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

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If the Universe keeps expanding at an increasing rate, will there be a time when that space between things expands beyond the speed of light?

2164 upvotes

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"A substance with a negative temperature in the Kelvin scale is not colder than absolute zero, but rather it is hotter than infinite temperature". How is this possible, and how was it achieved?

25 upvotes

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When we say that the faster an object travels through space, the more mass it gains, is it because it interacts more and more with the Higgs field?

5 upvotes

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I have a string attached to a rock, and I start spinning it. The piece of string closer to the rock travels faster that the piece of string closer to my hand. Does this means the string is travelling through time at different speeds in different sections of itself?

5 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If the Universe keeps expanding at an increasing rate, will there be a time when that space between things expands beyond the speed of light?	2164
"A substance with a negative temperature in the Kelvin scale is not colder than absolute zero, but rather it is hotter than infinite temperature". How is this possible, and how was it achieved?	25
When we say that the faster an object travels through space, the more mass it gains, is it because it interacts more and more with the Higgs field?	5
I have a string attached to a rock, and I start spinning it. The piece of string closer to the rock travels faster that the piece of string closer to my hand. Does this means the string is travelling through time at different speeds in different sections of itself?	5