Atoms and Light: The Nature of Light, Matter, and Quantum Mechanics

[@frozennorth3426]

I can’t believe that material of this quality and breadth is available anytime anyone wants it. What a gift to the world.

[@Beencouraged777]

Right

[@JasonKendallAstronomer]

You’re very welcome!

[@randcauthon7702]

Ml ok

[@lowersaxon]

Astonishing Only for people used to pay for knowledge at almost every conceivable level of society. Here, write a friendly letter to a university and attend physics lectures for free. If you‘re not qualified officially ( by law) they wont give you the certificate qualifying for certain careers, nevertheless, as a pure consumption good its free.

[@thejorgelopez9135]

As someone who is completely obsessed with physics ( I have 2 constants of nature tattooed on my neck just to give you an idea of how obsessed ) but doesn’t have a formal education in physics, these videos are extremely valuable and informative. Please keep up the great work.

[@Beencouraged777]

Right

[@Peca.kaspic]

“No ragrets”

[@DocSeville]

My dad always said the better someone could explain something the better they understood it. As far as im concerned this dude understands this stuff! Thank you for yhis amazing vid!

[@Beencouraged777]

Right.

[@frozennorth3426]

yep. a good teacher is worth their weight in gold :)

[@pavelzsilay1581]

One of the best explanations I have ever seen - well done 👏

[@mikehipps1015]

I wish I could stay watching but I have to sleep before I leave for work in five hours. I'll watch this soon. Thanks for your good work.

[@slipperysam1337]

Hey, you, you're finally awake

[@LiftPizzas]

Thank you for these. Glad to see they're being updated, too.

[@yuzuMM]

I fell to sleep so hard with this its insane, like best sleep i had in ages thanks man, like im not even kidding like legit, im saving this for later

[@Garenzo314]

How many times did you almost say "a disturbance in the force"? Loving the content and presentation. Thank you for this.

[@kronoscamron7412]

The force is stoooooooong with you young skywalker.

[@kronoscamron7412]

Once more the sith will rule the galaxy and we will have peace .

[@reqsone5450]

You're the best teacher ever ❤️

[@longcastle4863]

Interesting that protons and electrons have exactly equal amounts of opposite charge despite being of vastly different masses.

[@reichen609]

Wow! I like this class!!! Saving it for later!!! Thank you for uploading, professor! 🌌🤩🌌

[@jimbernard8964]

Fantastic channel. So happy to find it. Thank you.

[@paulmicks7097]

Jason thank you for extremely excellent vidiget series, i have a question... What if science knowledge came before religion, would you be considered a charman or priest in such a place ?

[@seditt5146]

Perhaps you could help e. From Light perspective Time does not progress. Since Wavelength and Frequency are a function of such how could I determine what a Photon sees when time and Space do not exist for it. I keep coming back to a rest mass that is small albeit different for each Frequency. Without it these frequencies , mass time and everthing else seem meaningless

[@JasonKendallAstronomer]

It's important to note that there is zero evidence of light having any mass, and that's not for lack of trying to find and determine it. It is truly puzzling since light has momentum, which is dependent upon wavelength. This all arises from the constancy of the speed of light. Another way to get a foothold is to note that light does not have a rest frame. This means the very idea that "time does not progress for light" is not really defined. It's just one way of saying that "light has no experiences". There's a funny implication with saying only that "time doesn't exist for photons", and that is that "space doesn't exist either". Essentially, what you're running into is a paradox. That's why you're wheeling around trying to find an offramp with frequency-dependent mass. Photons with different masses would have different "experiences" in their (non-existent) rest-frames(???) as they are observed to propagate. Since this does not happen, experimentally, and as a fundamental postulate of SR, you'll find that there is no solution. Just like Einstein did. kzbin.info/aero/PLyu4Fovbph6ezYDf2FI2b8a3KMCqEr3oL&si=P9eWhrV60zRk8rRO

[@jfairway1]

Photons don’t have eyes, they don’t see anything.

[@lowersaxon]

Photons „see“?

[@bastiaanwilliams8398]

Thank you. Does this mean you cannot see further than the space between the light and your eye, when the light hits your eye?

[@user-pw9bh8vw4t]

Just excellent - thank you very much for all your efforts and teachings!

[@JasonKendallAstronomer]

You're very welcome!

[@schr75]

Great video as always but you have misunderstood a thing. The beep sound in the Apollo communications are called a Quindar tone and was used to switch between transmission modes on the tracking network, not as a kind of "over" signal. en.wikipedia.org/wiki/Quindar_tones

[@JasonKendallAstronomer]

Oh, thanks for the note! Great to know!

[@illumencouk]

@12:28 - our physically seeing these various forms of waves interact is best demonstrated in Tsunami footage where billions of litres of water can be seen flowing in one direction, then within minutes another, other parts of the harbour will appear to not be under the same effects and behave 'normal'. Slow play speed and the sound turned off is how I study the footage.

[@illumencouk]

Oh and the mysterious loss of buoyancy effects many of the vessels. Bermuda Triangle style.

[@paulmicks7097]

Great topic, thank you Jason

[@JasonKendallAstronomer]

My pleasure!

[@n-da-bunka2650]

What's the mass of a quark? Is it close to the size of an electron?

[@TheMemesofDestruction]

2:42:06 - Stuff does things. ^.^

[@gehardcev]

MANTAP 👍🌟

[@kronoscamron7412]

Is doppler shift what we see sometimes when stars twinkle red and blue?

[@JasonKendallAstronomer]

No, twinkling happens because of random refraction in the Earth's atmosphere.

[@atomipi]

of course you cant get the speed from one measurement of position. if you take one snap picture of race car, you dont know its motion

[@ioanbota9397]

Realy I like this video so so much

[@ilanle]

Thank you Jason

[@tnekkc]

I thought there was an absolute speed relative to the cosmic background radiation.

[@JasonKendallAstronomer]

Yes, there is a speed which is the sum of all motions relative to the CMB. But the CMB isn't a frame of reference that itself has has an absolute frame of rest. The CMB can be used to find our net motion through the sky. The CMB Dipole anisotropy is the sum of all peculiar motions that we take through the universe. That doesn't mean the CMB is a Standard Frame of Rest.

[@GDSSBAMBUR]

Thank you for these

[@ServoSambo]

Thanks

[@JasonKendallAstronomer]

Thanks for your AMAZING contribution!

[@marceloribeirosimoes8959]

It's funny when we see materialists trying to describe "life"... Nice vídeo! Thank you.

[@JasonKendallAstronomer]

So true! Thanks!

[@vou5u]

Wow thank you very very much .

[@JasonKendallAstronomer]

You are most welcome

[@shannonbarber6161]

You need to draw the Greek metaphor out and give them more credit. Fire is energy which is carried by photons. Transmutation is how nigh all elemental matter was made other than hydrogen and a bit of He & Li IIRC. Stars, the gods, do rip apart atoms. E=mc² means phlogiston is correct. On & on. As soon as you find a hard edge, any rock or a knife's edge, you know the (solid) world is quantum. If it was continuous with no crystallization then everything would always have to behave like fluids.

[@jaquelineq.3334]

THANK YOU

[@elijaguy]

genius. So nice so specialist

[@JasonKendallAstronomer]

Thanks! And thanks for being a Member!!!

[@garyjones6142]

So those ancient Greeks thought of the atom as the smallest element of matter that cannot be further cut. True enough until we eventually figured out how to cut them to pieces in things like an atomic bomb. Good thing Alexander the Great didn’t know that, just saying.

[@albin2232]

There is no light. Everything is darkness.

[@yecto1332]

Why do u think that

[@SaltineAmericanCracker]

The speed of light is not a constant. Scientist of slowed light to a stop in a lab.

[@JasonKendallAstronomer]

When we say that it's a constant, we mean to state that the speed of light in a vacuum is constant. It is well known that light has different speeds in different media. I gloss over this in these videos for the sake of simplicity, not because I'm unaware. All that being said, one quite interesting thing about light's speed being slower in water, is the visible Cherenkov radiation seen in commercial nuclear reactors. All the best!

[@e7ebr0w]

Perhaps I misunderstood a photon.... I thought a photon was the amount of light per second. A photon is one second long I mean. That's how wavelength and frequency are determined. So saying photons per second makes me think I'm wrong

[@DrDeuteron]

Physics does know about our system of units.

[@spitgorge2021]

Nope. A photon is a particle.

[@robinbrowne5419]

A photon is the smallest quantity of light we can have. It acts like a wave when traveling and acts like a particle when it hits something.

[@manfredgebhardt6562]

Noch 2 da

[@peterleveillee1321]

There is no dark side of the Moon really, as a matter of fact, it's all dark.

[@manfredgebhardt6562]

Gut

[@ivankaleoniefuchs333]

haha...If you could travel faster than das constant of light's speed, then you would not visually see any light at all, und you could see anything in our known universe...Everything would appear to you to be only black (nothing). You would not be able to determine when you will arrive or where you will arrive because you could not determine path, distance, or time. Simply because "our" math indicates something to be possible, or even probable, does not conclude it truly exist, that it will ever exist, or that it can ever happen. Humanity will never travel farther in space than our own Solar System for a gazillion reasons that are well-known already. Humanity will "possibly" colonize das Moon, but I have much doubt Humanity will ever colonize Mars or any other place in our Solar System before we exhaust all of our natural resources required to do it. I doubt Humanity will ever evolve into a Class 1 civilization. "If" Humanity survives long enough to see our own Sun begin it's nuclear death of Hydrogen to Helium phase then we will witness our own demise as it expands und consumes das last of our Human species still attempting to exist under-ground. Humanity will never land a manned-mission in das Proxima Centuri planetary system. Auf Wiedersehen :-)