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Unplugged: For Loop Fun

  • 0:20 - 0:25
    This lesson is called For Loop Fun. In this
    lesson, we'll use a number line to play a dice game.
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    Each player will roll three times
    to assign a starting value,
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    a stopping value, and our interval.
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    During each turn, we circle
    our starting value, and every value that is
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    the same number of steps forward as our interval
    value.
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    We stop circling when we get to our stopping value.
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    The person with the highest
    score wins!
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    For loops can come in handy in a lot of places.
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    If you were a
    meteorologist, you would use for loops all the time.
  • 1:03 - 1:11
    Hi, I'm Becky. I work at Able Driller
    Renewables as a wind meteorologist.
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    I forecast wind speeds for the Columbia River Gorge area, where the company owns wind farms.
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    We're trying to understand how much wind is going to be there,
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    so that we know how much power is going to be outputted.
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    We give that information to real time energy traders. They buy and sell power,
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    based on how much power we tell
    them is going to be there, in order to make sure
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    the power grid is balanced, your lights stay on,
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    and that we maximize energy we get out of our wind farms.
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    We're at the national control center for Eber Troller Renewables here in Portland,
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    and this is where we have information coming in from all our farms across the country.
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    Even the highest power computers
    today can't simulate the atmosphere everywhere.
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    In computer forecasting models, we have what
    we call a grid. Each grid point is a latitude,
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    and a longitude. We have to calculate the physics,
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    and try to figure out wind speeds, temperature, pressure, that sort of thing.
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    Since these are fairly big grids and we're doing this in a lot of points,
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    we're looping over these
    things millions and millions of times.
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    Everything I do, I'll use for loops. Here for example
    is a for loop right there.
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    When you're forecasting wind, there's so many different parameters that go into it,
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    that go into it it would be impossible for a human to sit down and do all those calculations.
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    There's so many different aspects to what's going to be affecting the wind
  • 2:56 - 3:00
    that we need a computer model in order to forecast it.
Title:
Unplugged: For Loop Fun
Description:

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Video Language:
Chinese, Traditional
Duration:
03:03

English subtitles

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