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

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Why is the speed of light slower in a non-vacuum? What slows it down?

34 upvotes

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How does salt "enhance the flavour" of other substances if the salty taste sensation is independent from other taste mechanisms?

33 upvotes

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Can sound waves be polarized?

29 upvotes

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Climbing a stationary escalator can induce a sense of vertigo. How does the brain know this escalator is different from stairs?

28 upvotes

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What does the colour of gas giant planets, like Jupiter's Red Spot come from?

26 upvotes

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Why are there so few green flowers?

24 upvotes

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Why is it so hard to predict supernovae?

21 upvotes

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When a spacecraft gets a "gravitational boost" from a planet, Newton's laws of motion tell us that the planet gets a "gravitational drag". With enough spacecraft, could we ever inadvertently alter the orbit of a planet?

21 upvotes

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What makes gold, gold in colour?

20 upvotes

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What actually causes cracking joints? Is there any real biological benefit?

18 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why is the speed of light slower in a non-vacuum? What slows it down?	34
How does salt "enhance the flavour" of other substances if the salty taste sensation is independent from other taste mechanisms?	33
Can sound waves be polarized?	29
Climbing a stationary escalator can induce a sense of vertigo. How does the brain know this escalator is different from stairs?	28
What does the colour of gas giant planets, like Jupiter's Red Spot come from?	26
Why are there so few green flowers?	24
Why is it so hard to predict supernovae?	21
When a spacecraft gets a "gravitational boost" from a planet, Newton's laws of motion tell us that the planet gets a "gravitational drag". With enough spacecraft, could we ever inadvertently alter the orbit of a planet?	21
What makes gold, gold in colour?	20
What actually causes cracking joints? Is there any real biological benefit?	18