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

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If a baby is born prematurely, does it develop like babies born around the same time or like babies conceived around the same time?

27 upvotes

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If an airplane acts as a Faraday Cage, why can we still use 4G and GPS reasonably well inside (at low altitudes)?

12 upvotes

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When an entire winter is exceptionally cold (like in the North America now) or warm (like in Europe now) is this coincidence or is there a structural reason?

4 upvotes

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If we need to dramatically cut carbon emissions from air traffic at some point, would a return of airships be realistic (for routes where trains are not an option)?

1 upvotes

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If you are within the event horizon of a black hole, and another black hole moves close enough to cancel out the other's gravity, would you be able to escape them both?

1 upvotes

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Why in primary school do boys mostly befriend other boys and girls other girls?

1 upvotes

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Does the time refrigerated/frozen food stays safe at room temperature get shorter as it gets closer to the expiry date?

1 upvotes

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If someone gets a false negative on a rapid antigen test, does it mean they are less infectuous than a random infected person?

1 upvotes

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If the brain and unborn babies get priority when oxygen or energy is low, how do the organs 'know' when to preserve resources for them?

1 upvotes

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At what distance would living near a busy highway start noticeably affecting a healthy person's health?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If a baby is born prematurely, does it develop like babies born around the same time or like babies conceived around the same time?	27
If an airplane acts as a Faraday Cage, why can we still use 4G and GPS reasonably well inside (at low altitudes)?	12
When an entire winter is exceptionally cold (like in the North America now) or warm (like in Europe now) is this coincidence or is there a structural reason?	4
If we need to dramatically cut carbon emissions from air traffic at some point, would a return of airships be realistic (for routes where trains are not an option)?	1
If you are within the event horizon of a black hole, and another black hole moves close enough to cancel out the other's gravity, would you be able to escape them both?	1
Why in primary school do boys mostly befriend other boys and girls other girls?	1
Does the time refrigerated/frozen food stays safe at room temperature get shorter as it gets closer to the expiry date?	1
If someone gets a false negative on a rapid antigen test, does it mean they are less infectuous than a random infected person?	1
If the brain and unborn babies get priority when oxygen or energy is low, how do the organs 'know' when to preserve resources for them?	1
At what distance would living near a busy highway start noticeably affecting a healthy person's health?	1