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Commit 4a11f0dd by fischerl
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added new subs

parent 7cb8c9ee
Showing with 663 additions and 0 deletions
subs/-CWjfl0DKm8.srt.sjson 0 → 100644
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"text": [
"SPEAKER 1: 6.002x is an extraordinarily fun course.",
"This course is the first course in an EE or an EECS",
"curriculum at MIT.",
"This course will help you make the big jump",
"from physics to EECS.",
"You will learn, what, all kinds of fun",
"things in this course.",
"So, for example, you will learn what's behind this.",
"What's behind the iPhone.",
"What are some of the foundational technologies and",
"cool ideas that drive this and many other fun",
"things in our lives?",
"Very useful things in our lives as well, that have",
"really been able to improve the productivity of all of",
"humankind over the past many, many decades.",
"This course also forms the foundations of",
"devices like this.",
"This is a chip photo of Intel's 22",
"nanometer multicore processor.",
"And you will learn about some basic technologies that are",
"used in building devices such as this as well."
]
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"text": [
"SPEAKER 1: OK, so this is case the V-I relationship is V",
"equals capital V. In this is it's a constant and so the",
"relationship is given by this where V is a constant at",
"capital V volts in respect to the current that is flowing",
"through the element.",
"So here are examples of a couple of elements and their",
"I-V relation."
]
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"text": [
"SPEAKER 1: OK, we are ready to begin.",
"So, as I said earlier, 6.002x will represent a big jump from",
"physics to EECS.",
"And let's just dive right into it and take a look at an",
"example of the kind of problems that we",
"might want to solve.",
"So, suppose I have a battery here that supplies the",
"voltage, v. And I connect that to a light bulb.",
"And let's say that I wish to find out the current, I, that",
"will flow through the bulb as a result of connecting the",
"light bulb to the battery.",
"Now, I don't want to find out anything else.",
"All I want to know is, what is the current through the bulb?",
"Oh, I want to remind you that as I go through various parts",
"of the course, I will point to readings in the textbook.",
"And for this material in this set of segments, you will skim",
"chapter one of your textbook.",
"The readings are also indicated in your course at a",
"glance handout.",
"So with the kind of problem we want to solve, with a battery",
"connected to a light bulb, I want to find out what is the",
"current, I, through the bulb.",
"OK.",
"So, here's my problem.",
"Now, I could do it the hard way.",
"As I've said before, we have captured the way nature is",
"through sets of equations.",
"In particular, those that relate to 6002",
"are Maxwell's equations.",
"So I'll parade a bunch of equations in front of you, and",
"don't get scared here.",
"This is the hard way.",
"This is not how we're going to do it in 6.002x.",
"I just want to show you how exciting and fun 6002 is, and",
"how simple things are.",
"But let me start by showing you how we could do it if we",
"were crazy.",
"OK, so I showed you Maxwell's equations in differential form",
"or in integral form.",
"So for example, this is Faraday's equation--",
"del cross E is minus del B by del t.",
"In integral form, it is integral E dot dl is minus del",
"phi B by del t, and so on and so forth.",
"Now I could take Maxwell's equations, and of course, you",
"can go and solve all of them somehow.",
"It would be horrendously hard.",
"But normally this is not what we do in 6002, and not what we",
"do as EECS engineers.",
"Instead, there is a much, much easier way.",
"We are going to make our life extraordinarily simple.",
"So before I show you what that method is, let me help us",
"build some insight.",
"So let's do it by analogy.",
"So supposing I have an object, and suppose I apply some",
"force, F, to the object.",
"And my question to you is, what is the acceleration of",
"the object?",
"OK, so if I ask you this simple question--",
"I have an object, and I apply a force, F, to the object, and",
"I ask you, what is the acceleration of the object?",
"I don't tell you anything else.",
"All right?",
"No more data.",
"I want you to think about how you might solve this problem.",
"What sort of questions would you ask me?",
"How would you answer this problem?",
"Let me pause here for a couple of seconds, and give you some",
"time to think about the answer before I proceed."
]
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"text": [
"SPEAKER 1: OK, let me go ahead and give you the answer.",
"In this case, I equals V divided by R is a linear",
"relationship.",
"And notice that the I here and this V here, it's linear",
"relationship.",
"And the slope of the straight line is given by 1 divided by",
"R.",
"So the resistor is one element.",
"And we have enumerable elements in EECS.",
"And another element is a voltage source.",
"A voltage source is an idealistic model of a battery.",
"Again, you can see that there's a voltage, V, and",
"current, I, that I've defined for the element.",
"And the voltage, V, the capital V written inside the",
"element, that is the voltage supplied by the element itself",
"for a typical battery.",
"It might be, for example, 1.5 volts.",
"But the properties of the element are described by its",
"V-I relation, and so this is given by capital V.",
"So notice the small v in this equation here is related to",
"the V-I for the element, while capital V, which could be one",
"1.5 volts, is the voltage supplied by the element.",
"So just make sure to distinguish between what I",
"call up variable V and I that describe through an I-V",
"relation, the element behavior with the element's internal",
"properties, such as the resistance or the voltage.",
"Much like we did with the resistor, we could also plot",
"V-I relation for the voltage source.",
"And before I show it, let me pause for a couple of seconds",
"so you could think about what it might look like before I",
"give you the answer."
]
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