/u/Isonica's posts in /r/askscience

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If you were to hypothetically manage to turn all the lights out in a major city (ex. New York City) how long would it take to see the stars? Or would it be instantaneous?

588 upvotes

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Why don't we harness people's power by having "electrical gyms" where bicycles and treadmills are used as a method to collect energy and use it to aid in the powering of cities or schools or etc.?

4 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If you were to hypothetically manage to turn all the lights out in a major city (ex. New York City) how long would it take to see the stars? Or would it be instantaneous?	588
Why don't we harness people's power by having "electrical gyms" where bicycles and treadmills are used as a method to collect energy and use it to aid in the powering of cities or schools or etc.?	4