/u/syphon3980's posts in /r/askscience

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When you dream, is the time spent dreaming relevant to time awake? Or when we dream is time slowed down or sped up.

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Is it possible to project 3D images into some sort of liquid, that would allow for a high quality hologram?

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Is it possible to project images on a sheet of glass that is transparent on both sides?

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If we were to cover the earth with 2 billion more trees, how would life change if there was a significant increase in the atmosphere's oxygen content?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
When you dream, is the time spent dreaming relevant to time awake? Or when we dream is time slowed down or sped up.	1
Is it possible to project 3D images into some sort of liquid, that would allow for a high quality hologram?	1
Is it possible to project images on a sheet of glass that is transparent on both sides?	1
If we were to cover the earth with 2 billion more trees, how would life change if there was a significant increase in the atmosphere's oxygen content?	1