Understanding Thermal Radiation
Вставка
- Опубліковано 27 вер 2024
- Get access to my bonus video Understanding Dimensional Analysis on Nebula - nebula.tv/vide....
In this video we'll take a look at thermal radiation, one of the three modes of heat transfer along with conduction and convection. We'll start by covering electromagnetic waves, the Stefan-Boltzmann law, black bodies and emissive power. We'll then talk about emissivity, absorptivity, transmissivity and reflectivity, as well as view factors, all key concepts for being able to calcualate the radiative heat transfer between surfaces.
---
The Efficient Engineer is a channel aimed at mechanical and civil engineers. The mission is to simplify engineering concepts, one video at a time!Follow me on Twitter: / efficiengineer---if you would like to support the channel, please consider becoming a Patron - / efficientengineer . This will allow me to create more high quality videos covering a range of engineering topics.
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.
I like your videos very much...they help so much to get strong concepts.
@The Efficient Engineer What software do you use to make the videos?
Where is your next video? I hope it's engineering drawings.
Have you stopped making videos for this channel??
Nope! Next video on Tuesday!
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.
where r u from
Its unbelivable how these videos drop just at the instant you need them. Thank you so much!!!
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.
Mic
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).
@@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
Exactly dude I was in between ch of radiation it’s at the right place at the right time
You deserve a million subscribers man. Before going to the nitty gritty, watching your videos for the overview always helps
Your visuals makes it easier for us to understand. Thanks 🙏
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
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
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!
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.
@@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.
Even you don't know how much easy u make the topic understandable. Please never stop uploading new topics
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
alright, this was one of the best science videos i've ever seen
Veryyy helpful! Especially when I have a Thermal Eng. exam in a couple of days. Thank you so much for these insightful videos.
This Video is One of the Best Pieces of
Actual Content I have Watched. 😊👍🏽
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!
literally don't have words.......the way you explain is unmatchable and unbeatable
Whoever made animations for this video did a great job.
Thank you for making these videos!
They are the best explained I've ever watched
Best animated video on thermal radiation with proper explanation. Thanks a lot.
For conceptual understanding of topics your channel is outstanding
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 UA-cam... Please we need it badly...
Now I see how and why there are big challenges in designing future spaceships with powerful nuclear reactors. Thank you for this video.
@@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).
Perfect explanations.
I love how you leave room for the information to seep in before moving on 👌.
Just as I'm working on a thermal radiation problem. This helped me visualize this topic so well. Thank you!
There are extra blankets in the closet. Visualizing warmth will not make you any warmer. NFW.
WHAT! I have an exam on this soon. What a good timing!
You're a beautiful teacher of principles and content, thank you
Such a great video. The concepts are explained from the ground . Thanks
this channel is a gold mine
It’s very efficient to Learn from your video, it summarise all concept or build a physical understanding of topic
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
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❤
Clear and concise. Not rushed.
I like it.
This colors... this animations... PERFECT!!
Thnx a tonne! I was learning this from Bk Dutta and was finding it very difficult to visualize. You've saved my life!!
Another MASTERPIECE educational video from this channel. Thank you.
Please keep doing these videos, they are really great
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.
"by being carried along within moving matter : transportation"
also known as 'convection'
@@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.
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 🤩
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.
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
@@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!
Amazing video. If only it'd been uploaded back when I was in high school 😅
Please do some videos on Fluid Mechanics.
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 🙏
Stefan Boltzman is one of the most counter intuitive laws in physics.. It begs the question, how can a measure of energy flow be proportional to Temp to the 4th power when Temperature itself is a measure of internal energy. This needs to be explored in more detail.
There is nothing counter intuitive there. High temperature body emits faster energy. The body cools down as it releases energy and therefore the temperature drops and energy flow becomes slower. Regarding the 4th power temperature, the formula can be derived by integration of the equation of Max Placnk black body radiation curve.
Perfect! Exactly what I wanted right now! Thank you so much, your videos are always amazing. 👍👍
Great channel for revision.
WE can wait for such type of content... keep it up sir.... 😄
Excellent video. Hats off to your channel. This channel will get millions of subscribers I bet
This was another great video. It would be cool if you could cover convection and conduction as well:)
Best channel ever
Awesome video, my new favorite refresher
thank you so much, this video is brilliant
As always superb. Can you please make video on acceleration and velocity analysis of mechanisms.
Should make one on CFD
Thank for great video of heat transfer by radiation.
you summarized all the stuff i need thank you so much 😍
A great feeling to learn physics... thank you for the team...
Amazing work
Please do a video on explaining more fluid mechanics concepts..Where one need visual explanation for clarity about the topic.
Hope you do ❤️
Yes,
It includes ASME has chart on that
Can we have an amazing video just like this on convection?
may be you can make 1 more convection to complete 03 heat transfer modes :D
الفيديو رائع وهو من أفضل ما وجدت عن هذا الموضوع.
ولكن عند 12:31 هناك خطأ في المخطط في (L/R1) والصحيح (R1/L).
You should do heat transfer series!!! As always, your video is awesome!!!
Great explained..!!
perfect heat transfer explanation...hope more elaboration with thermal/cold bridge..conductivity...big thanks
Watching your videos is like learning a new battle style (Yakuza 0)
i have been waiting for too long
Thanks a lot for good informative video for us,
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.
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.
I didn't knew about the effectiveness of Wein's displacement law!! Although Its questions were the easiest one to do.
Very good video. Could you cover up more topics on heat transfer?
Amazing Amazing Amazing work, Bravo!
Your videos are awesome! You should make one on compressible flow
Truly a great video like always.
Really nice and well explained video. Kindly make one video on radiation with participating medium.
which software you use for animation😅
Great explanation
I've learned all of these stuff 3 years ago, I forgot 80% of them already. Not sure why its included in the civil engineering course at my uni though.
yup idk why it appears on my hydrosystems engineering?
would be intresting to test it properly :)
Please do video on convection also
Please make a video on classic Thermodynamics
Plss upload your videos at least 1 in a weak.....plss..plsss.plssss..plss....
I am from india.....i loved ur content
Thanks
Thank you
Love the videos. Can you do something with geotechnical engineering (theory of earth pressure, etc.)?
This was interesting and well produced content; however, it would have been useful for you to describe *why* bodies emit thermal radiation and not just a description of how much.
@@400_billion_suns Exactly.
Well explain thank you
Great video💪🏿
Awesome 👍. Very detailed
3:05 what's that equation? the Q= A and something and T⁴. and also can anyone give a summary of the laws he mentioned? my brain can't comprehend this much scientific power!!!
Google's AI is incredible. The other day, it was guessing something from the subconscious, and putting up a video for me to see. Today, it is the same thing, but the topic is different.
*Whispers* It's because you are in the Matrix and Google AI actually is directly connected to you brain *End whispers*
9:24 perfect
loved it!
I love your videos! Thank you so much
Excellent. Where were you 45 years ago?
Thanks
Greate,well explained ,thanks
beautiful.
This knowledge is radiating into my mind😅
Excellent.🤩
Sir,
Please make a video on understanding Geo technical engineering terms such as void ratio, porosity etc
please upload video based on stem, its types, its T-S diagram, steam tables, etc . I really need to understand it, please help.