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

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If I concentrate, I can feel actual physical sensation in between my eyes and right above the bridge of my nose. Is this common, and if so, what causes it?

2 upvotes

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How exactly does light get "slowed down" and how did the team that broke the record for slowest light speed do it?

1 upvotes

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How fast are the cracks in glass going when the glass breaks?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If I concentrate, I can feel actual physical sensation in between my eyes and right above the bridge of my nose. Is this common, and if so, what causes it?	2
How exactly does light get "slowed down" and how did the team that broke the record for slowest light speed do it?	1
How fast are the cracks in glass going when the glass breaks?	1