and dark matter density variations.
#WaveParticleDuality #TheoryOfEverything
Capacitance, reflectance and phase create space. Most spirals you see in nature or vacuum is hydrogen reflections ratioed with PI. You see, humans try to draw lines and numbers around interference patterns.
Hi. Thank you for a very well created presentation :)
Disclaimer: I am not a physicist, just well educated (non indentured).
Something I have never quite been able to conceptualize directly in my mind is the relationship between amplitude (voltage) and temperature.
It is said that both the amplitude and frequency of the wave "both" increase with temperature (Unlike a normal electrical wave where voltage would only increase the amplitude without and change in the wavelength).
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In an idealistic situation where we were to begin with say a narrow frequency "entirely" within the Infrared, would the frequency of that narrow band become higher as the temperature increased or would the amplitude increase without a change in frequency?
As an alternative to the question in line with your black body example here, would the frequency of the individual bands remain the same while the amplitude of the frequency only in the visible bands increasing in amplitude? (No change in frequency at any individual bands)
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33:41 This is a question in my mind that I can't seam to find an unambiguous answer for. The prorogation of a photon as a wave.
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If I were to create an ideal situation where I could release a single photon from an uninhibited point (It has the liberty to travel in any direction along the radius of the sphere) Would it:
a. Send out a narrow wave along a single radius line?
b. Send out a single wave as an expanding spherical shell in all directions?
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I ask this question because common examples such as double slit show photons traveling in a narrow direction like the coherent light of a laser. But my mind expects something more akin to a 3D version of the waves in the pond example.
It makes a significant difference to how we interpret the double slit example as well as experiments such as photon entanglement.
interesting perspective :)
@@tybeedave There are some weird oddities in the dual slit example. Some use incoherent light, and others use a laser beam (coherent light), and then some supposedly use a single photon at a time (coherent or incoherent?). Then we have the possibility of filters to change the wave polarization.
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Somewhere in my mind I feel that the 3D spherical wave front may persist even in coherent or polarized light. Even if the bulk energy (amplitude) is directed more toward a coherent direction. In this you could image as per the tables in the video where all of the spherical light wave exists, but the peak that is visible/detectable is in the narrow direction of the laser beam. In the double slit experiments it would appear as if the laser beam still has the light wave outside of the narrow beam.
It's interesting stuff :)
@@axle.student slit experiments can be perplexing. i always keep in mind that at a quantum level, there is a lots of space between molecules for allowing bits of energy to filter through the barrier to keep the wavefront whole. this does slow part of it down leading to the familiar pattern.
a photon is likely made of a zillion smaller particles, like everything else.
i've not researched this subject but when one realizes anything and everything is made from smaller things, it's not so mysterious :)
@@tybeedave This we know. But still doesn't answer the question about the extent of the wave or its shape/description :)
Flat, narrow directional wave, or Spherical wave (all directions).
@@axle.student you've confused me. or i have woken up with a foggy brain.
maybe there are unobserved harmonics and/or resonances within the wave? i don't know :)
Cool video! Like you said at the end of the black body stuff, all materials have a different absorption, reflection spectrums.
Yes I learned about this in graduate level heat transfer.
Empty space is not empty. It is filled with photons (which are particles with mass), hydrogen, etc.
I respect your attempt to be accepting of "alternate" views. And by that I mean religion.
I do say Christianity (in particular, Catholicism) is the way to go, but I respect other people's views as well as how challenging and complex life is.
Looking forward to see organic chem by yuh
Very useful, thank you! But I'm a little confused by the term "intensity". Is there anything more to it than simply "amount of" or "quantity of"?
You can also think of it as the flux, ie the amount of energy transferred per unit area. Specifically for electromagnetic waves theres also the poynting vector, which represents the directional energy flow but this has some limitations (like its only (sort of) for vacuums)
photon flux. higher intensity, more photons in an area per second
If it was sound, then loudness would be intensity and pitch would be energy (frequency).
What is oscillating and around what?
It's a combined electric/magnetic field. The intensities of the electric & magnetic fields are what is oscillating. The changing electric field is what creates the magnetic field. All charged particles (i.e., protons or electrons) emit "electric fields". Electric field is just a human made idea to represent how charged particles exert forces on each other even if not in contact and at a distance. Charges that are in motion or are accelerating we also know emit magnetic fields. Magnetic fields are the same idea as an electric field it's just a force due to a charge but magnetic fields act in different directions. So moving charge (e.g., an electron jumping orbits), emits this oscillating electromagnetic wave.
Electric & magnetic fields are abstract in the same sense that a gravitational field is abstract. We don't know what gravity is we just know that there is some invisible unknown mysterious force that cause objects with mass to pull towards one another. Same thing with electric/magnetic fields. If something with charge (i.e., electron or proton) interacts with an electric or magnetic field then forces are going to be exerted on that charged particle in some way.
This is a very good video this is around the limit of my intelligence I just barely understand everything your saying lol
Haha I hear you. This isn't too far down the academic rabbit hole I would say around undergraduate college level.
Electronic waves don’t need a medium? Electrons aren’t vibrations of the electromagnetic field? We live in a quantum sea of overlapping fields. The field is waving the electrons.
Interesting! Was just talking about how in general as far as we currently understand it electromagnetic waves can travel through something like empty space (i.e., from the sun to Earth).
In QM Space is a field, rather than an empty void. It becomes a medium with density that can be stretched, bent and flow like a liquid which sound a little too similar to the luminous Aether and I get the jitters.
If space has density and that density increases in the gravity well of a planet or star, then we have light traveling through a medium of higher density which then invokes thoughts of variable speed of light, and THAT is a very deep and awkward rabbit hole lol
The double-slit experiment was grossly misinterpreted.
And I have a very specific reason to say that. I wasn't referring to your interpretation, but the one made 200 years ago, which oddly no branch of science has ever bothered questioning.
what is your interpretation for the double slit experiment
@@mebmeb8069 the fringe pattern is not from wave interference. It's a simple reflection pattern. Light is NOT a wave.
@@SciD1 math or didn't happen
@@SciD1 Reflections don't have second order effects.
emr is rotating and moving weak force waves/particles.
uh, from the popcorn model of reality:
make the universe manageable by applying simplicity.
our universe can be divided into 2 parts. the beginning and the end (dissipation).
now imagine a higher pitched harmonic of our reality:
This is the realm of dark matter. the ratio in the relative energy difference between the adjacent harmonics has a magnitude of between 10e64 and 10e72
7 levels of force exists within these harmonics:
time*
gravity
weak
strong
em
human thought process*
big (supreme)*
*not recognized as a force
our universe exists from the interaction of these forces
em is the dominant force in our measured universe.
the most massive dark matter particle is equal in mass to the least massive detected particle pair (neutrino/antineutrino).
shall i go on in a different post or continue here or just shut up?
That's one heck of a rabbit hole (paradigm) that your are down there. The only familiarity I could pull out of that is the concept of emergent complexity.
@@axle.student it's a hole made from simplicity lol but it follows the rules of nature and is fun to explore
@@tybeedave Is this an actual theory, or something you have come up with? :)
@@axle.student yes it is an actual theory of the reality of mother nature. and yes, it's all my fault that it is considered a viable model of nature's reality.
it does offer predictions concerning many 'mysteries' of our universe and existence.
i work under the awareness that i could be wrong. only time will tell. or proof that my assertion that one can connect the dots representing virtual e-/e+ genesis and decay, real e-/e+ genesis and decay, with the Big Bang genesis and decay event, and draw conclusions, is disproven.
these events are open to inclusion in a model.
these are acknowledged data points that, imo, prove nature repeats itself on many scales.
so, like a wave, our universe is composed of not only what we can sense, but unseen harmonics of what happens in the wider universe....
more related info is at the Popcorn Model of Nature's Reality channel here on utoob.
the popcorn in the name refers to the decay events i mention above. :)