Taking a smaller volume, when they could actuallyįill the container. They just all bump together in the right way to start So, things with, between 20Īnd 30 zero's of molecules. We'll be dealing with millions of millions of millions of millions of molecules. But, in real systems, we'dīe dealing with much larger than six molecules. And, this is when we're dealing with six molecules. Might just gather back into this corner of it. And, why is it irreversible? Well, there's some probability that these molecules Irreversible processes, irreversible, irreversible processes. Where you have the entropy increasing, we call these You have higher entropy, higher, higher, higher, entropy. And so, you are going to have more states. There's more possible locations, more possible orientations for it. Than when you are here, when you know that it'sįilled up the container. The particles were confined to this little section of the container, there were fewer possible states. Now, what just happened in that process? Well, when you knew that These six particles are gonna diffuse throughout the container. To look more like this, where instance, let's see, Gonna have a situation where the system is going to And then, they're eventually gonna go in this direction. Ones on the left here, they're gonna bounce off this wall. What's going to happen over time? Well, over time, the They're all bouncingĪround in different ways. Have their own individual, their own individual kinetic energy. They have some average temperature, but that means they all each We'll say this is some type of theoretical ideal closed system here. So, I have a container, and I'll make it a, I'm gonna make it a closed container. Why does this make intuitive sets? Well, the best example I can think of is just straight up diffusion. So, let's think a littleīit about this definition. The ultimate closed system, so this is a closed system, is really the universe. But, even those at some levelĪre, they're going to interact with the rest of the universe. Much better approximations of closed systems. And, in research labs, you'll see things that are And, I can even makeĪ little cover of this to show that we really So, it's not a perfect closed system, but it's a good approximation, because we're at least attempting to isolate it thermodynamically from the rest of the universe. And eventually, that heat will warm up, will be transferred to the ice, and it will warm it up. But, it's not a perfect closed system, because eventually, the heat from the rest of the universe will warm And, we could put, you know, we'd use it to maybe store ice. So, this is, and the way weĭo it is we have some type of an insulating material. We're at least attempting to thermodynamically isolate, isolate the inside of the cooler from the outside, from Probably experienced in the not too distant And, there are, it's very hard to create a true closed There could be interactions from the rest of the universe into the system. Interacting thermodynamically with its surroundings. If I were to just lookĪt the logs and the fire, that's going to be an open system. So, if I had a campfire, so I have some logs and I had my, the flame going right over here. Of open and closed systems, just so we make sure we understand that. Outside of it to interact with thermodynamically. With its surroundings, because the universe is A system that is fully contained, that's not interacting But, we could also say the entropy of a closed system only increases. And, we're really talking about the number of states that a system could take on. You into little bit more of a cosmological scale. And, each of these dots, these are not stars. The right frame of mind, I have this image hereįrom the Hubble telescope of the night sky. And, I put an exclamation mark here, because it seems like a Law of Thermodynamics, one statement of it is that the entropy of the
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