/u/DrBatman0's posts in /r/askscience

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Are there any fundamental laws of physics preventing a craft (such as an aeroplane or helicopter) staying permanently airborne through solar power?

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I am creating a fictional world where a deity has suppressed all flow of electricity. What are some things that surprisingly still work? What things might not work despite expecting them to?

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Why do (and how can) Hydrocarbons have such a higher energy density than Carbohydrates?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Are there any fundamental laws of physics preventing a craft (such as an aeroplane or helicopter) staying permanently airborne through solar power?	1
I am creating a fictional world where a deity has suppressed all flow of electricity. What are some things that surprisingly still work? What things might not work despite expecting them to?	1
Why do (and how can) Hydrocarbons have such a higher energy density than Carbohydrates?	1