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

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If I pour a line of flammable liquid on the ground and light it, can you calculate the speed at which the flame will propagate?

145 upvotes

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Do your fingerprints change with age?

7 upvotes

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Could you recover an object that crosses a black hole's event horizon if it were attached to a cable?

5 upvotes

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What is going on in your muscles when you're working out and cans barely lift a weight at the end of a set, but when you rest for a couple seconds, you can lift the same weight a couple more times?

4 upvotes

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With the age of the Earth at roughly 4.5 billion years, and the Scientific Revolution only occurring some 460 years ago, how do we know the constants we perceive as "constant" have not changed throughout billions of years?

3 upvotes

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What prevents a nuclear bomb from causing a perpetual fission reaction?

3 upvotes

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Conversely, how tall of a straw could I use to drink from a glass of water at sea-level?

1 upvotes

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What speed does electricity travel in a wire?

1 upvotes

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Can we look "through" a stream of light to see it at a newer state before it reaches our position?

1 upvotes

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One-way speed of light determined by measuring Time Dilation in two directions?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If I pour a line of flammable liquid on the ground and light it, can you calculate the speed at which the flame will propagate?	145
Do your fingerprints change with age?	7
Could you recover an object that crosses a black hole's event horizon if it were attached to a cable?	5
What is going on in your muscles when you're working out and cans barely lift a weight at the end of a set, but when you rest for a couple seconds, you can lift the same weight a couple more times?	4
With the age of the Earth at roughly 4.5 billion years, and the Scientific Revolution only occurring some 460 years ago, how do we know the constants we perceive as "constant" have not changed throughout billions of years?	3
What prevents a nuclear bomb from causing a perpetual fission reaction?	3
Conversely, how tall of a straw could I use to drink from a glass of water at sea-level?	1
What speed does electricity travel in a wire?	1
Can we look "through" a stream of light to see it at a newer state before it reaches our position?	1
One-way speed of light determined by measuring Time Dilation in two directions?	1