/u/adr826's posts in /r/askscience

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How do we know that gravity's effect on time dilation is not an artifact of the effect that gravity has on the electrons orbiting the cesium atom used in atomic clocks to detect time dilation?

213 upvotes

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How long after death does all electrical activity in the brain cease?

57 upvotes

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During a harmonic alignment of the planets is the barycenter of our solar system ever outside the sphere of the sun?

3 upvotes

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If the Michelson Morley experiment proved that there is no substance in space capable of interacting with light to slow it down what is the mechanism by which the cosmological expansion of space can redshift its spectrum? Wouldnt that require some friction to be inherent in space.

1 upvotes

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why do scientist disagree about whether a virus is alive?

1 upvotes

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How do genes tell Baby turtles how to find the ocean?

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Is there a way to estimate the number of Americans who might still be alive if President Trump had done nothing different except wearing a mask and encouraging all Americans to do likewise?

1 upvotes

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If we wanted to find another planet to live on how similar would the atmosphere have to be to earth for us to inhabit it?

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How did Native Americans deal with tornados and Hurricanes?

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Momentum in expanding space

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
How do we know that gravity's effect on time dilation is not an artifact of the effect that gravity has on the electrons orbiting the cesium atom used in atomic clocks to detect time dilation?	213
How long after death does all electrical activity in the brain cease?	57
During a harmonic alignment of the planets is the barycenter of our solar system ever outside the sphere of the sun?	3
If the Michelson Morley experiment proved that there is no substance in space capable of interacting with light to slow it down what is the mechanism by which the cosmological expansion of space can redshift its spectrum? Wouldnt that require some friction to be inherent in space.	1
why do scientist disagree about whether a virus is alive?	1
How do genes tell Baby turtles how to find the ocean?	1
Is there a way to estimate the number of Americans who might still be alive if President Trump had done nothing different except wearing a mask and encouraging all Americans to do likewise?	1
If we wanted to find another planet to live on how similar would the atmosphere have to be to earth for us to inhabit it?	1
How did Native Americans deal with tornados and Hurricanes?	1
Momentum in expanding space	1