OMG! Is it possible that "entropy" is so easily understood? Or, is it, you are one great teacher? This is at least my 5th entropy video, but it is the first one actually understood. Look forward to your next video.
Ruiqi Mao i think you might wanna watch bbc wonders of universe by professor brian cox ,, you will enjoy learning entropy and other deep concepts of physics with brian
I came upon entropy when I was studying decision tree, which was part of the computer science. Everybody told me that entropy was about disorder, about how much information we could get from it. But seriously, I never understood what it actually meant, until I saw your video. I just cannot believe the fact that I understood it in about seven minutes! If I had seen your video earlier, I wouldn't need to struggle for a month to try to find the answer! Thank you, you are an amazing teacher! There's only one more thing I need to know. Shannon developed the formula of entropy decades ago. We need it to calculate the information gain when we construct a decision tree. I found out that you also majored in computer science. So is there any video about how the formula was developed, how we could use the formula to calculate the information gain?
The best thing about khan academy is that they explore and discover what is to be taught instead of telling us whats the discovery is , straight forwardly .
I would also argue that room "a" probably has more entropy than room "b" because it takes much more input of energy to keep a room clean than to keep it disorganized. That's what would always bug me when I saw this example in textbooks.
Well , i can't thank you enough , before i found this video ,i have wasted like 1 hour trying to grasp Entropy meaning from other sources and i was about to drop the whole thing xD
What about the effect of gravity on entropy. The second law of thermodynamics states: "In any cyclic process, the entropy will either increase or remain the same." Entropy is a measure of the disorder or multiplicity of a system, or the amount of energy not available to do work. For an isolated system, the natural course of events takes it to a more disordered and higher entropic state. Gravity, on the other hand, knows only attraction and therefore tends to keep things in an ordered state by keeping them close to each other and thus reducing the occupied volume as well as the possibilities of possible states, so it is could add a term to the famous Boltzmann formula being: E = K ln(W) - K f(g) where g is gravity and f() a function proportional to g and also f(0)=0. Perhaps its effect is so weak that it is very difficult to detect it. Well it's my humble opinion that it's probably wrong.
I'm confused as to what the number of states refers to as a human we could say that an unbroken vase has few configurations while a broken one has many however thats a purely human thinking style because there's no reason the vase couldn't break Just to clarify an orderly stacked pile of blocks has less entropy than that of a randomly thrown pile of blocks? but why? what is the physics that says that in configurations the orderly stack must remain an orderly stack while the blocks of the randomly thrown pile do not have to maintain their relative positions? Or to be more blunt what stops an Alien race from saying that the randomly thrown pile is actually not random but a perfect RRRR shape or whatever and thus they consider only configurations of the blocks preserving the RRRR shape?
One doubt...so entropy of larger area will alwys be greater than that of smaller area?!but what if we are observing both of them having same areas?? Then how u can say which area will have more entropy?
A girl who Asks INFINITY If clean room and messy room are Both equal in terms of area but not the same in temperature let us say that Clean room is warmer meaning the molecules moving fastly from one direction to another, more disorder more entropy however if it is Cold (messy) since it is colder the molecules moving slowly from one direction to another less entropy
agent1672 if you consider the water inside a glass as your system, then by cooling it down below the freezing point (making ice cubes), you have decreased the entropy. Notice however that it is not a closed system: you've exchanged energy (by cooling the water down) and you've made ice cubes (which are no longer part of your system)
I disagree with you when you say that a messier room doesn't have higher entroy then the cleaner room. You claim that they are just individual states. However, what you didn't consider was the fact that living organisms (like humans) have preference for some states of a system vs. other states - because of the diffirences in the consequences of having some states vs. others. Furthermore, there are fewer states that are preferred than there are of those that are not preferred. Therefore, the reason that a cleaner room has lower entropy is because the number of clean configurations is smaller than the number of messy configurations.
OMG! Is it possible that "entropy" is so easily understood? Or, is it, you are one great teacher? This is at least my 5th entropy video, but it is the first one actually understood. Look forward to your next video.
Ruiqi Mao i think you might wanna watch bbc wonders of universe by professor brian cox ,, you will enjoy learning entropy and other deep concepts of physics with brian
i dont think anyone has had such a beneficial impact on my life than sal.
I came upon entropy when I was studying decision tree, which was part of the computer science. Everybody told me that entropy was about disorder, about how much information we could get from it. But seriously, I never understood what it actually meant, until I saw your video. I just cannot believe the fact that I understood it in about seven minutes! If I had seen your video earlier, I wouldn't need to struggle for a month to try to find the answer! Thank you, you are an amazing teacher!
There's only one more thing I need to know. Shannon developed the formula of entropy decades ago. We need it to calculate the information gain when we construct a decision tree. I found out that you also majored in computer science. So is there any video about how the formula was developed, how we could use the formula to calculate the information gain?
I understood more in this 7 minute video than all the chemistry classes my teacher spent teaching this concept
I have no words. This is so well explained
I swear u r the best teacher ❤️
Best explanation so far. Thank you
The best thing about khan academy is that they explore and discover what is to be taught instead of telling us whats the discovery is , straight forwardly .
this.
I would also argue that room "a" probably has more entropy than room "b" because it takes much more input of energy to keep a room clean than to keep it disorganized.
That's what would always bug me when I saw this example in textbooks.
In room b it takes more input of energy to find a item.😅
Well , i can't thank you enough , before i found this video ,i have wasted like 1 hour trying to grasp Entropy meaning from other sources and i was about to drop the whole thing xD
Am a neuro student and this is the first time to understand "entropy" right here
What about the effect of gravity on entropy. The second law of thermodynamics states: "In any cyclic process, the entropy will either increase or remain the same." Entropy is a measure of the disorder or multiplicity of a system, or the amount of energy not available to do work. For an isolated system, the natural course of events takes it to a more disordered and higher entropic state.
Gravity, on the other hand, knows only attraction and therefore tends to keep things in an ordered state by keeping them close to each other and thus reducing the occupied volume as well as the possibilities of possible states, so it is could add a term to the famous Boltzmann formula being:
E = K ln(W) - K f(g) where g is gravity and f() a function proportional to g and also f(0)=0.
Perhaps its effect is so weak that it is very difficult to detect it.
Well it's my humble opinion that it's probably wrong.
2:01
S = kʙ Ln Ω
Is it possible to reduce entropy from the system?
Bah, you would need to add energy to make system ordered ,watch bozeman video on this matter
the best explanation
Thank you man!! a lot!!
Why is it interesting that the universe is in the state of increasing entropy? What are those interesting implications?
How about the COVID Variants. Can we analyse it using 2nd law of thermodynamics?
Messy does equal entropy !
Maybe be a little bit more clear which room has more entropy because it's a little confusing, thanks!
So Universe all the time expanding so entropy increases too? Yes.
Can u explain second lesson molecular structure of biological system
entropy is a measure of how much some energy is distributed over the particles?:0
Yes
messy != entropy
I kinda laughed here
great
I'm confused as to what the number of states refers to as a human we could say that an unbroken vase has few configurations while a broken one has many however thats a purely human thinking style because there's no reason the vase couldn't break
Just to clarify an orderly stacked pile of blocks has less entropy than that of a randomly thrown pile of blocks? but why? what is the physics that says that in configurations the orderly stack must remain an orderly stack while the blocks of the randomly thrown pile do not have to maintain their relative positions? Or to be more blunt what stops an Alien race from saying that the randomly thrown pile is actually not random but a perfect RRRR shape or whatever and thus they consider only configurations of the blocks preserving the RRRR shape?
ooooooooooohhhhhhhhh, so that's what entropy isssss
One doubt...so entropy of larger area will alwys be greater than that of smaller area?!but what if we are observing both of them having same areas?? Then how u can say which area will have more entropy?
A girl who Asks INFINITY If clean room and messy room are Both equal in terms of area but not the same in temperature let us say that Clean room is warmer meaning the molecules moving fastly from one direction to another, more disorder more entropy however if it is Cold (messy) since it is colder the molecules moving slowly from one direction to another less entropy
Dumb question:
Based on the Thermodynamic laws, how the sun will end?
• Exploding💥, or
• Getting colder 🥶?
I wish it was translated into Arabic
How can entropy be reversed?
agent1672 if you consider the water inside a glass as your system, then by cooling it down below the freezing point (making ice cubes), you have decreased the entropy. Notice however that it is not a closed system: you've exchanged energy (by cooling the water down) and you've made ice cubes (which are no longer part of your system)
+agent1672 "INSUFFICIENT DATA FOR MEANINGFUL ANSWER." -Multivac
I disagree with you when you say that a messier room doesn't have higher entroy then the cleaner room. You claim that they are just individual states. However, what you didn't consider was the fact that living organisms (like humans) have preference for some states of a system vs. other states - because of the diffirences in the consequences of having some states vs. others. Furthermore, there are fewer states that are preferred than there are of those that are not preferred. Therefore, the reason that a cleaner room has lower entropy is because the number of clean configurations is smaller than the number of messy configurations.
I think it's just a metaphor
U can watch my video to understand the concept of thermodynamic entropy
BIO Center prim sim mis eng h
Messy or Ronaldo? Ha ha ha
St pri eee is em
First? Haha. Feel like such an idiot saying that