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

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Don't direct CO2 capture methods need to separate the O2 from the C, otherwise won't it be removing oxygen from the atmosphere too?

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With technology available today would a manned spacecraft "dropped" randomly in the solar system be able to orient itself and find where the planets and Earth were?

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Were there specific breakthroughs that allowed magnetic induction to become more popular?

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What's more energy efficient - using a leaf blower or using your own muscle energy to rake leaves?

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How exaggerated is the scene from HBO's The Newsroom about climate change being too far gone?

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What's the theoretical limit for miniaturizing a power reactor that could yield useful amounts of energy (relative to their size) necessary for common science fiction stories to be possible?

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Why is energy measured so many different ways while mass/weight have so few by comparison?

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I can't find much on evolution as a "physical law" - meaning more than just a biological process. Does anyone know of sources?

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I recently heard drumming at ~20Hz begins to sound like a single note (think airplane propeller starting then turning into a droning). But I thought frequencies less than 20Hz were "outside" our range of hearing. What am I missing?

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Assuming enough lead time, how long could a sustainable population survive without the energy of the sun if that were no longer available to the planet?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Don't direct CO2 capture methods need to separate the O2 from the C, otherwise won't it be removing oxygen from the atmosphere too?	1
With technology available today would a manned spacecraft "dropped" randomly in the solar system be able to orient itself and find where the planets and Earth were?	1
Were there specific breakthroughs that allowed magnetic induction to become more popular?	1
What's more energy efficient - using a leaf blower or using your own muscle energy to rake leaves?	1
How exaggerated is the scene from HBO's The Newsroom about climate change being too far gone?	1
What's the theoretical limit for miniaturizing a power reactor that could yield useful amounts of energy (relative to their size) necessary for common science fiction stories to be possible?	1
Why is energy measured so many different ways while mass/weight have so few by comparison?	1
I can't find much on evolution as a "physical law" - meaning more than just a biological process. Does anyone know of sources?	1
I recently heard drumming at ~20Hz begins to sound like a single note (think airplane propeller starting then turning into a droning). But I thought frequencies less than 20Hz were "outside" our range of hearing. What am I missing?	1
Assuming enough lead time, how long could a sustainable population survive without the energy of the sun if that were no longer available to the planet?	1