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

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My skin shows up on a standard, infrared, or UV cameras; my bones show up on an X-ray camera. Do any cameras exist where I would be totally invisible to it?

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What determines whether or not a soda/pop/coke has caffeine, when they're all essentially carbonated water, HFCS, and flavorings? Do they add it? And if yes, where do they get it from?

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How long do unpowered objects of terrestrial origin (space junk, etc.) typically orbit the Earth before reentry? What are the biggest factors that determine how long they stay up?

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Does the total mass of Earth and its contents and atmosphere change appreciably over time? If so, what causes the gain or loss?

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What determines whether an electrical appliance or device needs a three-prong plug instead of a two-prong plug?

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What makes some kinds of plastic bags more crinkly than others? What is making the sound?

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Has automotive/marine battery technology advanced at anywhere near the rate of consumer electronics battery tech in the last 30 years?

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Is it possible to change the ambient temperature range at which someone feels comfortable through any method other than acclimatization, such as with drugs or other therapies?

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If dreams are just our brain's way of processing the day's information, why do we often dream about impossible or highly improbable things, crafting complex nonsensical stories that are seemingly unrelated to our daytime experiences?

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Does constant low-volume sound damage our hearing?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
My skin shows up on a standard, infrared, or UV cameras; my bones show up on an X-ray camera. Do any cameras exist where I would be totally invisible to it?	3
What determines whether or not a soda/pop/coke has caffeine, when they're all essentially carbonated water, HFCS, and flavorings? Do they add it? And if yes, where do they get it from?	3
How long do unpowered objects of terrestrial origin (space junk, etc.) typically orbit the Earth before reentry? What are the biggest factors that determine how long they stay up?	3
Does the total mass of Earth and its contents and atmosphere change appreciably over time? If so, what causes the gain or loss?	3
What determines whether an electrical appliance or device needs a three-prong plug instead of a two-prong plug?	3
What makes some kinds of plastic bags more crinkly than others? What is making the sound?	2
Has automotive/marine battery technology advanced at anywhere near the rate of consumer electronics battery tech in the last 30 years?	2
Is it possible to change the ambient temperature range at which someone feels comfortable through any method other than acclimatization, such as with drugs or other therapies?	2
If dreams are just our brain's way of processing the day's information, why do we often dream about impossible or highly improbable things, crafting complex nonsensical stories that are seemingly unrelated to our daytime experiences?	2
Does constant low-volume sound damage our hearing?	2