/u/Butthole__Pleasures's posts

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With clocks like the cesium atomic clock, we know that the measurement is accurate to within an infinitesimal fraction of a second, but how do we know what a second is exactly?

514 upvotes • r/askscience

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How did the photographers of the first nuclear test ever know what filter and film exposure combination to use to get a clear image of it?

34 upvotes • r/askscience

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If I pee in a certain place in my back yard, will my dog smell it and recognize that this is my territory? Do humans have those chemicals in their pee, and can they be recognized across species?

6 upvotes • r/askscience

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Do wolves drag their asses on the ground to scratch butt itches like dogs, or is that a new thing in domesticated dogs?

4 upvotes • r/askscience

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Why is it that alcohol in combination with paracetamol can cause liver damage due to glutathione issues but alcohol on its own does not?

3 upvotes • r/askscience

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Why are children able to watch the same movie or TV episode over and over and enjoy it so much while adults rarely can?

2 upvotes • r/askscience

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Is it possible to "sleep off" alcohol intoxication? Do our bodies metabolize alcohol at different rates when asleep or awake?

2 upvotes • r/askscience

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How long have people known about the sun rising and setting at different times across different longitudes?

1 upvotes • r/AskHistorians

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If we can see places in the universe that are over 13 billion light years away, but our universe is only 13.8 billion years old, how have those objects only appeared to have only undergone >800 million years of change in the past 13 billion years?

1 upvotes • r/askscience

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Is it possible for a human to be born with a specific mutation that would prevent them from aging and theoretically live indefinitely?

1 upvotes • r/askscience

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Title	Upvotes	Subreddit	Mark as read	Favorited	Rating	Add to a list
With clocks like the cesium atomic clock, we know that the measurement is accurate to within an infinitesimal fraction of a second, but how do we know what a second is exactly?	514	askscience
How did the photographers of the first nuclear test ever know what filter and film exposure combination to use to get a clear image of it?	34	askscience
If I pee in a certain place in my back yard, will my dog smell it and recognize that this is my territory? Do humans have those chemicals in their pee, and can they be recognized across species?	6	askscience
Do wolves drag their asses on the ground to scratch butt itches like dogs, or is that a new thing in domesticated dogs?	4	askscience
Why is it that alcohol in combination with paracetamol can cause liver damage due to glutathione issues but alcohol on its own does not?	3	askscience
Why are children able to watch the same movie or TV episode over and over and enjoy it so much while adults rarely can?	2	askscience
Is it possible to "sleep off" alcohol intoxication? Do our bodies metabolize alcohol at different rates when asleep or awake?	2	askscience
How long have people known about the sun rising and setting at different times across different longitudes?	1	AskHistorians
If we can see places in the universe that are over 13 billion light years away, but our universe is only 13.8 billion years old, how have those objects only appeared to have only undergone >800 million years of change in the past 13 billion years?	1	askscience
Is it possible for a human to be born with a specific mutation that would prevent them from aging and theoretically live indefinitely?	1	askscience