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

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What determines how hot a furnace can get? In other words, why can't I keep burning coal and make a furnace (or something in it) reach infinite temperatures? Why is there a cap?

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I'm confused by the four-stroke cycle in internal combustion engines. How does one down stroke of combustion make enough energy for three other strokes?

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So, why can't plants grow faster? What is the main limiting factor in the speed of plant metabolisms?

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Some animals have become capable of asexual reproduction. Are there any species of animals which produce offspring not through a gamete, yet still produce vestigial gametes?

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Could a terrestrial planet that wasn't orbiting a star have enough radioactive material for it to have all three states of water? How much more radioactive material would it need than Earth? Would it be habitable, or too radioactive for life?

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Steve is apparently caused by gasses as hot as 3000°c moving at 6 km/s in the upper atmosphere. What could cause this kind of temperature and speed? Is this kind of thing a normal occurrence? Would it destroy an unlucky craft that went through it?

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Do extremophiles actually "like" extreme environments as their names imply, or are they just able to survive in them in addition to elsewhere?

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Is there a specific question we could say the Theory of Evolution by Natural Selection answered?

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A question about experiencing time at the speed of light.

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Wouldn't endurance runners quickly pass the optimum muscle/weight ratio?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
What determines how hot a furnace can get? In other words, why can't I keep burning coal and make a furnace (or something in it) reach infinite temperatures? Why is there a cap?	1
I'm confused by the four-stroke cycle in internal combustion engines. How does one down stroke of combustion make enough energy for three other strokes?	1
So, why can't plants grow faster? What is the main limiting factor in the speed of plant metabolisms?	1
Some animals have become capable of asexual reproduction. Are there any species of animals which produce offspring not through a gamete, yet still produce vestigial gametes?	1
Could a terrestrial planet that wasn't orbiting a star have enough radioactive material for it to have all three states of water? How much more radioactive material would it need than Earth? Would it be habitable, or too radioactive for life?	1
Steve is apparently caused by gasses as hot as 3000°c moving at 6 km/s in the upper atmosphere. What could cause this kind of temperature and speed? Is this kind of thing a normal occurrence? Would it destroy an unlucky craft that went through it?	1
Do extremophiles actually "like" extreme environments as their names imply, or are they just able to survive in them in addition to elsewhere?	1
Is there a specific question we could say the Theory of Evolution by Natural Selection answered?	0
A question about experiencing time at the speed of light.	0
Wouldn't endurance runners quickly pass the optimum muscle/weight ratio?	0