Why Do Hot Objects Glow? - Black Body Radiation

[@alanboro]

I won't EVER get tired of repeating this: This guy is the next step in educational evolution. His analogies are spot on. His animations, friendly, entertaining and not distracting. The way he organizes his speech, how he quantifies the ammount of info given each moment is perfect. Maybe he is not concious about the educational theory behind his creations,,, maybe he is.... but nonetheless.... he is already mastering it. This channel has to go BIG

[@ButWhySci]

This so kind of you. I know I learned much better visually as a kid so I hope it helps people like me. It means the world to me that you get value out of it too.

[@shreyan80085]

@@ButWhySci bro you are the MVP for the Students

[@TheBluePhoenix008]

@@ButWhySci you're epic

[@FingerinUrDaughter]

his analogies bare horrible. dude is literally personifying molecules and atoms.

[@TheBluePhoenix008]

@@FingerinUrDaughter but it's a good analogy

[@sunalwaysshinesonTVs]

Kid: "Dad, why is the sky blue?" Dad: "Quantum mechanics"

[@Adsman100]

Rayleigh scattering of light 🤫

[@geordiejones5618]

@@Adsman100 so why ISN'T the sky purple?

[@stearnsy4005]

@@geordiejones5618 certain wavelengths are scattered more due to them being smaller, blue is the smallest so it gets scattered the most, meaning we see the sky as primarily blue.

[@celestiall7566]

@@stearnsy4005 but why

[@Physics_Dude]

The sky isn't blue. The sky shows different colors (cyan, oranges, reds, whites, greys) because of how the transparent atmosphere interacts with the light shining about it.

[@PikaPetey]

ive never had such a complex difficult thing to understand why it's happening explained to me so well.

[@TheBluePhoenix008]

Oh hey I see you around a lot. First comment this time.

[@addisonkirtley1691]

I’ve never had such a complex difficult time trying to figure out what you’re saying

[@Carsonbobarson98]

This sentence is a more complex difficult thing to understand than the video

[@andreacorrea5921]

Yes

[@CarlosAM1]

What?

[@HaukeLaging]

It is not "Bremßtrahlung" but "Bremsstrahlung" (two combined words: Brems-Strahlung)

[@wheatleycore]

I clicked on this video to find an answer to one question, but found answers to half of the physics questions I had. Thanks a lot!!

[@roxiethecockapoo1138]

Opposite for me, I found a million more questions...

[@baconheadhair6938]

@@roxiethecockapoo1138That is science

[@syedkhalid6847]

Man You'll grow exceptionally well in the Future I'm getting those vibes

[@jjphank]

The Bible tells the future is tomorrow's newspaper and these things will be bad. you'll be under the control of the Antichrist with a digital chip in your hand or forehead. And you will go into hell for all eternity if you take that chip, so it's important to read the Bible which is scientifically accurate archaeologically accurate and many more. The best explanations of the laws of thermodynamics are in Genesis 1 and 2 :17. Start getting real there's a generation that thinks the they're God like, the final generation will take the mark of the beast and be damned to Hell forever. Look at the children acting like they deserve to Rob and steal from other people & not work for it. Once they control media and everything is hate speech against Jesus Christ system there is no more truth you need to seek it out now. You're going to say Antichrist is Jesus Christ unless you start reading the Bible. Ask me any questions I'll help.

[@EBLOCK1995]

I was gonna comment the same thing

[@technation2123]

But why?

[@akshinbarathi8914]

@@jjphank science is so deep its a blending of both spiritual and real life siuttions

[@jjphank]

@@akshinbarathi8914 The Bible explains deeper things including DNA, & especially the laws of thermodynamics where evolutionists cannot explain where they come from & how! First two chapters of the Bible right out of the gate explain matter and energy and time in the first verse and entropy in the second chapter verse 17! Evolutionists cannot explain these things they always have to start their Theory in the middle where matter and energy are already here! So sorry, you lose ! you lose several ways because evolutionists are dumbfounded to what the Bible says scientifically in the first two chapters! They just lie and say yeah let’s ignore what the Bible says and so you’re believing the lies from schools and society Is the Bible stupid depraved evil and dumb ?then it’s OK to hate it but the truth is they are what I just said & the Bible is good and pure and they hate it for that reason and are lying about it to you! Look for the truth if you don’t you’re willfully ignorant and you’ll end up in hell!

[@MichelleHell]

Would have been cool to add the different kinds of radiation that occur from the different movements, with their spectrum. Vibrations generate infrared light, rotations generate microwaves and translational energy generates radiowaves, etc.

[@zilit5434]

Its about the Energy that is released not what movement is happening Higher energy = shorter wavelength

[@MichelleHell]

@@zilit5434 IR spectroscopy is used to determine functional groups present because they excite rotational modes. They've even narrowed down specific vibrational modes of some functional groups to narrow wavelengths, meaning they can activate a specific type of vibration. Our microwaves activate rotational modes in water molecules. UV excites electrons enough to cause chemical reactions to take place. Translational energy generates radiowaves. It takes more energy to excite an electron than it does to make a molecule vibrate. It takes more energy to vibrate a molecule than it does to rotate it. It takes more energy to rotate a mulecule than it does to translate it. Photons are emitted by accerlating charges. Electron clouds are charged thus fluctuations in the cloud will generate photons. A vibration is higher energy than a rotation because a rotation can't whip the electron cloud around as much as a vibration can. IR Spectroscopy - infared UV-VIS Spectroscopy - uv NMR Spectroscopy - radiowaves Microwave Spectroscopy - microwaves GCMS - Mass If it's not about what movement is happening, then what is the cause for emissions of differing energies? What causes a low energy photon and what causes a higher energy photon?

[@Ghryst]

@@MichelleHell wrong

[@MichelleHell]

@@Ghryst I love people who argue outside their area of expertise. If you weren't a troll you'd correct me.

[@gracefuldrowning138]

@@MichelleHell forgive me I'm just trying to understand this better. Are you saying that certain EM waves cause kinetic changes, such as microwaves causing rotational changes in water molecules, or that certain kinetic changes create specific wavelengths of EM waves? Or both. And wouldn't higher energy EM waves cause a molecule to undergo that corresponding kinetic change as well as all the lower energy excitations as well?

[@rthmjohn]

This video blew my mind multiple times. I wish school could have been this stimulating.

[@lexlex44]

Public education usually sucks, it doesn't matter how much money you pump into it, it will usually suck

[@ttchme9816]

Well, some professors do stimulate girls and give high grades, amirite?

[@petermuller7079]

"Bremßtrahlung" :-D :-D :-D :-D would be a really cool spelling with one of the most german letters. Unfortunately it's spelled boringly "Bremsstrahlung" ("brems(en)" = to brake + "strahlung" = radiation)...

[@rajchoudhary4349]

Just realise.. why it's important to not to miss any class in school

[@danielsteinbrecher8339]

It is simply impressive how you were able to break down such complex theories to the basics and using great visualisation so one can understand them. It really helped me to understand other topics! Thank you so much!

[@goddess_ofchaos]

Damn, you've opened my mind, I've never approached physics like this! Thanks!

[@joedelpilar9079]

Each representations, animations, and explanations are on point.

[@MrDoysh121]

How does an electron produce a photon? I know it happens when it returns to a lower energy state, but how does it do it?

[@JensenPlaysMC]

classical way would be to study maxwell equations and the non homogeneous wave equation

[@miaralph2001]

any chance you have a source for the information used in this video? so i can reference it! thanks

[@ButWhySci]

A lot of this is discussed in any chapter on thermodynamics or thermochemistry in a chemistry textbook. But if you want a really thorough book, Concepts in Thermal Physics by the Blundells is gonna have the most in-depth look. Ch. 23 covers most of the stuff here.

[@rio45214]

Legit the best educational channel I've ever seen, thank you for making me understand what a dozen of Physics teachers couldn't.

[@stephenconger2029]

Ian Malcom in Jurassic Park cited black body radiation as a reason for wearing all black even in heat. I always wondered what that was about. After watching this, his statement seems to make less sense. (Though your presentation of the material made perfect sense) Thoughts?

[@celivalg]

This is so good. I've watched a lot of science vulgarization channels, but none that truly explained a phenomenon at it's roots like this one.

[@auletes]

Minor correction: Bremsstrahlung - not Bremßtrahlung.

[@ButWhySci]

auletes ss is ß if your keyboard doesn’t support sharp S. Both spellings are correct. A non-German would write Bremsstrahlung but in German it’s Bremßtrahlung. Or if you were writing it in capitals since ß doesn’t have an uppercase form. BREMSSTRAHLUNG.

[@auletes]

@@ButWhySci nononono, it's only Bremsstrahlung because it's a construct of two words, connected together. The ß can only a substitute for 'ss' when it's part of one word, like in Fluss -> Fluß.

[@ButWhySci]

auletes hmm you are indeed correct. Thanks for correcting me.

[@auletes]

@@ButWhySci No problem :) German grammar is complex and far from intuitive. Most Germans (including me) have trouble with the rules, when they have to write 'ß' or 'ss' (in doubt use 'ss').

[@robson6285]

Wow! Do you know that this concept is impossible to get a feel for, Until this video!? If you have insights so precise, correct and almost tangential then you have a really great &superusefull physicsbrain! What a benefit for us who can learn from you, thanks to you uploading so much of it so totally perfect and understandable! Thís in fact heavy to good&totally teach topic is only now usefull knowledge for me! (Thanks!!)

[@phenomenalphysics3548]

Agreed!

[@yun-z]

this guys a god, he found the way to teach even idiots relativity

[@Ender240sxS13]

I mean there wasn't any discussion of relativity or relativistic concepts in this video... He found a way to (hopefully) teach even idiots one of the fundamental principal of quantum mechanics, the idea that energy (light) comes in discreet packets or quanta.

[@fractalnomics]

0:20 "The quantum world; if you why enough times, that's where you will wind up."

[@HanusFTL]

You are tremendous at this teaching thing. Im finally able to grasp things that have confused me for ages thanks to your presentation.

[@saylensya]

these simulations make everything better, i love it!

[@morbedhorse]

Does it also happen due to the electrons being moved with higher temperatures which can make them produce electromagnetic waves in the form of visible light?, since moving charges produce a magnetic field and the magnetic and electric fields just pile up.

[@ricardotrevino2775]

That is how cold blooded animals evolved because back in the day predators followed the radiation light that we can't see.

[@supaproximalsix2155]

Don’t some predators still “see” with infrared today?

[@lobsterbark]

Warm blooded animals evolved from cold blooded ones. Don't make stuff up and parade it as fact.

[@supaproximalsix2155]

@@lobsterbark what made being warm blooded more beneficial than cold blooded?

[@lobsterbark]

@@supaproximalsix2155 Being warm blooded isn't an on-off state. It's a continuum. The stronger twords the warm-blooded end of the spectrum, the better an animal is able to regulate it's body temperature. A completely cold blooded animal would always be whatever temperature it's environment causes it to be. A completely warm blooded animal would always have the exact same body temperature. Higher temperature allows many chemical processes to happen faster. Including the reactions that cause your muscles to move. So if an animal can keep warmer than other animals in the same conditions, it will be able to move faster.

[@supaproximalsix2155]

@@lobsterbark thank you

[@dzfz2100]

Hm, something I still don’t understand is how higher temperatures enable transitions between higher orbitals and the ground state. I thought photons have only a single unit of angular momentum, so you can’t transition between more than one orbital level at a time?

[@volbla]

Pretty sure they can transfer between any two states, if i remember my Bohr model correctly. Why should their angular momentum matter for that?

[@dzfz2100]

@@volbla QM model for atomic transitions has selection rules for allowed transitions, one of them being that a transition between orbitals of different parity (eg., s-to-p, s-d) involves a change in angular momentum of the electron. Since a photon can carry only one unit of angular moment, a transition can only occur when the change in AM is 1. So d-d transitions are parity forbidden, as are d-s transitions. Bohr model doesn’t consider orbital parity - the model fails to account for parity-based selection rules that have been experimentally observed

[@volbla]

@@dzfz2100 Huh... Well that sure sounds like some stuff!

[@dzfz2100]

@@volbla yeah it’s…. Heavy. Explanations for spectroscopic transitions get complicated quickly when using quantum mechanical models… but lower levels of theory don’t fully explain most experimental observations.

[@JayAyyWhy1231]

@dzfz2100 Even though there may exist states between a high-lying energy level and lower/ground states, there may be allowed certain transitions which bypass those, thereby emitting one relatively larger photon.

[@Andrew-zq3ip]

For the first time ever I understand why it's called Black Body Radiation. Ty

[@bananajoe3669]

Nice channel and nice vid! But... 07:55 Bremßtrahlung is written Bremsstrahlung in german. Trust me, I'm german... 😀

[@navyjosh1]

This is way better than the way my professor explained it.

[@Betleyman7853]

Great explanation of black body radiation. Thank you.

[@32.saibahelal21]

Man, I came here to clear one concept, and he cleared so many. Thank you so much, you're not only feeding our curiosities, but helping students with bad teachers too :))

[@anjamoro8384]

Nice video! I didn't know much of the stuff in the video so this helped me learn a bit more physics

[@munkhbayarb.5020]

Impressive teaching, sir.

[@fikrettiryaki]

I am lost in words. Such a deep topic explained the most simple and elegant way possible. Light years ahead of other more popular science channels. Congrats

[@DasIllu]

Bremßtrahlung. You just killed a few hundred german grammar teachers there xD

[@diyashinto455]

You are truly amazing....THE PERFECTION WITH WHICH EACH INTRICATE CONCEPTS HAVE BEEN EXPLAINED AND VISUALIZED IS ADORABLE. GOD BLESS.

[@UROOZFATIMA190]

Great explanation sir. Amazing experience to come to your channel keep it up.😊

[@florentinosanchez3969]

Your explanations are AMAZING!!! Thank you so much

[@vasdgod]

Nice video which explained the concept easily

[@yoboitmose]

The perfect mix of slightly wrong vocabulary to explain things so simply.. you do amazing work my friend.

[@EwemizDreamsRawks]

Your visualizations are awesome! Thank you so much for this!

[@legitdoc9587]

The way you delivered the concept by spot on explanation and amazing animation.. Just interconnected every concept I studied in basic physics. It was truly a delight to understand something with such certainty🙌 Thank you for this🌌 Subbed and will definitely watch more!

[@gogonogo2069]

Brooo, I actually learned

[@SergioTwitter]

Great video! Thank you!

[@nafeesaneelufer5023]

Awesome comparison of electron, em field with boat, waves in water. Good comparison for perfect understanding

[@ldl50]

This seems like a good discussion of mechanisms for light to be emitted, but I feel like there are phenomena discussed that aren't involved in black body radiation. Specifically, photons emitted by an atomic electron transition aren't what we are considering when talking black body... right? Atomic electron transitions are going to give us an emission spectrum with a characteristic set of lines and black body radiation is a smooth curve with a characteristic peak determined by temperature. I feel like we should only be discussing thermal radiation when talking black body, i.e. photons produced by accelerating charges and dipole motion, NOT transitions. Perhaps I'm wrong, all that college physics was a long time ago.

[@AngadSingh-bv7vn]

I don't know. The many possible states produced by the quantum system as it vibrates convinced me that this would make the radiation smooth.

[@ldl50]

@@AngadSingh-bv7vn Discrete transitions produce sharp lines in the spectrum. en.wikipedia.org/wiki/Emission_spectrum

[@priyabratadash381]

Beautiful explanation about the reality happening in the background of every glowing object. One thing I want to know here, when we give energy to an object and excites its electrons or brings changes in its pre existing EM field, does this excitation causes photon emission ?? Or after the excitation returns back to its ground state, which is a stable state, photon is emitted in equality to photon absorbed during excitation..

[@Lincoln_Bio]

The photon is emitted when the electron returns the ground state, it's the emission of the energy that caused the excitation

[@fugitive6549]

Could you please explain ultraviolet catastrophe next? I never understand why an object can't keep absorbing more and more photons till it gets destroyed? I watched other videos saying that it's because light is quantised as photons thus cannot absorb more than certain frequencies but still it doesn't quite explain why.

[@sweetchillie5224]

it's one of the best and most devoted videos I have ever seen ,good job !

[@sanaullafazili688]

Wow!!! You are incredible

[@Subtlenimbus]

Black body radiation regards spectra from a very specific type of object: Black Bodies. A hundred years ago the physicists used soot or some other carbon material for it. They wanted as perfect an absorber as they could get. Perfect absorber = perfect emitter. The infrared emitted by a human isn’t technically black body radiation. The wavelengths aren’t distributed like black body spectra.

[@karhukivi]

Nevertheless it is a good model to approximate observed spectra against.

[@4.0.4]

Ok, there's gotta be something I didn't catch. What's influencing the frequency of light? Intuitively for me, more energy = more amplitude, but at some point in the video more energy = more frequency and I'm lost.

[@polarwolfie9028]

Increasing amplitude and increasing frequency both cause an increase in energy. Imagine a particle that’s in the way of a wave. The particle is at its highest point at the peak of a wave, and at its lowest point at the trough of a wave More amplitude means that the particle goes up higher and goes down lower. It moves more, so there’s more energy More frequency means that the particle goes up and down (oscillates) more often, so it moves more too, and hence there’s more energy

[@vasdgod]

I subscribed to this wonderful channel

[@Roberto-REME]

Outstanding video production and you did a superb narration. You presented the facts in a well-paced way and easy to understand. Really well done!

[@FD-rt3rv]

This is excellent, never have seen such a clear explanation. Thank you. Ps: the only thing missing was to explain why was there the "UV catastrophe" - maybe this could be a follow up video :)

[@Robo-xk4jm]

this channel always helps me internalize or learn a fundamental part of why something happens on something i thought i already knew alot about, for this video it was how white light from heat is simply because its hot enough to have enough combinations of different wavelengths of light for our eyes to pick up enough of those wavelengths together for our brains to interpret white, if theres anything i wish i could have it would be to see every wavelength and a brain to process them as different colors (and also a way to filter between different spectrums otherwise youd be basically blinded/overloaded with mixing colors)

[@lunagh6149]

oh God this was a masterpiece . I CAN'T THANKKKK YOU ENOUGH

[@earlspencer7863]

Ha ha ironically when they shot the movie in the hot jungle everything glowed! They had to get camera filters and hose down the vegetation to get a good shot!

[@ManSpidernater]

Thanks man, been searching for this

[@cowbats]

The visualizations and the way you explain it are perfect, thank you :]

[@atandritabhattacharyya3882]

I must say this is a great video. Being a student of Quantum mechanics I can really appreciate your effort in making this video.

[@teetman322]

1. Why does the electron by changing it's magnetic field send "ripples" or photons through the electromagnetic field? 2. How does the electron change and why does it change momentum and wave function (what is a wave funciton?)? 3. Why is the electron in the orbital, also why would it change energy if it isn't in it? 4. What defines a orbital that makes boundary for the wave functions? 5. Why would the electron change the orbital? 6. Why do molecules vibrate with thermal energy? 7. Why does the specific frequency vibration stimulate the excitation(what do you mean by excitation?) of the electron in the higher orbital (why higher?)? 8. Why does the electron by returning to it's ground state produce light (also why does it return to its ground state?)? (so is the answer for the first one because it changed it's energy?) 9. How and why does the energy get transferred from a vibrating molecule to its neighbor? 8. What do you mean by the electromagnetic field wanting things to be pointed in a certain direction? (what is this force that wants to align the molecules a certain way and why?) 9. Why would the water molecule rotate when given external energy? (also how why does the energy change? what is it's nature and why is that it's nature?) 10. Why does the photon mediate a change in the electromagnetic field? 11. Why do the electrons leave the plasma and how do the detach from the molecules in that situation? 12. How do the electrons carry diverse levels of energy and how do they carry energy and in what form is that energy at all (also why are there 4 levels?)? 13. Where does the kinetic energy from colliding into each other and ions go (what form does it take?)? If there is someone kind enough to educate me please.

[@lilaclatte882]

I HAVE A QUESTION! If clouds are taken as a black body, what would be the effect on radiation? (What I think: shouldn't the radiation decrease as the clouds will absorb all of the radiation?)

[@Nanba91]

Great, simple, informative. you cant imagine how grateful I am. THANK YOU

[@kronigen]

this channel is about to blow up real soon for sure. btw great explanation, you earned a sub

[@Nodrama92]

dude these Animations are amazing😮

[@r000tbeer]

So if i got this right, an electron will release energy in order to go toward its ground state and thus telling a photon GET TO THE CHOPPAH!

[@jeromeb4772]

This guy rly likes Arnold movies

[@anderskallberg7969]

Good video! Never heard a proper explanation before. It would be cool to learn more but I don't know where to start. Could help by directing me to where you find amazing explanations like these?

[@hjphan1030]

I am just speechless after watching this video...... Never have I seen an educational video so well made..... It's just perfect....

[@pumpkin162]

Holy sh*t . You rendered all those animations to teach us? What a legend .... I wish my Teachers were this much dedicated.

[@jaybertulus]

bremsstrahlung , not bremßtrahlung

[@profhalimboutayeb]

Nice video. A simulation of blackbody radiation using Maxwell's equations (without the concept of energy quantization): kzbin.info/www/bejne/m2jbnn-viNGCi8k Both Planck's law and Wien's law are retrieved. The theory we use is inspired by Wien's work. It is not published yet.

[@TannerLeggett-tr1ev]

thoroughly enjoyed the video......except for the cursing....didn't need that AND can't use this in class now. Why was it necessary to include that language?

[@ritziesart]

Wow...How do you create these animations? they are exceptional!!

[@hummus9118]

how is this channel not more popular!! after seeing this video I thought it would have at least a few million subscribers. one of the best physics channels i’ve encountered and this is just the first video i’ve watched. keep it up, I hope that soon your channel gets the recognition it deserves.

[@techclubkey6037]

Helped understand something my professor could not. Aewsome video, Continue with the great work

[@0tiochico]

Amazingly done, can't thank you enough with this explanation. I'm currently doing a masters on this subject and this is way beyond better explained than most articles and books.

[@AbhayKumar-yi9xv]

Great video

[@yuta2349]

Omg the level of explanation is so freaking good !

[@gavenmorgan9145]

Oh man, sooo good. The animation is flawless. Great+engaging progression and revisiting of concepts and definitions.

[@Jamaadw]

About to binge the rest

[@plasma__]

I'm a little confused about the ideia that most of black body radiation is caused by the electron jumping between orbitals: wouldn't that imply that a very ionized plasma would glow very differently from a non-ionized object (even if they were at the same temperature)?

[@taslim3650]

Amazing Video, THANK YOU!

[@Buddha-Einstein]

Why can ENERGY NOT JUST TAKE the next quanta of hf as long as we increase frequency? Put the math aside, what reduces intensity at higher frequencies?

[@nasreenfatima5215]

U will go higher and higher man✨

[@heliosdelsol]

THANK YOU! I was having such a hard time visualizing this concept in my head recently while watching other videos on physics and this was by far the best "dumbed down" explanation I've seen and now I really feel like I have a strong grasp on the concept!

[@2ndAmendmentX]

I have been looking for a simple, easy to comprehend explanation of black body radiation for years, and finally found it. Nice work

[@ytashu33]

I thought i understood black body radiation, this video pushed my understanding to the next level! That too, without using jargon. THIS is how to teach. Feynman, the greatest teacher of them all, would agree. More please!!

[@thenwhoami]

Why do electrons only emit photons in their state changes when going from higher orbitals to lower orbitals?

[@Milkyshake117]

The photons are the energy being released by the electron after moving from a higher energy, higher orbital, to the lower orbital. Or something like that

[@ajinjose9280]

During the movment from higher to lower orbitals it is releasing the energy which it attained during the transition from lover orbit to higher ones .it is attaining the energy by vibrating.the vibration can be coursed by heat energy (by the law of conservation of energy energy cannot be created or be distroid it can be changed in to one kind to another).so here the heat energy changes into kinetic energy of the molecules/atom and it vibrates and that kinetic energy is absorbed by the electron by jumping to the higher order.after this the excited electron will go back to the lower orbital to maintain the stability of the atom/molecule so it releases energy in the form of photon which is in a large quantity seen as light

[@Ghryst]

This is an excellent explanation of "the most successful theory ever devised by humans". Also, "the most successful theory ever devised by humans" predicts that the universe should double in size every 0.000,000,000,000,000,000,000,000,000,000,000,000,000,000,1 microseconds. Observations show that it doubles in size every 10 million years. but thanks for explaining it in such basic term s that iq-challenged people are going to swallow it up wholesale. i mean, to keep saying this is is a successful theory, is like saying playdough makes excellent lego blocks, just because you can jam it into the right shape now and then....

[@muneebfiaz2347]

maaaannnnnnn youre awesome

[@Linus-nq2op]

It's called Bremsstrahlung, in this case 'ss' cant be replaced with ß because each s originates from a different word (Brems -> bremsen = braking, decelerating and Strahlung = radiation), and because they arent pronounced together (first s is pronunced like an unvoiced s, the second one like 'sh', also unvoiced)

[@smileyp4535]

FINALLY omg I have been wondering FOR AGES exactly what black body radiation is and why it's called that, it's because the light from the object (whatever color it may be) we are referring to is ONLY coming from the object and not anywhere else and almost always from heat. But thwn do LEDs have black body radiation because of how they glow? I know flouresence wouldn't count because the light emitted is from uv light hitting it, correct? Or no?

[@marcusrauch4223]

DISCLAIMER! „Bremsstrahlung“ is written wrong. The ß letter is only used as a sharp s after a long vowel. It is not used s a replacement for ss, which is used as a sharp s after a short vowel, or happens to appear when two words are combined, the first ending with an s and the next starting with another one. But other than that, great video. I learned about sources for black body radiation I wasn‘t aware of.

[@gutspraygore]

The best thing about free electrons is that they cost nothing! Ok... I'll show myself out. Something that has always bothered me is how movies or TV shows portray gold melting like chocolate. Gold doesn't melt at a temperature where it isn't glowing red or orange. So, when Khal Drogo melts his gold belt in an iron pot, not only would the pot be glowing, but also the gold... and he would need coal and a good bellows to stoke the fire. Chocolate always wants to melt. It's only marginally better than ice at staying solid. Even in cold places, it'll turn to liquid as soon as it touches your skin. It's why it's difficult to transport. Gold needs more encouragement. Thanks for the video. A lot of great work was put into it. I love channels like this!

[@hydrokinesis9748]

So what does absorption of light mean in the context of an object? What I'm getting from this is that photons are a symptom of a reactive and perpetual change in electromagnetic fields, so when they collide with an absorbing body, are the electromagnetic changes just absorbed by that object and transferred as kinetic energy? I assume I'm lacking a lot of things, but am I just misunderstanding stuff?

[@mishrashivaji4992]

Now my concept has cleared thank you

[@algorithms_mit]

Bhai aapka knowledge to kamal h