Note from our Content Consultant: Different branches of engineering sometimes define the first law of thermodynamics differently, depending on how work is defined. Essentially, work released from a system might be defined as a positive value or a negative value, and thus the first law can be defined as either Q-W or Q+W. Both are acceptable forms, depending on how the system is defined! We chose to focus on only one definition here to limit the confusion.
Enthalpy is something I’ve always struggled with during my thermodynamics classes and yet it can be explained so simply. I wish my teachers were as enthusiastic as those on Crash Course, because I feel burnt out with my mechanical engineering course at college and yet those videos do spark interest and appreciation for those topics in me. Thank you, dr. Shini and whole Crash Course crew!
The 3 laws of thermodynamics as I understand them: 1. You can't win, you can at best break even. 2. You can only break even at 0. 3. You can't get down to 0. Also: The 4th law of thermodynamics: "Never attempt to explain the other 3 at a first date."
I didn't understand the definition of shaft work quite there... It said, "any type of mechanical energy other than what's necessary for flow." I didn't understand the "other than" part... Isn't shaft work about propelling liquid or gas
I didn't understand the definition of shaft work quite there... It said, "any type of mechanical energy other than what's necessary for flow." I didn't understand the "other than" part... Isn't shaft work about propelling liquid or gas
I didn't understand the definition of shaft work quite there... It said, "any type of mechanical energy other than what's necessary for flow." I didn't understand the "other than" part... Isn't shaft work about propelling liquid or gas
5:47 What did you mean by that? Energy can be transferred through substance no matter what, so how can this internal energy not be able to leave the system?
Excellent video to remember the basic concepts of thermodynamics, the relationship between open and closed systems, as well as the considerations that must be made with each of them. For a person who doesn't live with calculations that involve this branch of science, it seems a good tool to start learning. The graphics seemed right to me, especially when he explained the kinetic energy with the Star Wars character.
Thermodynamics is by far the least intuitive part of my Physics class work. Though I've struggled with, I'm glad I get it now. I hope you cover thermodynamic cycles!
I've seen a few cases of the Zeroth Law of, in areas where a more fundamental law was discovered some time after the first law. What happens if, further down the line, you find an even more fundamental law?
Fun fact: matter is also a form of stored energy. That's why nukes work -- a little bit of the, say, uranium atom is converted to energy when it decays -- and why the masses of subatomic particles are measured in electrom volts. Also, heh heh, she said "shaft work."
Delivery McGee But the decaying isn't the reason why the nuke explodes. It is because the radioactive materials have uncontrolled nuclear fission, which causes tons and tons of energy to be realesed in a second, which ends up in an explosion.
This video is about: The first law of thermodynamics also known as Law of conservation of Energy, states that energy can’t be created or destroyed. And the second law states that the entropy of any isolated system always increases ( entropy is the measure thermal energy per unit of temperature) Jaqueline López UP170620
This is my Second favorite CrashCourse you guys (& gals) have ever done. (Saying something because my favorite CC is CC anatomy and physiology which has my favorite Science entertainer that I know of in it. The cat!) (ok maybe I lied about the cat being my favorite. But everything else in this comment is at least not a joke. I mean you can’t tell if I am lying. I mean This is the Internet and we’re communicating entirely through text which isn’t the most emotionally revealing medium. The most I can do to prove that I am not lying (within reason) is point out the lack of stuff to be gained form doing otherwise) _Edit: in case you want to know who I’m talking about but are to lazy to try and figure it out._ (I don’t blame you) _I’m talking about Hank._
I can't believe that half of my Thermodynamics course at the university has been summed up in ten minutes! This branch of Physics is truly one of the most important, especially for those who are studying Energy Engineering. And I think the best way to understand all the basics about thermodynamic systems is with simple examples and lots of images. The equations and all the math can be deduced from the understanding of the systems. Diego G. López Cruz UP170269 ENE04A
This topic sounds interesting, as a future engineer is one of the basic fundamentals that we must know in order to apply to many functions Daniel Alejandro Hernández De La Torre ENE04A
First, we need to focus in the zeroth law, that represents the thermal equilibrium between objects those are sharing their heat one each other, and when other object with different temperature comes to the system, the other objects give o receive the heat to the other object, until the system stay in thermal equilibrium. The first Thermodynamic's law talks about the way that the heat and the work (both, types of transition's energy) mixed to be named intern energy, another variable in Thermodynamics. This law is based in the conservation energy's principle. Alejandro Ventura UP170146
If you leave a soda in the fridge, it'll get cold. If you leave it in the sun, depending on the can's ability to absorb energy from sunlight, it will match or exceed the ambient air temperature.
Thermodynamics show up in our daily lives. Engineering is not just about getting more of what we want, but also controlling what we don't want. The zeroth law of thermodynamics, what it means to reach a thermal equilibrium, and define the first law of thermodynamics (internal energy + kinetic energy + potential energy = heat added - work done). It is important to know the forms of energy, and the types of systems (open and closed). and it is explained in a simple way as the isochoric, adiabatic and stationary processes, as well as understanding the enthalpy, make our daily life easier. Alejandra Muñoz UP170047/ ENE04A
You heard it here first, apples are making America fat. (Joking obv) As a bio-chemical researcher, I love the series as well as the many others Complexly creates. Keep it up!
Thanks to this video, we can reaffirm a little what was already known about thermodynamics. Here we can also reaffirm that we can learn to create more efficient machines for industrial processes and at the same time be able to take care of our environment and improve technology, because thermodynamics is present on all sides, everything must be in balance to be able to function. Nancy Delgado Rodríguez UP170110 ENE04A
Yes and No. At least not really: the can may heat a bit more at the beginning - as the air is constantly cooling by transmitting heat to the earth and into space (even if it is just a few atoms a time; if it wouldn't we would really fast live on a boiling planet) - but as the heat of the can surpasses the heat of the surrounding atmosphere, it begins to emmit the heat again, at some point reaching an equilibrium with its surroundings. (Btw: this is the reason criminal examiners can determine how long a (newly deceased) person is dead - because the body stops producing heat around the time of death and starts to cool down to the surrounding temperature)
This is an excellent introductory video to thermodynamics because it very simply explains things that, theoretically reading them, are a bit complex, but the girl no comment that the thermodynamics only work in a especifica moment of the time ( It worked with straight lines).
Thermodynamic has a big branch of obtain energy and is important understand the benefits than get it. The law zeroth of termodynamic is the begin of the rules from the other laws, someone described the pressure, volume and temperature like a equilibrium of the system. I know the 1st law explain about the conservation but I needed to know a little more like energy contained within the system and than the energy can move between boundaries. The 1st law has energy kinetic and the potential energy. I think is importan know this topic because I could see and understand more easy. Leslie J. Valdés. ENE04A UP170209
adolfo tadeo huerta garcia, up170690, ene04a, ing. energia. universidad politecnica de aguascalientes. termodyanmics describes how thermal energy is converted to and from other forms of energy. it is one of the main focuses of engineering. because engineer need to know how much heat or work they will get out of an engine if they put energy into it.
aren't all forms of energy ultimately kinetic in some way: light has to move, chemicals have to move, electrons have to move, quarks have to move. "things" need to move and interact basically...?
X4rrr place a test charged particle in an electrical field and it will have a potential electrical energy even if it isn’t moving. Place a ball on top of a building and it will have gravitational potential energy even if it isn’t moving. Place a zinc and copper powder separated by a barrier and they will have potential chemical energy. Heat really just is kinetic energy, but energy isn’t just motion, it is simply the capability to do work.
@@RanaKamikaze "place a ball on top..." ...surely that's motion? as in, isn't all potential energy predicated on prior kinetic energy? similar argument for "place zinc and copper..." a) "place" involves prior movement and b) surely chemical energy entails movement of electrons? similarly, even electrical fields appear to be related to the movement of subatomic particles? not my field, so no idea, but it still seems to all be movement of some sort...
That's interesting, because we can see the laws of Thermodynamics in simple things that happens every day but we don't put attention to them. Like a future engineer I see this very important, some process or machines need to be understanding (Energy like heat, like electricity, etc.) and know how solve problems. Saludos. Brandon Adheo Aldana López. ENE04A.
I know about thermodynamics is that it obviously has to do with energy, heat and work. The study of thermodynamic is very important to understand the process of when energy is transformed un to another and with it we can improve the efficiency to lose less energy in the from of heat Alejandra Mascorro UP170565 ENE04A
energy can't be created or destroyed, it can only change in form, and that change has to be in the direction of increasing total entropy. I think she said that in this video too, right? U confus? No wori, spodermen wil halp U
So if a cold can left outside obtains thermo equilibrium with the air around it. (Assuming the sun isn't pumping anymore enegery onto the planet) how many cans would it take to cool the atmosphere?
Trinity Delafuente How do you cool the cans? If you don't cool them outside of the measured system no amount (nor size nor temperature) will be enough.
fiona fiona . Okay then assuming the cans are cooled inside of a closed system (like a sealed home) and it's cooled by changing the pressure of one side of the house to another. Then the can is brought outside. (Without leaking any air from inside the home)
How big /warm is the atmosphere, how do you get the energy (won't it get very hot and inefficient inside fast?) , is humanity continuing to warm our planet? Do you know the scene in "futureama" featuring the from of an ever Lager ice block in an ocean keeping global warming in check trough this inter planetary import?
Any can of cold soda would cool the atmosphere a little assuming no more heat was being pumped into the system. A better question would be if you have an unlimited supply of sodas, say a litre per can, and you wanted to cool the atmosphere a single degree celsius, how many would it take?
Note from our Content Consultant: Different branches of engineering sometimes define the first law of thermodynamics differently, depending on how work is defined. Essentially, work released from a system might be defined as a positive value or a negative value, and thus the first law can be defined as either Q-W or Q+W. Both are acceptable forms, depending on how the system is defined! We chose to focus on only one definition here to limit the confusion.
CrashCourse 1st reply
As a material scientist, I define work as the amount of time I am getting paid for.
As a material scientist, I'd like to say that chemical engineers aren't a real thing. Don't let Tenferenzu fill you with lies.
Thanks for clearing that up.
MechEs vs ChemEs flame war?
"The Higher you get, the more potential energy you have"
Hehe
As a kid whenever I didn't want to clean my room, used to say that "entropy is the law of nature".
Enthalpy is something I’ve always struggled with during my thermodynamics classes and yet it can be explained so simply. I wish my teachers were as enthusiastic as those on Crash Course, because I feel burnt out with my mechanical engineering course at college and yet those videos do spark interest and appreciation for those topics in me. Thank you, dr. Shini and whole Crash Course crew!
Varret..... entropy also exists during a lecture
I believe in you. You got this
The 3 laws of thermodynamics as I understand them:
1. You can't win, you can at best break even.
2. You can only break even at 0.
3. You can't get down to 0.
Also: The 4th law of thermodynamics: "Never attempt to explain the other 3 at a first date."
"Lisa, in this house, we obey the laws of thermodynamics!"
That was fun
My best homer Simpson quote
I didn't understand the definition of shaft work quite there... It said, "any type of mechanical energy other than what's necessary for flow." I didn't understand the "other than" part... Isn't shaft work about propelling liquid or gas
Can you guys make crash course math? It should be from Algebra to Calculus. It would help lots of people.
Thanks.
I don’t think math would go well with Crash Course style of videos. You always have Khan Academy if you want to learn it.
Try KhanAcademy! They have tons of step-wise videos for math, science, and other topics!
No
I didn't understand the definition of shaft work quite there... It said, "any type of mechanical energy other than what's necessary for flow." I didn't understand the "other than" part... Isn't shaft work about propelling liquid or gas
The first law of Thermodynamics is that you don't talk about Thermodynamics.
Marylandbrony bravo!!!
The second law is that you don''t talk about Thermodynamics
Third law of thermodynamics is that YOU DO NOT TALK ABOUT THERMODYNAMICS
@@abhinnverma2142 and the zeroth law of thermodynamik is if you talk about it you will be killed by a demo.. shiieeeeeeeeet
I didn't understand the definition of shaft work quite there... It said, "any type of mechanical energy other than what's necessary for flow." I didn't understand the "other than" part... Isn't shaft work about propelling liquid or gas
Please do a crash course mathematics sometime soon
This wouldve been super helpful in high school. My teacher couldnt really explain this and the whole class confused by this. I totally get this now.
When I got thrown in jail no matter how long I slept on the concrete blocks my body never got warm..I use to think about that..
Slight correction: chemical reactions do not Create energy, they release energy.
I have to watch this 5x because I'm a slow learner. Hahaha 4 more to go. The beauty of video is that I can replay it and no teacher will be exhausted.
5:47 What did you mean by that? Energy can be transferred through substance no matter what, so how can this internal energy not be able to leave the system?
Adiabatic process, otherwise known as the Gandalf Process
Thermodynamics has always been my favorite part of physics
Excellent video to remember the basic concepts of thermodynamics, the relationship between open and closed systems, as well as the considerations that must be made with each of them. For a person who doesn't live with calculations that involve this branch of science, it seems a good tool to start learning. The graphics seemed right to me, especially when he explained the kinetic energy with the Star Wars character.
UP170606
Thank you, Luz!
she's a great teacher!! I love watching these videos!! this is my favorite series by crash course!!
Thermodynamics is by far the least intuitive part of my Physics class work. Though I've struggled with, I'm glad I get it now. I hope you cover thermodynamic cycles!
You guys are the best channel on RUclips! By far!
I find that setting the replay speed to 1.25 helps much with viewing this series
Good job everyone
I look forward to Crash Course Linguistics. It's an incredibly amazing discipline.
Good god that, I want to say, bookcase is giving me anxiety
Great explanation!
This is the earliest I’ve ever been.
This video perfectly summarizes my entire first Thermodynamics class in my first year of Mechanical Engineering. Great work! Keep it up!
I've seen a few cases of the Zeroth Law of, in areas where a more fundamental law was discovered some time after the first law. What happens if, further down the line, you find an even more fundamental law?
idk. the -1th law?
wonderful course that include a very broad introduction and framework about engineering .
Cengel is such a badass textbook
Every engineering course sees this. It's basics.
Heat is known to be the most devout of Holy Mother Entropy's disciples.
I️ am happy now. You included BB-8
I learned a lot. Thank you very much
I giggled at "shaft work". I am 12.
I love this series and channel in general
Very nicely Explained! Waiting for 2nd Law....
"adi{A}batos" the intonation should go at the bracketed A (source:greek) ;)
Melissa UP170777 in in my opinion this video speaks in a summarized way what is the career that we are studying
Thanks Meli, let's try to make a deeper analysis next time :)
theme music is sooo catchy
Yay loved it! Thank you!
Fun fact: matter is also a form of stored energy. That's why nukes work -- a little bit of the, say, uranium atom is converted to energy when it decays -- and why the masses of subatomic particles are measured in electrom volts. Also, heh heh, she said "shaft work."
Delivery McGee But the decaying isn't the reason why the nuke explodes. It is because the radioactive materials have uncontrolled nuclear fission, which causes tons and tons of energy to be realesed in a second, which ends up in an explosion.
That was good. I need to watch it again though. The end had me say, huh?
This video is about:
The first law of thermodynamics also known as Law of conservation of Energy, states that energy can’t be created or destroyed.
And the second law states that the entropy of any isolated system always increases ( entropy is the measure thermal energy per unit of temperature)
Jaqueline López UP170620
Thanks girl!
I’m applying most of my energy to Shaftwork
Thanks
I think this is gonna be really useful for me cuz I'm starting engineering next year
I Never Thought Physics Could Be So Interesting
This is my Second favorite CrashCourse you guys (& gals) have ever done. (Saying something because my favorite CC is CC anatomy and physiology which has my favorite Science entertainer that I know of in it.
The cat!)
(ok maybe I lied about the cat being my favorite. But everything else in this comment is at least not a joke. I mean you can’t tell if I am lying. I mean This is the Internet and we’re communicating entirely through text which isn’t the most emotionally revealing medium. The most I can do to prove that I am not lying (within reason) is point out the lack of stuff to be gained form doing otherwise) _Edit: in case you want to know who I’m talking about but are to lazy to try and figure it out._ (I don’t blame you) _I’m talking about Hank._
that intro always makes me want to look outside; I swear something is backing up in the driveway every time
I used to experience that sensation alot during the 80s.
When are you going to upload entropy and second law of thermodynamics. Eagerly waiting....
My favorite is the second!
I love your intro
I can't believe that half of my Thermodynamics course at the university has been summed up in ten minutes! This branch of Physics is truly one of the most important, especially for those who are studying Energy Engineering. And I think the best way to understand all the basics about thermodynamic systems is with simple examples and lots of images. The equations and all the math can be deduced from the understanding of the systems.
Diego G. López Cruz
UP170269
ENE04A
Great! thanks, Diego
Nice theme song!
Masterpiece of science will come in next episode. The Entropy and Second law of thermodynamics.
Zeroth
Help guys!
Why in an isochoric process (volume), WORK can be scratch out of the equation??
W=F*D
This topic sounds interesting, as a future engineer is one of the basic fundamentals that we must know in order to apply to many functions Daniel Alejandro Hernández De La Torre ENE04A
Let's try to make a deeper analysis next time, Alex.
Thank you a lot!
First, we need to focus in the zeroth law, that represents the thermal equilibrium between objects those are sharing their heat one each other, and when other object with different temperature comes to the system, the other objects give o receive the heat to the other object, until the system stay in thermal equilibrium.
The first Thermodynamic's law talks about the way that the heat and the work (both, types of transition's energy) mixed to be named intern energy, another variable in Thermodynamics. This law is based in the conservation energy's principle.
Alejandro Ventura UP170146
Thanks, Alex!
Awsome it’s just enough 😎
If you leave a soda in the fridge, it'll get cold. If you leave it in the sun, depending on the can's ability to absorb energy from sunlight, it will match or exceed the ambient air temperature.
Thermodynamics show up in our daily lives.
Engineering is not just about getting more of what we want, but also controlling what we don't want.
The zeroth law of thermodynamics, what it means to reach a thermal equilibrium, and define the first law of thermodynamics (internal energy + kinetic energy + potential energy = heat added - work done).
It is important to know the forms of energy, and the types of systems (open and closed). and it is explained in a simple way as the isochoric, adiabatic and stationary processes, as well as understanding the enthalpy, make our daily life easier.
Alejandra Muñoz
UP170047/ ENE04A
Ok, Ale!
Disheartening to see little views and likes for such gold content but dressed up cat videos slaying million views.
They have 7.9 million subscribers though....a lot of those 1 hit wonders have millions of views on 1 stupid video and you never hear from them again.
You heard it here first, apples are making America fat. (Joking obv)
As a bio-chemical researcher, I love the series as well as the many others Complexly creates.
Keep it up!
excellent
Energy is stored in an "Arrow"? I think they meant energy is stored in the stretched string and the torque of the bow.
Man this reminds me of 2nd year uni
Thanks to this video, we can reaffirm a little what was already known about thermodynamics. Here we can also reaffirm that we can learn to create more efficient machines for industrial processes and at the same time be able to take care of our environment and improve technology, because thermodynamics is present on all sides, everything must be in balance to be able to function.
Nancy Delgado Rodríguez
UP170110
ENE04A
Thanks, Nancy!
The Thermodynamic Diet: Chater One, eat less potential energy rhan your body will actually use over the day. Book complete.
To be fair. If you leave a can of soda out in the sun, it will heat up more than the air around it...
Yes and No. At least not really: the can may heat a bit more at the beginning - as the air is constantly cooling by transmitting heat to the earth and into space (even if it is just a few atoms a time; if it wouldn't we would really fast live on a boiling planet) - but as the heat of the can surpasses the heat of the surrounding atmosphere, it begins to emmit the heat again, at some point reaching an equilibrium with its surroundings. (Btw: this is the reason criminal examiners can determine how long a (newly deceased) person is dead - because the body stops producing heat around the time of death and starts to cool down to the surrounding temperature)
Engine. Engineer. 🤯
This is an excellent introductory video to thermodynamics because it very simply explains things that, theoretically reading them, are a bit complex, but the girl no comment that the thermodynamics only work in a especifica moment of the time ( It worked with straight lines).
Thank you!!
Can you explain the offside law?
At 3:00, if you left the soda in the sun, couldn't it be hotter than the surrounding air?
Thermodynamic has a big branch of obtain energy and is important understand the benefits than get it. The law zeroth of termodynamic is the begin of the rules from the other laws, someone described the pressure, volume and temperature like a equilibrium of the system. I know the 1st law explain about the conservation but I needed to know a little more like energy contained within the system and than the energy can move between boundaries.
The 1st law has energy kinetic and the potential energy. I think is importan know this topic because I could see and understand more easy.
Leslie J. Valdés. ENE04A
UP170209
Thank you, Leslie
.Amazing.
4:58 Ghengis Khan failed lol
Oo antman and wasp reference
Ah, my favvorite subject. :) Glad you are spreading the word.
adolfo tadeo huerta garcia, up170690, ene04a, ing. energia. universidad politecnica de aguascalientes. termodyanmics describes how thermal energy is converted to and from other forms of energy. it is one of the main focuses of engineering. because engineer need to know how much heat or work they will get out of an engine if they put energy into it.
Thanks, Tadeo
aren't all forms of energy ultimately kinetic in some way: light has to move, chemicals have to move, electrons have to move, quarks have to move. "things" need to move and interact basically...?
X4rrr place a test charged particle in an electrical field and it will have a potential electrical energy even if it isn’t moving.
Place a ball on top of a building and it will have gravitational potential energy even if it isn’t moving.
Place a zinc and copper powder separated by a barrier and they will have potential chemical energy.
Heat really just is kinetic energy, but energy isn’t just motion, it is simply the capability to do work.
@@RanaKamikaze "place a ball on top..." ...surely that's motion? as in, isn't all potential energy predicated on prior kinetic energy? similar argument for "place zinc and copper..." a) "place" involves prior movement and b) surely chemical energy entails movement of electrons? similarly, even electrical fields appear to be related to the movement of subatomic particles?
not my field, so no idea, but it still seems to all be movement of some sort...
That's interesting, because we can see the laws of Thermodynamics in simple things that happens every day but we don't put attention to them. Like a future engineer I see this very important, some process or machines need to be understanding (Energy like heat, like electricity, etc.) and know how solve problems. Saludos. Brandon Adheo Aldana López. ENE04A.
Thanks, Adheo!
@@Terkenwen You're welcome, Miss!
I know about thermodynamics is that it obviously has to do with energy, heat and work.
The study of thermodynamic is very important to understand the process of when energy is transformed un to another and with it we can improve the efficiency to lose less energy in the from of heat
Alejandra Mascorro UP170565
ENE04A
Thanks, Ale
PLEASE DO CRASH CROUSE ORGANIC CHEMISTRY
in one video you stated that energy can neither be created nor destroyed!!! I'M CONFUSED.
energy can't be created or destroyed, it can only change in form, and that change has to be in the direction of increasing total entropy. I think she said that in this video too, right? U confus? No wori, spodermen wil halp U
Does anyone know what software is used for the animations in these videos? Would love to know, thanks!
Heat = random, disordered motion, Work= organised, directional motion ?
Heat comes from the motion of the molecules that make up a thing. So, importantly, it's microscopic motion.
NAMASTE MAM I appreciate your work INDIAN must need such type of teacher
THANKYOU MAM
Alrighty then!
I clicked this video only because it was the first time I saw that she had brushed her hair and I was so amazed.
It's like I'm in the Bizarro world.
i prefer w to be positive and represent the work dont on the system but just a nitcpick
Anyone have a good textbook recommendation for self-study of these topics?
Try Feynman lectures.
Love.
Hi, does anyone know what animation program is being used to create these animations? Thank you
"You might store energy for later as fats " Well I guess keep storing too much as fats ....but is energy less da whole day
Wow, this felt more than just a bit rushed.
Roman siphoning circ 100 bce
She so smart and fine
So if a cold can left outside obtains thermo equilibrium with the air around it. (Assuming the sun isn't pumping anymore enegery onto the planet) how many cans would it take to cool the atmosphere?
Trinity Delafuente
How do you cool the cans? If you don't cool them outside of the measured system no amount (nor size nor temperature) will be enough.
fiona fiona . Okay then assuming the cans are cooled inside of a closed system (like a sealed home) and it's cooled by changing the pressure of one side of the house to another. Then the can is brought outside. (Without leaking any air from inside the home)
How big /warm is the atmosphere, how do you get the energy (won't it get very hot and inefficient inside fast?) , is humanity continuing to warm our planet?
Do you know the scene in "futureama" featuring the from of an ever Lager ice block in an ocean keeping global warming in check trough this inter planetary import?
Any can of cold soda would cool the atmosphere a little assuming no more heat was being pumped into the system. A better question would be if you have an unlimited supply of sodas, say a litre per can, and you wanted to cool the atmosphere a single degree celsius, how many would it take?
Still I don't understand what enthalpy is?