/u/14thMarines's posts in /r/askscience

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Why is String Theory a "Theory"? In science, doesn't "Theory" mean something tested with reproducible results?

2689 upvotes

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Does the placenta have the DNA of the mother or the baby? What about the umbilical cord?

630 upvotes

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Do mirrors reflect only visible lights, or do they reflect light of other frequencies (if so then which types--x-ray, infrared, gamma, etc)?

337 upvotes

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What do astronomers really mean when they say that the universe is flat?

4 upvotes

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Why don't we use thorium for nuclear energy instead of uranium?

4 upvotes

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Why does String Theory attract so many people even when everybody knows that it might be entirely wrong, and requires more and more acceptance of new weirdness implied such as extra dimensions and "branes"?

1 upvotes

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Shellfish are the insects of the sea. If you boiled a large enough land insect, would it taste like shellfish?

1 upvotes

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[Time Travel] Have the big brains in theoretical physics who do time travel thought experiments thought about the questions in the text below?

1 upvotes

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NASA is working on a "warp drive". I understand this contracts and expands space. Please explain how one contracts, expands, or folds space? What are the physics of doing that?

1 upvotes

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E=Mc^2: What does the speed of light have to do with the relationship between matter and energy?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why is String Theory a "Theory"? In science, doesn't "Theory" mean something tested with reproducible results?	2689
Does the placenta have the DNA of the mother or the baby? What about the umbilical cord?	630
Do mirrors reflect only visible lights, or do they reflect light of other frequencies (if so then which types--x-ray, infrared, gamma, etc)?	337
What do astronomers really mean when they say that the universe is flat?	4
Why don't we use thorium for nuclear energy instead of uranium?	4
Why does String Theory attract so many people even when everybody knows that it might be entirely wrong, and requires more and more acceptance of new weirdness implied such as extra dimensions and "branes"?	1
Shellfish are the insects of the sea. If you boiled a large enough land insect, would it taste like shellfish?	1
[Time Travel] Have the big brains in theoretical physics who do time travel thought experiments thought about the questions in the text below?	1
NASA is working on a "warp drive". I understand this contracts and expands space. Please explain how one contracts, expands, or folds space? What are the physics of doing that?	1
E=Mc^2: What does the speed of light have to do with the relationship between matter and energy?	1