/u/[deleted]'s posts in /r/askscience

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Is there evidence for long-term variation or change in our physical constants?

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If a multiple-choice exam switched from using 4 possible answers to 2, how much would you expect the grades to increase just due to chance?

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What is fat?

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can a material get hotter than the heat from the heat source applied to it?

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How permeable is skin?

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If I'm getting this right, mass is thought to be derived from the Higgs boson. If electrons are fundamental particles (can't be further broken down), how do they have mass?

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Has mankind always had psychological problems?

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I saw a lecture the other day where the host claimed that it is possible for galaxies to accelerate so much that it can move faster than the speed of light (in a few billion years). He also added that this was allowed by General Relativity. How?

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Is this normal?

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How did Einstein connect time and gravity? What would one have to do with the other in mathematic calculations?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Is there evidence for long-term variation or change in our physical constants?	14
If a multiple-choice exam switched from using 4 possible answers to 2, how much would you expect the grades to increase just due to chance?	14
What is fat?	14
can a material get hotter than the heat from the heat source applied to it?	14
How permeable is skin?	14
If I'm getting this right, mass is thought to be derived from the Higgs boson. If electrons are fundamental particles (can't be further broken down), how do they have mass?	14
Has mankind always had psychological problems?	14
I saw a lecture the other day where the host claimed that it is possible for galaxies to accelerate so much that it can move faster than the speed of light (in a few billion years). He also added that this was allowed by General Relativity. How?	14
Is this normal?	14
How did Einstein connect time and gravity? What would one have to do with the other in mathematic calculations?	14