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

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How does gravity escape a black hole?

12 upvotes

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Is it conceivable that a life form could evolve in a human-deadly portion of the universe (such as radioactive, temperature, or vacuum) with resistance/immunity to that environment, or is that sort of thing so unlikely that it is virtually impossible?

9 upvotes

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Is there any evidence that recent (last 10,000 years) human activity has altered our eye physiology through evolution?

5 upvotes

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How much influence does the gyroscopic effect of a 26" diameter wheel have on keeping a 200lb rider vertical at, say, 35 miles per hour? Is it enough of an effect to matter?

1 upvotes

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For the double-slit experiment (if I understand it correctly) the results depend on whether it is observed. What about observations by electronic means (camera), or even observations by non-aware beings (animals)?

1 upvotes

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Can anyone explain "dark matter"? What kind of matter is it? could it theoretically be "scooped up" and captured for study assuming we could get to it?

1 upvotes

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If the moon were to suddenly vanish, what kind of devastation would the resulting leveling of the tides create?

1 upvotes

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"A Universe from Nothing" by Krauss. Is this a current and/or accurate synopsis of current theory?

1 upvotes

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Is “a universe from nothing“ still accurate?

1 upvotes

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Has anyone studied the attraction that exists between backpack straps and office chair casters?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
How does gravity escape a black hole?	12
Is it conceivable that a life form could evolve in a human-deadly portion of the universe (such as radioactive, temperature, or vacuum) with resistance/immunity to that environment, or is that sort of thing so unlikely that it is virtually impossible?	9
Is there any evidence that recent (last 10,000 years) human activity has altered our eye physiology through evolution?	5
How much influence does the gyroscopic effect of a 26" diameter wheel have on keeping a 200lb rider vertical at, say, 35 miles per hour? Is it enough of an effect to matter?	1
For the double-slit experiment (if I understand it correctly) the results depend on whether it is observed. What about observations by electronic means (camera), or even observations by non-aware beings (animals)?	1
Can anyone explain "dark matter"? What kind of matter is it? could it theoretically be "scooped up" and captured for study assuming we could get to it?	1
If the moon were to suddenly vanish, what kind of devastation would the resulting leveling of the tides create?	1
"A Universe from Nothing" by Krauss. Is this a current and/or accurate synopsis of current theory?	1
Is “a universe from nothing“ still accurate?	1
Has anyone studied the attraction that exists between backpack straps and office chair casters?	1