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

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When you use a projector or anything shining light in a dark room, are the little white things coming out of it light particles, or are they small pieces of dust that the light illuminates?

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When you use a projector or anything shining light in a dark room, are the little white things coming out of it light particles, or are they small pieces of dust that the light illuminates?

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How do water repellant, or so called "Waterproofing" sprays work in making materials that water would otherwise soak through, run off in pellets like a shield is in the way?

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If the Brain relies on Oxygen as one of the main contributors for the energy to function, does that mean that people with exceedingly above average brain activity, or people who engage in mentally demanding tasks would breath in more frequently/intake more oxygen as a result?

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If the Brain relies on Oxygen as one of the main contributors for the energy to function, does that mean that people with exceedingly above average brain activity, or people who engage in mentally demanding tasks would breath in more frequently/intake more oxygen as a result?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
When you use a projector or anything shining light in a dark room, are the little white things coming out of it light particles, or are they small pieces of dust that the light illuminates?	1
When you use a projector or anything shining light in a dark room, are the little white things coming out of it light particles, or are they small pieces of dust that the light illuminates?	1
How do water repellant, or so called "Waterproofing" sprays work in making materials that water would otherwise soak through, run off in pellets like a shield is in the way?	1
If the Brain relies on Oxygen as one of the main contributors for the energy to function, does that mean that people with exceedingly above average brain activity, or people who engage in mentally demanding tasks would breath in more frequently/intake more oxygen as a result?	1
If the Brain relies on Oxygen as one of the main contributors for the energy to function, does that mean that people with exceedingly above average brain activity, or people who engage in mentally demanding tasks would breath in more frequently/intake more oxygen as a result?	1