For Khan Academy Talent Search 2016. Mechanical Engineering, Thermodynamics Basics
Пікірлер: 100
@faisalmayanja14 жыл бұрын
Great job and thank you - I don't understand why my professor can't understand that we need this type of breakdown BEFORE we get into the really complex equations and theories. Now it all makes so much more sense.!
@ahmirjaxen94803 жыл бұрын
pro tip: watch movies at Flixzone. Been using it for watching loads of movies recently.
@franklinalonzo36573 жыл бұрын
@Ahmir Jaxen Definitely, have been using Flixzone for months myself :)
@brixtonalijah29523 жыл бұрын
@Ahmir Jaxen Yup, been using Flixzone for months myself :D
@HawkGTboy3 ай бұрын
Your professor knows what he’s doing. He wants to weed out the people who can’t conceptualize this stuff on their own.
@aronbriggs77836 ай бұрын
Omg 7 years later. This helped me so much ty 😊
@maanasmanesh7073 жыл бұрын
its so clear to me now whilst i'm studying for my thermo exam. Thanks a ton!
@maxmorch-monsted26563 жыл бұрын
Watching this 5 years later in the UK has actually saved me thank you
@julialin12313 жыл бұрын
Love that this random video is still helping people! Good luck on your exams!
@joshuacharlery58264 жыл бұрын
It makes so much fricking sense now!!! Holy Cow! Somebody please give that girl a sponsor! Geez!
@joshua70155 жыл бұрын
Adiabatic means that no heat transfer occurs. Entropy is constant ONLY in a reversible, adiabatic process but not in an irreversible one.
@ishtiyaqimthiyazАй бұрын
Ahh I was looking for more videos on how this like the calculations too. I finally understood through your video. I know 7 years is a long time, but I would definitely watch to learn.
@IvertyNgweshe5 ай бұрын
Julia you've helped me couz this wasn't making sense to me but now I will become good at it thanks ❤
@Limiiit6 жыл бұрын
Im also studing mechanical engineering and this helped me so much!! thanks from Spain! :D
@yodartt5 жыл бұрын
I can confirm, one year after you and the symptoms remain.
@hisyamhasbi82572 ай бұрын
2024 and still going strong @@yodartt
@d4gz8609 ай бұрын
Thank you!!!!! Don't know where I'd be without this video!
@hectorfigs956 жыл бұрын
this is going to help me on my Thermo test, thank you
@adithyasamel6 ай бұрын
I have my HVAC test tomorrow and this was a life saver. Thanks a lot🤗🤗
@jktrader374 ай бұрын
Thank you Julia ! You did a great job ! This is really difficult for me to understand, but your presentation helps a lot ! All the best to you ;-)
@sonulokhandesharingexperie83534 жыл бұрын
I liked your T shirt.. Love from india🇮🇳🇮🇳❤️ I m mechanical engineer
@karldavid3661 Жыл бұрын
Thank you so much! This helped a lot I just couldn't focus well because you're so beautiful and I'm just staring at your face most of the time.
@skylerstevens88872 жыл бұрын
Not too shabby. The video wasn't fancy like a full time youtuber but the points that were important were gotten across!
@meixuanxiao27766 ай бұрын
THANK YOU Lin saved me a lot of time summarising these myself
@oxycope8821 Жыл бұрын
Muchs needed informations 4 my brains! Thx!
@mertcabilar4 жыл бұрын
Julia I'm out of your world yet thats good to see such a beautiful soul trying to give out to world what has been learnt. I'm good with philosophie and with your help, better at thermodynamics, thanks a lot :)
@jimmyjonestodd2556 Жыл бұрын
Great job
@potatostarch9363 Жыл бұрын
that "cool" at 4:45 killed me haha thanks for the vid! will definitely help me not die in my thermo exam :D
@elvinasgarov94232 жыл бұрын
23/6/2022. I have state exam in 4 days and this is so helpful. Thank you Julia Lin for clear explanation :)
@abhilashpappachan5186 Жыл бұрын
I explains lot clearly and give me a exact image . Thanks a lot for the effort taken for making this vedio
@scott8879 Жыл бұрын
Wish I knew this when I took Thermo. Great video!
@magnihugemann769918 күн бұрын
0:53 Only reversible! adiabatic processes are isentropic (ΔS=0). In typical adiabatic processes, there is no heat transfer across the system's boundaries (ΔQ=0)
@oxycope8821 Жыл бұрын
Gret exxplaniton. I lyke it! Smartness!
@suheladesilva2933 Жыл бұрын
Thanks a lot, the video was very helpful.
@chrisdesigner_3 жыл бұрын
wow! A semester covered simply, very well... Thank you!!!! :)
@valmormn7 жыл бұрын
Very nice indeed! Congrats!
@abmoustafa12 жыл бұрын
Very informative
@Indianshortsrj022 жыл бұрын
Love you mam 😍❤️
@chinonsooragwam88332 жыл бұрын
Thanks Julia, this gonna save me on my midterm 😩😩
@ScuffedF1 Жыл бұрын
You're the GOATm exactly what I was looking for !!
@o_noori1943 Жыл бұрын
This was a generally good video, and i would especially use this video for revision on key concepts!
@roronoa_zoro9115 ай бұрын
At 5:54 I think your air standard cycle represents the T-S cycle in wrong way because the T3 is the maximum temperature where as T4 is temperature less than T3 but greater than T2. By the way I like the line "Believe me I am Engineer😂😂" I know every engineer's hardships. And love your content ❤❤. And can we join in insta.
@jarrodsiebert4233 Жыл бұрын
youre a bit of a legend for this
@crazyguy200705 Жыл бұрын
Think u can try to add some explanation on the equipment involved in the carnot cycle (compressor, turbine etc.) and try to explain heat pump and refrigerator, and also try explain some concepts like why the curve for adiabatic is steeper than the isothermal line, why adiabatic processes are also isentropic etc, I did spend some time to read it up on the internet just now :) Anyway very good job and clear explanation, pronunciation is nice and clear n u seem very passionate about the subject!
@borui210410 ай бұрын
Julia, you're awesome :)
@HALEdigitalARTS5 жыл бұрын
Huge help. Thank you so much for making the video!
@ProsperityDaniels Жыл бұрын
Thank you so much. Please keep making more of these.
@joshuacharlery58264 жыл бұрын
OMG Julia! You hit the spot!!!
@AN-bw7im6 жыл бұрын
I am majoring in biological engineering but this is still really helpful. So thanks!
@amirahares24507 жыл бұрын
Thank you!!! This helped a lot. Please make more videos. Good luck with your degree and career!!!
@harmannd72702 жыл бұрын
Thank you!
@escaleetor5 жыл бұрын
Thank you for making it extra simple!
@josefbokedal4976 ай бұрын
thank youuuuuu
@kalahar5053 жыл бұрын
This helps a lot, thank you sm 🙏🏽
@rocker-zi2po6 жыл бұрын
It really helped me. thnx...from India
@subhankapadi62633 жыл бұрын
Thank you so much for the explanation!!! It was really helpful in making my understanding clear!!!!
@jeremiahbenton7907 Жыл бұрын
Great explanations!
@katherinebeltran270411 ай бұрын
slay Queen!!!
@FrengkyManurungparmedan6 жыл бұрын
I like the explanation of video..trust me I'm not engineer...😂😂😂
@mariogiraldo25337 жыл бұрын
Thanks!!! It was really useful
@e.m.176611 ай бұрын
Awesome! Thanks!!
@jamesmarvingatdula13042 жыл бұрын
thanks!
@abdelrahman5326 Жыл бұрын
Bravo Bravo Bravo !
@stargrimm6 жыл бұрын
Great video
@octopilabs3 жыл бұрын
So helpful!! Thank you!
@Elman219 Жыл бұрын
Watching this 20 mins before my exam 😂
@maartenmtr30227 жыл бұрын
thank you
@FulvioGaggioli6 жыл бұрын
You are good!
@mr.mindstorm80962 жыл бұрын
Isotherms on T-S diagram are Parallelogram to S or T?
@maxmai335 жыл бұрын
谢谢小林同学
@eheheheheheh69245 жыл бұрын
Oh my god thank you u like a angel 😘😄
@soumenmandal47603 жыл бұрын
In middle of pv diagram there will be mixture of liquid and vapour not (liquid and gas). But I like your explanation 👍
@kushagrak9605 жыл бұрын
Haha her t-shirt 😂
@vishnuvnair50886 жыл бұрын
Thank you so much. You are such a wonderful teacher❤️ Lots of love from INDIA
@naodtesfalem67584 жыл бұрын
I trust her, she is an engineer...
@ravipartapsinghrandhawa4466 жыл бұрын
thx so much loved the video!! #youmademepassthiscourse
@mikegroger67086 жыл бұрын
yes indeed
@SideswiperRocket7 жыл бұрын
hello Julia... it really helped... may u help me with some more topics...
@kabbirhossain78167 жыл бұрын
It would be more helpfull if you included the P-h diagrams too. Btw, it was helpful.
@rashedkhan67662 жыл бұрын
trust me im an engineer
@kyledonald60076 жыл бұрын
sweet vid !
@user-jg5bu9yr8k3 жыл бұрын
Женщина просто лучшая, если б не она, я бы этого гребаного Романюка и ТТД учила бы полтора года. Так же хочу сказать спасибо тиндеру за то, что я выучила английский
@philmybutup47593 жыл бұрын
Got 20 minutes before my exam wish me luck
@danemarkabad24946 жыл бұрын
Isn't it mass of vapor over mass of liquid minus the mass of vapor?
@carultch2 жыл бұрын
Quality is mass of vapor, over total mass of liquid plus vapor. We define it this way, because we want high quality steam (i.e. mostly vapor) to exit a turbine.
@tariqueanwar27327 жыл бұрын
can u plz use whiteboard so that the diagram would be clear to see!
@msrazaguru22356 жыл бұрын
hi where do you belong to
@rawizulkefliАй бұрын
Nooo i just saw this video after my exams 😭
@tomylim60226 жыл бұрын
AWESOME!!! Btw did you win? lol
@JohnnyJr3962 жыл бұрын
Thank you. I’m having a hard time with entropy. Can anyone tell me what constant entropy means? Thanks
@carultch2 жыл бұрын
The short answer is that entropy is a measure of the disorder in a system. A process happening with constant entropy, means a reversible process with no heat transfer. Idealized processes that expand and compress fluids, are examples of constant entropy processes. That is an oversimplified explanation, but the idea is that time's arrow always points to either an increase in entropy, or constant entropy. You cannot destroy entropy; you can generate it, keep it the same, discard it to your surroundings, or bring it in from your surroundings, but you cannot destroy it without time running backwards. Entropy enters a system with heat transfer, and the amount of entropy is proportional to the heat transferred and inversely proportional to the Kelvin temperature at which it transfers. The formula is delta S = delta Q/T, for a constant temperature heat addition process. So an adiabatic and reversible process will have no change in entropy. A reversible process, is an idealized version of a process that doesn't destroy any entropy. The process is possible in both directions. Examples of such processes that could be reversible in the upper limit of perfection are: Motors and generators Turbines and compressors Compression and expansion of a gas in a cylinder with no heat transfer at the same time Heat transfer across an infinitesimal temperature difference Electric current through superconductors The following processes are inherently irreversible: Throttling valves Sudden expansion of a gas Heat transfer across a finite temperature difference Mixing Any process involving frictional heating or ohmic heating
@JohnnyJr3962 жыл бұрын
@@carultch thank you. That’s a lot to think about. I appreciate it!
@kennethlimjianhon2956 Жыл бұрын
btr den my swedish lecturer LOL
@manarbuqai72316 жыл бұрын
Adiabatic is not certainly isoentropic!
@carultch2 жыл бұрын
Idealized adiabatic processes are isentropic. Some adiabatic processes are not, such as a throttling valve.