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

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If someone wakes up from a nightmare in the middle of the night with a high heart rate. Did the nightmare trigger an increased heart rate, or did an increased heart rate manifest into a nightmare while sleeping?

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How do those infrared laser pointer thermometers work?

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How can I tell if my new "ion generator" fan is actually emitting ions?

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Could neutrons be used instead of X-rays for medical imaging? Would that be safer?

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Why does Hubble give us great pictures of galaxies and nebulas far beyond and not detailed ones from the planets around us?

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Why do some polymorphs simultaneously disappear around the world?

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How does The Regression to the Mean phenomenon not contradict the Gambler's Fallacy?

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Why is O the universal donor when it has anti-A and anti-B antibodies in its plasma?

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What Happens to Light Absorbed by a Black Hole?

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When an Iconic satellite (Hubble, ISS) is at the end of its life cycle, could we launch it passengerless into a stable orbit such as those of comets?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If someone wakes up from a nightmare in the middle of the night with a high heart rate. Did the nightmare trigger an increased heart rate, or did an increased heart rate manifest into a nightmare while sleeping?	18
How do those infrared laser pointer thermometers work?	18
How can I tell if my new "ion generator" fan is actually emitting ions?	18
Could neutrons be used instead of X-rays for medical imaging? Would that be safer?	18
Why does Hubble give us great pictures of galaxies and nebulas far beyond and not detailed ones from the planets around us?	18
Why do some polymorphs simultaneously disappear around the world?	18
How does The Regression to the Mean phenomenon not contradict the Gambler's Fallacy?	18
Why is O the universal donor when it has anti-A and anti-B antibodies in its plasma?	18
What Happens to Light Absorbed by a Black Hole?	18
When an Iconic satellite (Hubble, ISS) is at the end of its life cycle, could we launch it passengerless into a stable orbit such as those of comets?	18