Name: 【TED-Ed】你有想過來場「時空旅行」嗎？ (Is time travel possible? - Colin Stuart)
Uploaded: 2014-05-03T05:00:40.000Z
Duration: 5 min 4 s

the greatest time traveler in human history.

a total of 803 days, 9 hours, and 39 minutes.

they expected the light to travel faster.

And when the Earth was moving in the opposite direction,

Two decades later, Albert Einstein was thinking

formulated in the theory of special relativity,

standing in the middle of a train carriage,

What would Jill, standing on the platform,

And because speed is distance divided by time,

which bounce a beam of light between them?

this means the time taken will be different as well.

for people moving relative to each other.

Imagine that Jack and Jill have highly accurate watches

that they synchronize before Jack boarded the train.

During the experiment, Jack and Jill would each see

less time would have elapsed on Jack's watch,

After the plane had flown around the world,

the clocks on board showed a different time

Of course, at the speed of trains and planes,

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【TED-Ed】你有想過來場「時空旅行」嗎？ (Is time travel possible? - Colin Stuart)