WEBVTT
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Okay, so in this problem, we're talking about
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lightning, and we're told it produces a max air
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temperature. 10 of the four Calvin while it's Reed
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. Hi. Um, and the nuclear's explosions,
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or 10 of the seven color been. So we
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want to figure out basically what color the radiation is
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from these two processes. And we want to use
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wise Displacement Law, which says that the Lambda Max
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of the emitted radiation times the temperature and units of
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Calvin looks is equal to 0.298 C was the number
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. Excuse me to 898 The double check on that
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. I don't have that constant memorized, but I
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guess it's not so bad. 8980.2 eight 98 times
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10 to the minus two kelvin meter. And then
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you want assault for Lambda so you could just divide
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both sides by the temperature. So I'll remove this
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, bring it to the other side to fighting them
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, but dividing it out. And so I'm gonna
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calculate that in the case of one, temperature equals
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tend to the four Calvin. So let's see what
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I get. I bet that this is gonna be
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I think this is gonna be visible, I guess
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, because it's lightning. So we would expect to
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see to see something in the visible spectrum. But
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let's go ahead and find out what we get.
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So plucking this into calculator on a separate screen,
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so it's kind of a four caldron. So that's
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200. Oh, I guess I could have just
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done that in my head. That's funny. Um
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, 289.8. Mmm. We'll do the next one
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in my head. T So that plane's Lambda equals
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, um, 200 89.8, um, nanometers.
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So I would say that that you be so that's
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purple. Oh, that's my lightning's purple. That's
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so interesting. Um, and then for a nuclear
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explosion who? I guess that's, um I never
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thought I would that way. That's why it's,
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um it's a ionizing radiation. So if you do
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plug in 10 of the seven here, then it's
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gonna be 70.2 89 a, uh, times 10
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to the minus nine. So then that's nano meters
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. I think that's in the X ray spectrum.
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So, um, look at yeah, 0.1 toe
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, 10 nano meters. So I'd say that that's
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an X ray