/u/alexthe5th's posts in /r/askscience

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How are underground tunnels affected by earthquakes, and what is done to keep them structurally sound in earthquake-prone regions?

30 upvotes

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If the half-life of uranium 235 is 700 million years and the age of the universe is 14.6 billion years, why is there a non-trivial amount of U-235 present in the Earth?

13 upvotes

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If light is a type of EM radiation, can we create antennas to convert visible light to electric current in the same way we do for radio waves?

6 upvotes

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Why is mathematical intuitionism no longer a popular school of thought?

6 upvotes

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Can the proof to Fermat's Last Theorem be explained in a way that can be even partially understood by mere mortals?

2 upvotes

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Why does thunder and lightning accompany rain but never snow?

2 upvotes

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If you a take a Northern hemisphere migratory bird that’s just about to fly south to migrate in the fall, and transport it by airplane to a location with the same temperature in the Southern hemisphere, will it fly north or south?

1 upvotes

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Science experts: what are the most thought-provoking and/or influential articles, theses or research papers you can recommend?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
How are underground tunnels affected by earthquakes, and what is done to keep them structurally sound in earthquake-prone regions?	30
If the half-life of uranium 235 is 700 million years and the age of the universe is 14.6 billion years, why is there a non-trivial amount of U-235 present in the Earth?	13
If light is a type of EM radiation, can we create antennas to convert visible light to electric current in the same way we do for radio waves?	6
Why is mathematical intuitionism no longer a popular school of thought?	6
Can the proof to Fermat's Last Theorem be explained in a way that can be even partially understood by mere mortals?	2
Why does thunder and lightning accompany rain but never snow?	2
If you a take a Northern hemisphere migratory bird that’s just about to fly south to migrate in the fall, and transport it by airplane to a location with the same temperature in the Southern hemisphere, will it fly north or south?	1
Science experts: what are the most thought-provoking and/or influential articles, theses or research papers you can recommend?	1