/u/rounding_error's posts

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AskHistorians: What is the oldest information that remains classified by the US government?

1439 upvotes • r/AskHistorians

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What caused this ring of flat land circling the end of the Appalachian range?

365 upvotes • r/askscience

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A free neutron has a half-life of about ten minutes. Suppose we were to somehow get a kilogram or so of free neutrons together before they decayed. What sort of physical properties would this mass have?

223 upvotes • r/askscience

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What explains the optical distortions in Jacques-Henri Lartigue's famous 1913 "Car Trip" photo?

146 upvotes • r/askscience

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What was a typical Beethoven concert like?

141 upvotes • r/AskHistorians

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L-glucose costs half again as much per pound as gold but the molecule is a mirror image of glucose, table sugar. How is L-Glucose synthesized and why is this process so expensive?

119 upvotes • r/askscience

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How easy was it during World War II in the United States for underage people to join the military? Did they do any sort of age verification for recruits?

63 upvotes • r/AskHistorians

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How common was it for women to drive cars in the mid 20th century?

26 upvotes • r/AskHistorians

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Why is the speed of light slower when passing through matter than in a vacuum?

14 upvotes • r/askscience

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If an object falls into a black hole, a distant observer will see it get closer and closer to the event horizon but never cross over. That being the case, how do black holes actually come to exist?

9 upvotes • r/askscience

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Title	Upvotes	Subreddit	Mark as read	Favorited	Rating	Add to a list
AskHistorians: What is the oldest information that remains classified by the US government?	1439	AskHistorians
What caused this ring of flat land circling the end of the Appalachian range?	365	askscience
A free neutron has a half-life of about ten minutes. Suppose we were to somehow get a kilogram or so of free neutrons together before they decayed. What sort of physical properties would this mass have?	223	askscience
What explains the optical distortions in Jacques-Henri Lartigue's famous 1913 "Car Trip" photo?	146	askscience
What was a typical Beethoven concert like?	141	AskHistorians
L-glucose costs half again as much per pound as gold but the molecule is a mirror image of glucose, table sugar. How is L-Glucose synthesized and why is this process so expensive?	119	askscience
How easy was it during World War II in the United States for underage people to join the military? Did they do any sort of age verification for recruits?	63	AskHistorians
How common was it for women to drive cars in the mid 20th century?	26	AskHistorians
Why is the speed of light slower when passing through matter than in a vacuum?	14	askscience
If an object falls into a black hole, a distant observer will see it get closer and closer to the event horizon but never cross over. That being the case, how do black holes actually come to exist?	9	askscience