WEBVTT

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Right now, somewhere,

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an educator is delivering
a mind-altering lesson to their class.

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I want to engage your brains in this.

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Chris Anderson: I tried to picture
how vast our Earth is.

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Logan Smalley: The lesson only reaches
the students in that room.

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What would happen
if we captured that lesson?

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It's a toothed wheel.

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LS: What if pro animators
and visualization artists

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could bring that lesson to life?

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CA: It's a common object
that literally fits one million Earths.

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It's got a bunch of notches
and a bunch of teeth.

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Fizeau's solution...

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LS: When that lesson lands,
curiosity is ignited.

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CA: It seems impossibly big.

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CA: In the great scheme
of things, it's a pinprick.

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Adam Savage: A door closes
on the light beam

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that's coming back to his eye.

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LN: Then that group of students
is one talk closer

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to being what every teacher
hopes their students will become:

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a life-long learner.

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AS: Based on the distance
between the two stations...

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CA: The quest for knowledge
and understanding never gets dull.

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AS: He calculates the speed of light
to within two percent of its actual value.

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CA: The more you know,
the more amazing the world seems.

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That's the central mission of TED-Ed

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to capture and to amplify
the voice of the world greatest teachers.

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He does this in 1849.

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CA: It's the crazy possibilites,
the unanswered questions,

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that pull us forward.

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So stay curious.