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

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Is there a -- and if so, what is the -- "feedback" mechanism from the bladder to the kidneys? (Is there a message like, "Stop already!!"?)

85 upvotes

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Smallpox is officially eradicated, and IIRC, even the lab samples have now been destroyed. Are we "getting close" with anything else -- specifically, polio and tuberculosis?

35 upvotes

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What does the strength of the magnet affect in an MRI?

16 upvotes

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How does a "loop sensor" in a street work?

9 upvotes

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Are there more -features- in 4G vs 3G, and 5G vs 4G, than just higher speed?

8 upvotes

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What are the (electrical) difference between the various sizes of household batteries? Just more amps, or is there more to it than that?

3 upvotes

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Yet another USB cable/charger question: does the USB standard level of the -adapter- also play a role in charge rate?

2 upvotes

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Since a Watt is a rate, not an absolute measure, why do we use kWh to measure "total energy' and not just Joules?

1 upvotes

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Pseudo-science: how much electricity does it take to fry a squirrel?

1 upvotes

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GPS 201: Where can I learn more about the actual protocol and algorithms?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Is there a -- and if so, what is the -- "feedback" mechanism from the bladder to the kidneys? (Is there a message like, "Stop already!!"?)	85
Smallpox is officially eradicated, and IIRC, even the lab samples have now been destroyed. Are we "getting close" with anything else -- specifically, polio and tuberculosis?	35
What does the strength of the magnet affect in an MRI?	16
How does a "loop sensor" in a street work?	9
Are there more -features- in 4G vs 3G, and 5G vs 4G, than just higher speed?	8
What are the (electrical) difference between the various sizes of household batteries? Just more amps, or is there more to it than that?	3
Yet another USB cable/charger question: does the USB standard level of the -adapter- also play a role in charge rate?	2
Since a Watt is a rate, not an absolute measure, why do we use kWh to measure "total energy' and not just Joules?	1
Pseudo-science: how much electricity does it take to fry a squirrel?	1
GPS 201: Where can I learn more about the actual protocol and algorithms?	1