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

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If a commercial airplane has both engines fail at cruising altitude, how far can it glide in an attempt to find a safe place to land?

808 upvotes

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It's said that vaccination is achieved by injecting a small amount of dead virus into us. Could we be 'accidentally' vaccinated by happening to breathe in some dead virus floating around?

3 upvotes

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Why do we have fingerprints? Do any other animals have them?

1 upvotes

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Why do we use circular optics in cameras when the resultant image is rectangular?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If a commercial airplane has both engines fail at cruising altitude, how far can it glide in an attempt to find a safe place to land?	808
It's said that vaccination is achieved by injecting a small amount of dead virus into us. Could we be 'accidentally' vaccinated by happening to breathe in some dead virus floating around?	3
Why do we have fingerprints? Do any other animals have them?	1
Why do we use circular optics in cameras when the resultant image is rectangular?	1