Understanding Thermal Radiation

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  • เผยแพร่เมื่อ 22 ธ.ค. 2024

ความคิดเห็น • 303

  • @TheEfficientEngineer
    @TheEfficientEngineer  3 ปีที่แล้ว +48

    Thanks for watching! Remember you can catch the bonus video Understanding Dimensional Analysis over on Nebula - nebula.tv/videos/the-efficient-engineer-understanding-dimensional-analysis.

    • @swayambhun.chakraborty463
      @swayambhun.chakraborty463 3 ปีที่แล้ว +1

      I like your videos very much...they help so much to get strong concepts.

    • @87osvald
      @87osvald 2 ปีที่แล้ว +1

      @The Efficient Engineer What software do you use to make the videos?

    • @samdisum6414
      @samdisum6414 2 ปีที่แล้ว +1

      Where is your next video? I hope it's engineering drawings.

    • @dave84111
      @dave84111 2 ปีที่แล้ว +1

      Have you stopped making videos for this channel??

    • @TheEfficientEngineer
      @TheEfficientEngineer  2 ปีที่แล้ว +1

      Nope! Next video on Tuesday!

  • @nepps_
    @nepps_ 3 ปีที่แล้ว +336

    Its unbelivable how these videos drop just at the instant you need them. Thank you so much!!!

    • @idealthinker101
      @idealthinker101 3 ปีที่แล้ว +8

      I can't express how true you are 😱
      Even I also needed this video today only !
      'Cause today my teacher delivered an intro lecture to Thermal Radiations and Blackbody.
      And asked us to prepare for them in advance.

    • @paradhoax
      @paradhoax 3 ปีที่แล้ว +2

      Mic

    • @LiborTinka
      @LiborTinka 3 ปีที่แล้ว +2

      That's because you count the hits and not the misses :-) For hundred videos that didn't drop just right you picked the one that did. It's normal we all do that - brain is basically a discriminative detector with oversensitivity to certain features (e.g. faces).

    • @Jack-cx8tj
      @Jack-cx8tj 3 ปีที่แล้ว +2

      @@LiborTinka But it’s very consistently perfectly timed for this channel’s videos, and he doesn’t have hundreds of videos, could be because they are releasing videos based on a common engineering curriculum

    • @krishpandey9725
      @krishpandey9725 2 ปีที่แล้ว

      Exactly dude I was in between ch of radiation it’s at the right place at the right time

  • @ingGS
    @ingGS 10 หลายเดือนก่อน +8

    One of my favorite TH-camrs ever. His videos cover essential topics in short time without leaving out important aspects of it.

  • @beatofmysteps
    @beatofmysteps 3 ปีที่แล้ว +25

    holy fuck... i got goosebumps when he said "this is why object glow when heated."
    i've never questioned why hot object tend to emit visible light.

  • @collegevibes12
    @collegevibes12 2 ปีที่แล้ว +30

    Your videos are always a life saver come exam time. It's remarkable that you're able to explain these complex concepts better in 17 minutes than most professors can in weeks of lectures. Thank you!!

  • @arifibrahim590
    @arifibrahim590 2 ปีที่แล้ว +64

    You are an absolute godsend to all engineering students as 3blue1brown is to the mathematics community. These videos give the perfect overview for concepts that are initially hard to grasp with amazing animation and clear explanations.

  • @sadatiqbalpriom7389
    @sadatiqbalpriom7389 2 ปีที่แล้ว +15

    You deserve a million subscribers man. Before going to the nitty gritty, watching your videos for the overview always helps

  • @ashutoshsuman9473
    @ashutoshsuman9473 3 ปีที่แล้ว +21

    Your visuals makes it easier for us to understand. Thanks 🙏

  • @nonamex3052
    @nonamex3052 2 ปีที่แล้ว +7

    Your videos are a life saver for an engineering student like me. Before I even read lecture slides I check if you have a video on the topics, you truss and material sciense videos are amazing. Pls don't stop and thanks you

  • @alexdagios28
    @alexdagios28 3 ปีที่แล้ว +9

    one of the most pleasent animated videos I 've ever seen, as an electrical engineer, i'm not very familiar with transfer heat concepts, but your video made it all very clear! amazing!

    • @melaniecotterell8263
      @melaniecotterell8263 2 ปีที่แล้ว

      I haven't felt the same about heat since I learned that it was an electromagnetic wave. And I thought it was heat. It just doesn't feel the same anymore.

    • @RaviBRUH
      @RaviBRUH 2 ปีที่แล้ว +1

      @@melaniecotterell8263 Heat can be transferred in primarily 3 ways Conduction, Convection and Radiation and in Radiation only it is transferred as an EM wave and in other two cases it is different.

  • @shmkrar1153
    @shmkrar1153 2 ปีที่แล้ว +4

    I wanted to learn 'what a blackbody is' when I clicked on this video. This video blew my mind away & I enjoyed every second of it. And oh yes, I also found the answer to my question

  • @hamza_ME_
    @hamza_ME_ 3 ปีที่แล้ว +18

    You are bringing a revolution to Engineering Academics and I feel I am fortunate to be alive in this era of revolution.
    Our successors are going to be so much lucky, we aren't less tho.

  • @arun-lg8cl
    @arun-lg8cl 3 ปีที่แล้ว

    literally don't have words.......the way you explain is unmatchable and unbeatable

  • @bobvines00
    @bobvines00 3 ปีที่แล้ว +64

    Nice video and well explained. I wish this had been available back in the stone age when I was learning this.
    Also, I wish there was a way to give a "thumbs up" & comments for your Nebula videos like the "Understanding Dimensional Analysis" video you mentioned -- it's quite good. I remember learning & using it a lot in college and at work too.

  • @saturn7699
    @saturn7699 ปีที่แล้ว +3

    I have no words to describe how good this video was. This channel is an absolute 💎 . Thankyou 💟

  • @alaminparves6926
    @alaminparves6926 ปีที่แล้ว

    Even you don't know how much easy u make the topic understandable. Please never stop uploading new topics

  • @staircasefunction9124
    @staircasefunction9124 3 ปีที่แล้ว +3

    Dude I really appreciate your work. It doesn't matter to me what topics you cover in your videos but they're very easy to understand and interesting.
    Thank you

  • @Exist64
    @Exist64 3 ปีที่แล้ว +4

    Finally more thermodynamics, thank you!

  • @hyeloque3537
    @hyeloque3537 3 ปีที่แล้ว +2

    As always this channel releases video's on the exact topic i am currently studying days before finals. Great content!

  • @akshaychilwal7003
    @akshaychilwal7003 3 ปีที่แล้ว +34

    Whenever I watch ur channel, I feel like why the heck did I not find u during my college.

    • @XxSteamStreamxX
      @XxSteamStreamxX 3 ปีที่แล้ว +3

      What i find really ironic, is that this channel seems to upload the exact topics I'm covering in my classes as they go up. I just got to the radiation portion of my heat transfer class last week.

  • @siddharthmallbishen2115
    @siddharthmallbishen2115 3 ปีที่แล้ว +1

    This video really cleared my concepts. A heartiest thanks to the team members of this channel.

  • @peckdec
    @peckdec 2 ปีที่แล้ว

    These are honestly the best science videos in youtube.

  • @toninhosoldierhelmet4033
    @toninhosoldierhelmet4033 2 ปีที่แล้ว +1

    alright, this was one of the best science videos i've ever seen

  • @johnnydoe3603
    @johnnydoe3603 2 ปีที่แล้ว +1

    This Video is One of the Best Pieces of
    Actual Content I have Watched. 😊👍🏽

  • @Asmomin
    @Asmomin ปีที่แล้ว

    For conceptual understanding of topics your channel is outstanding

  • @niloysarkar4640
    @niloysarkar4640 2 ปีที่แล้ว

    Best animated video on thermal radiation with proper explanation. Thanks a lot.

  • @AJHS369
    @AJHS369 2 ปีที่แล้ว +1

    Thank you for making these videos!
    They are the best explained I've ever watched

  • @andrewbetz535
    @andrewbetz535 3 ปีที่แล้ว +2

    Your channel is a blessing. Such beautiful animation, and simple straightforward explanations. Wish I could subscribe twice

  • @ishanpoudel5999
    @ishanpoudel5999 3 วันที่ผ่านมา

    Totally crazy sir!!!
    This video is worth a months of Radiation lecture !!!!!

  • @LiborTinka
    @LiborTinka 3 ปีที่แล้ว

    Whoever made animations for this video did a great job.

  • @lyall3000
    @lyall3000 2 ปีที่แล้ว

    Thanks

  • @tanujkumar1576
    @tanujkumar1576 3 ปีที่แล้ว +1

    Just as I'm working on a thermal radiation problem. This helped me visualize this topic so well. Thank you!

    • @melaniecotterell8263
      @melaniecotterell8263 2 ปีที่แล้ว

      There are extra blankets in the closet. Visualizing warmth will not make you any warmer. NFW.

  • @FirstSword-o6f
    @FirstSword-o6f 9 หลายเดือนก่อน

    Perfect explanations.
    I love how you leave room for the information to seep in before moving on 👌.

  • @tylerdurden1911
    @tylerdurden1911 3 ปีที่แล้ว

    this channel is a gold mine

  • @traviswebster4622
    @traviswebster4622 9 หลายเดือนก่อน

    You're a beautiful teacher of principles and content, thank you

  • @physicslover1950
    @physicslover1950 3 ปีที่แล้ว

    I wax studying heat transfer by radiation from text book.... It took me 2 days to complete the chapter with still unclear concepts .... You made the video on the exact time and cleared all concepts in 15 mins... Beautiful... 💖💖💖💎💎💎💐💐💐.... I will be very thankful to you if ypu post ypur video of dimensional analysis here on TH-cam... Please we need it badly...

  • @whatispraveen
    @whatispraveen 3 ปีที่แล้ว +2

    Such a great video. The concepts are explained from the ground . Thanks

  • @jamegumb7298
    @jamegumb7298 3 ปีที่แล้ว

    Clear and concise. Not rushed.
    I like it.

  • @courage936
    @courage936 3 ปีที่แล้ว +4

    What a coincidence, I just decided to learn about Quantum mechanics for fun, and this video is uploaded within hours, the graphics are so beautiful too!

  • @yusufkor5900
    @yusufkor5900 3 ปีที่แล้ว

    This colors... this animations... PERFECT!!

  • @DNO1337
    @DNO1337 3 ปีที่แล้ว +2

    WHAT! I have an exam on this soon. What a good timing!

  • @vaibhavgupta8726
    @vaibhavgupta8726 ปีที่แล้ว

    It’s very efficient to Learn from your video, it summarise all concept or build a physical understanding of topic

  • @aaaaaaaaaaaaaaaaaaaaaaaaaa1992
    @aaaaaaaaaaaaaaaaaaaaaaaaaa1992 2 ปีที่แล้ว

    Thank you. This is a bit advanced for me in high school but i didnt understand my book. This helped make my understanding deeper. I like this

  • @ritikpatel6520
    @ritikpatel6520 3 ปีที่แล้ว +2

    Please increase your rate of uploads. The world needs many more such type of quality videos.

  • @alitahaakpnar2863
    @alitahaakpnar2863 6 หลายเดือนก่อน

    Veryyy helpful! Especially when I have a Thermal Eng. exam in a couple of days. Thank you so much for these insightful videos.

  • @MsBoss98
    @MsBoss98 2 ปีที่แล้ว +1

    This is basically a nice video summary of the radiation chapter in incropera fundamentals of heat and mass transfer 😅Very usefull!!

  • @alexandreboulch5455
    @alexandreboulch5455 3 ปีที่แล้ว +3

    Awesome video as always! Thank you so much for this great work!
    I would just precise that the EM wave do not only follow straight lines within mediums, which explains mirages for instance. And that there is at least a fourth way the heat can be transfered between objects, which is by being carried along within moving matter : transportation.

    • @darylh8657
      @darylh8657 3 ปีที่แล้ว

      "by being carried along within moving matter : transportation"
      also known as 'convection'

    • @alexandreboulch5455
      @alexandreboulch5455 2 ปีที่แล้ว

      @@darylh8657 I meant solid matter . I think convection is a term only used for fluids. For instance an ablative thermal protection on a re-entry vehicle. Small solid bits would detach, moving the heat they carry away from the spacecraft.

  • @ufDtvvyhR
    @ufDtvvyhR ปีที่แล้ว +2

    thank you for this great video!!! helped me so much

  • @rishivardhan9147
    @rishivardhan9147 3 ปีที่แล้ว

    Thnx a tonne! I was learning this from Bk Dutta and was finding it very difficult to visualize. You've saved my life!!

  • @tnk.2033
    @tnk.2033 3 ปีที่แล้ว +1

    Please keep doing these videos, they are really great

  • @vamsikrishna-wj5zp
    @vamsikrishna-wj5zp 3 ปีที่แล้ว

    U r the best I HV ever seen in my life like u ,all semester lessons in less than 20 min wow, take a bow 🙏

  • @dominicestebanrice7460
    @dominicestebanrice7460 ปีที่แล้ว

    Another MASTERPIECE educational video from this channel. Thank you.

  • @TheUglydandy
    @TheUglydandy 3 ปีที่แล้ว +1

    Now I see how and why there are big challenges in designing future spaceships with powerful nuclear reactors. Thank you for this video.

    • @TheUglydandy
      @TheUglydandy 3 ปีที่แล้ว

      @@400_billion_suns Yes, I meant that the material of the radiators (its ribs) has to be both emissive and reflective, in order to reflect heat from the neighbor radiators (otherwise - a large and, presumably, a heavy sphere).

  • @pranjalsinha2131
    @pranjalsinha2131 2 ปีที่แล้ว

    I am highly impressed by this TH-cam channel and look forward to more uploads!
    Love this channel :D

  • @arpitgami3522
    @arpitgami3522 3 ปีที่แล้ว +1

    Great explanation. Every second of the video is finely crafted , all the visuals are so perfect !!! Wow !! 👏Thanks for providing such high level content. Just Fabulous 🤩

  • @gwyn.
    @gwyn. 3 ปีที่แล้ว +1

    It sucks that this channel didn't exist when I was in school. Else I probably would be an engineer by now. lol
    Great channel, keep it up.

  • @otavioalmeida6638
    @otavioalmeida6638 3 ปีที่แล้ว +1

    Great video. Coincidentally started to review radiation for my thesis today. Came in as a great motivator :)

  • @nustclips248
    @nustclips248 3 ปีที่แล้ว

    Excellent video. Hats off to your channel. This channel will get millions of subscribers I bet

  • @shrutisharma2325
    @shrutisharma2325 3 ปีที่แล้ว +1

    Perfect! Exactly what I wanted right now! Thank you so much, your videos are always amazing. 👍👍

  • @sanchitatripathi7240
    @sanchitatripathi7240 ปีที่แล้ว

    Sir please start making vedio . Your style of explaining is just amazing. I don't know how to express it in word's but really your vedio helps us a lot❤

  • @SniperGangRaRa
    @SniperGangRaRa ปีที่แล้ว

    Awesome video, my new favorite refresher

  • @priyansutank
    @priyansutank 3 ปีที่แล้ว +2

    Hey, now I'm doubting. How do you know that next week I have an exam on Heat Transfer...!!!
    Well done bro... A truly exceptional work from a mechanical engineer for mechanical engineers.

    • @melaniecotterell8263
      @melaniecotterell8263 2 ปีที่แล้ว

      This video will not help you calculate answers to heat transfer problems. That is why you have a 15-week intensive curriculum in one topic of study. He needs to do a video on Thermodynamics which is nothing like heat transfer Thermodynamics is confusing, How and why a gas heats when compressed. That's most of it

    • @amitosh1131
      @amitosh1131 2 ปีที่แล้ว

      @@melaniecotterell8263 sometimes, understanding how things work truly help solving a problem, because all of a sudden you understand why using a specific formula over the other and all that kind of stuff.... At least that how i feel.
      About the temperature thing, the temperature of a gas is greatly affected by 2 factors, volume and pressure,
      Tou can see it in the ideal gas law, PV=nRT...
      The more intuitive explanation is that as u compress a gas, the gas particles bump into each other more and more, which give the gas more kinetic energy which raise the temperature!

  • @hamzahal_khalaf5386
    @hamzahal_khalaf5386 2 ปีที่แล้ว

    you summarized all the stuff i need thank you so much 😍

  • @akashvvaannii
    @akashvvaannii ปีที่แล้ว

    How simple our life would be if our college profs could teach like this or just play this video in the class should be enough as well..

  • @sam08090
    @sam08090 3 ปีที่แล้ว

    Excellent Teaching. Pleasing colors. Brilliant animation. Simply awesome ❤️

  • @parkashsingh9044
    @parkashsingh9044 3 ปีที่แล้ว +1

    WE can wait for such type of content... keep it up sir.... 😄

  • @feynstein1004
    @feynstein1004 3 ปีที่แล้ว +1

    Amazing video. If only it'd been uploaded back when I was in high school 😅

  • @mengthongleng6162
    @mengthongleng6162 3 ปีที่แล้ว

    Thank for great video of heat transfer by radiation.

  • @panaderoovino6342
    @panaderoovino6342 3 ปีที่แล้ว

    amazing video, you are saving my life before my final exam!!!!!

  • @khanhhuyen8630
    @khanhhuyen8630 2 ปีที่แล้ว

    a beautiful, make sense video

  • @jeffwads
    @jeffwads 3 ปีที่แล้ว

    I am getting commercials about shaving nether regions whilst watching this great video. Talk about a mind-shift.

  • @shetty494
    @shetty494 3 ปีที่แล้ว +2

    As always superb. Can you please make video on acceleration and velocity analysis of mechanisms.

  • @kgkmurthy1961
    @kgkmurthy1961 ปีที่แล้ว

    A great feeling to learn physics... thank you for the team...

  • @jimihendrix1263
    @jimihendrix1263 3 ปีที่แล้ว

    Best channel ever

  • @sussushi
    @sussushi 11 หลายเดือนก่อน +2

    If I have a THIN hemispherical shell that is recieving heat from a source at its center, would both it's inner and outer surface be considered in area term? Does the term THIN has anythjng significant to do with it?
    Considering that for a thin sheet of charge, we consider it to be 1 surface of charge in all.

  • @johannesnm9706
    @johannesnm9706 2 ปีที่แล้ว +2

    This was another great video. It would be cool if you could cover convection and conduction as well:)

  • @tensevo
    @tensevo 2 ปีที่แล้ว

    Great channel for revision.

  • @الفاتحخير
    @الفاتحخير 2 ปีที่แล้ว

    الفيديو رائع وهو من أفضل ما وجدت عن هذا الموضوع.
    ولكن عند 12:31 هناك خطأ في المخطط في (L/R1) والصحيح (R1/L).

  • @rkye3915
    @rkye3915 2 ปีที่แล้ว

    such a good video. keep it up man!

  • @KittenLee-n4z
    @KittenLee-n4z 3 หลายเดือนก่อน

    1:53
    Does thermal radiation only occur between them?
    Is it impossible for higher temperatrue bodies to emit thermal radiation through x-ray or gamma-ray?

  • @amiraliejlali8120
    @amiraliejlali8120 3 ปีที่แล้ว

    Amazing Amazing Amazing work, Bravo!

  • @juicewarrior2501
    @juicewarrior2501 3 ปีที่แล้ว

    Truly a great video like always.

  • @ahmarrehan1044
    @ahmarrehan1044 2 ปีที่แล้ว

    Great way of explanation

  • @swampsidechronicles5822
    @swampsidechronicles5822 ปีที่แล้ว

    Thank you for this video!

  • @minhhuynhthe
    @minhhuynhthe 3 ปีที่แล้ว

    i have been waiting for too long

  • @matis9783
    @matis9783 3 ปีที่แล้ว +1

    Very good video. Could you cover up more topics on heat transfer?

  • @corypeng3324
    @corypeng3324 3 ปีที่แล้ว

    Excellent video! Thank you!!

  • @quantumcomputing832
    @quantumcomputing832 3 ปีที่แล้ว

    Awesome 👍. Very detailed

  • @dbtwenty8
    @dbtwenty8 3 หลายเดือนก่อน

    thank you so much, this video is brilliant

  • @TheFailedPhysicist
    @TheFailedPhysicist 25 วันที่ผ่านมา

    Amazing video! But I'm confused on one thing. At 12:38 you say "...the total radiation that leaves surface 1 and reaches surface 2 is the product of the area of surface 1, the black body emissive power of surface 1, and the view factor from surface 1 to surface 2."
    This doesn't make sense. The units do not match :<
    J/s = (J/s)*m^2
    Edit: I wrote J = J*m^2 instead. But the units still don't match

  • @nicdeligente3252
    @nicdeligente3252 3 ปีที่แล้ว

    perfect heat transfer explanation...hope more elaboration with thermal/cold bridge..conductivity...big thanks

  • @Bobsry16
    @Bobsry16 3 ปีที่แล้ว

    Thanks for this video! This gets more complicated when you have to account for luminescence and it's options of other electron related light emission.

    • @melaniecotterell8263
      @melaniecotterell8263 2 ปีที่แล้ว

      If you're accounting for luminescense you may be cutting things a bit too close. Give yourself enough margin so you don't have to worry about that shit. When it crashes I'd hate to be the one who miscalculated the luminescense. Poor pilot didn't have enough light to navigate around the obstacles. Too much luminescense will get you a headlight ticket. Always best just to go stealth when space truckin'. Look at those stars.

  • @cloud42269
    @cloud42269 2 ปีที่แล้ว

    Amazing work

  • @engineer-x7419
    @engineer-x7419 3 ปีที่แล้ว

    Great explanation

  • @keenheat3335
    @keenheat3335 3 ปีที่แล้ว

    so hypothetically if you have a black body object moving at some constant fraction of speed of light, such that the Doppler shift effect would be big enough to be noticeable. I'm assuming the side that's getting blue shifted would appear to have higher temperature from outside observer. And the side that's getting red shift would appear to have lower temperature. So if you some how connect a heat engine from the apparent "hot" end to the apparent "cold" end, would we get a perpetual energy source from heat engine harvest this apparent temperature difference ? from the black body's own frame of reference there is no temperature difference. So no temperature difference to be harvest in this case. But from outside observer's point of reference there is a temperature difference. How to reconcile these two different points of view while still holding each frame to be accurate within their own observation stack ?

  • @socialmediashiva
    @socialmediashiva 2 ปีที่แล้ว

    Please do a video on explaining more fluid mechanics concepts..Where one need visual explanation for clarity about the topic.
    Hope you do ❤️

  • @ck1416
    @ck1416 3 ปีที่แล้ว

    1:41 Why can't higher frequency waves be produced at higher temperature? Can anyone explain to me in simple terms?
    I know this has to do with ultraviolet catastrophe, but could not understand the explanations

  • @rickshen1370
    @rickshen1370 ปีที่แล้ว +1

    so useful

  • @eduardogaldino8510
    @eduardogaldino8510 2 ปีที่แล้ว +1

    Who said that classical physics is not quantum physics ,it's there,Boltzmman,Winn,Planck! It's just physics very deep.

  • @RaphaCramer
    @RaphaCramer 3 ปีที่แล้ว +5

    I love this channel :D
    It would be nice if you cover some soil/rock mechanics