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

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Why is the Mediterranean Sea higher-than-average salinity, when the (seemingly) identical setup of the Baltic Sea (also fed by rivers, almost no connection to ocean) is virtually freshwater?

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When they say "the Moon's day temperature is 123C", what does that actually mean?

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Have humans evolved to eat hot food?

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How accurate are sleeve-based blood pressure measurements given the crudity of the approach and the significant difference in people's arms?

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How do IQ tests determine values at the extremes when they are so unlikely?

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What do those finger-clamp blood oxygen measuring devices actually measure? I wore one the other day and I asked the nurse whether it would go above 100% if I hyperventilated, to which she said no.

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I recently learned that fMRI pictures actually show activity averaged over many patients because individual activity is rather variable. What does that say about the predictive power of fMRI?

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Is there an actual meaning to the phrase "beating cancer"? Is there a point after which one can assume cancer will not return (i.e. no more likely than the population average), or is it always assumed to rather be an open-ended remission?

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Our brain and eyes account for different lighting conditions automatically. Why do we need to adjust the white balance/color temperature if we take a picture of the scene?

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Half of the year it's too warm in one place of the world and too cold in another, and 6 months later it is reversed. How feasible would it be to create a "heat exchange" across the necessary distances?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why is the Mediterranean Sea higher-than-average salinity, when the (seemingly) identical setup of the Baltic Sea (also fed by rivers, almost no connection to ocean) is virtually freshwater?	1
When they say "the Moon's day temperature is 123C", what does that actually mean?	1
Have humans evolved to eat hot food?	1
How accurate are sleeve-based blood pressure measurements given the crudity of the approach and the significant difference in people's arms?	1
How do IQ tests determine values at the extremes when they are so unlikely?	1
What do those finger-clamp blood oxygen measuring devices actually measure? I wore one the other day and I asked the nurse whether it would go above 100% if I hyperventilated, to which she said no.	1
I recently learned that fMRI pictures actually show activity averaged over many patients because individual activity is rather variable. What does that say about the predictive power of fMRI?	1
Is there an actual meaning to the phrase "beating cancer"? Is there a point after which one can assume cancer will not return (i.e. no more likely than the population average), or is it always assumed to rather be an open-ended remission?	1
Our brain and eyes account for different lighting conditions automatically. Why do we need to adjust the white balance/color temperature if we take a picture of the scene?	1
Half of the year it's too warm in one place of the world and too cold in another, and 6 months later it is reversed. How feasible would it be to create a "heat exchange" across the necessary distances?	1