/u/andyjeff76's posts in /r/askscience

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If photons travel at the speed of light, and time is dilated as you approach this speed, does this mean that all photons are precisely zero seconds old by their own reckoning?

905 upvotes

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Is the rise in Measles cases the result of the anti-vaccination movement, or is there another explanation?

387 upvotes

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Why does pure aluminum have such a high thermal conductivity, but such a low elastic modulus?

38 upvotes

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Why do different substances have different specific heat values?

6 upvotes

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What is the ideal temperature for Earth?

1 upvotes

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How could there be anything "inside" a black hole, beyond the event horizon? Time moves slower and slower as you approach a gravitational singularity. By our reckoning, shouldn't everything falling into a black hole be right on it's surface?

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How much higher would g need to have been to have prevented the use of chemical rockets to enter space?

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Why are farts that feel "hot" particularly smelly?

1 upvotes

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Why are farts that feel "hot" particularly smelly?

1 upvotes

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How many of the atoms that were in George Washington's body are now in my body?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If photons travel at the speed of light, and time is dilated as you approach this speed, does this mean that all photons are precisely zero seconds old by their own reckoning?	905
Is the rise in Measles cases the result of the anti-vaccination movement, or is there another explanation?	387
Why does pure aluminum have such a high thermal conductivity, but such a low elastic modulus?	38
Why do different substances have different specific heat values?	6
What is the ideal temperature for Earth?	1
How could there be anything "inside" a black hole, beyond the event horizon? Time moves slower and slower as you approach a gravitational singularity. By our reckoning, shouldn't everything falling into a black hole be right on it's surface?	1
How much higher would g need to have been to have prevented the use of chemical rockets to enter space?	1
Why are farts that feel "hot" particularly smelly?	1
Why are farts that feel "hot" particularly smelly?	1
How many of the atoms that were in George Washington's body are now in my body?	1