/u/roguespectre67's posts in /r/askscience

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Does the depth of field of the human eyeball decrease in the dark due to the dilation of the pupil?

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Is a person's ability to hear certain frequencies defined by genetics as much as their environment?

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What causes boiling water to froth when food (pasta, potatoes, etc.) is put in?

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What size group is required for the "horde mentality" to take effect?

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Assuming a perfectly symmetrical bell curve, is the mean value equal to the average, and if so, are there the same amount of data points above the average as below it?

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What causes an engine to have a “power band”, and why is it different for every engine?

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During periods of physical exertion, like exercise, does urine production increase due to the increased blood flow around the body (and therefore through the kidneys)?

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How exactly is the ideal engine size/performance determined for any given vehicle as it relates to fuel efficiency?

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Would it be beneficial (in terms of lowered pollution) to deliberately design engines that run hotter than they otherwise might? If so, what might be the downsides to this?

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When they say "In a vacuum, all objects fall at the same rate regardless of mass", does that mean the exact same rate, or simply similar enough that we can't visually see the difference?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Does the depth of field of the human eyeball decrease in the dark due to the dilation of the pupil?	2
Is a person's ability to hear certain frequencies defined by genetics as much as their environment?	1
What causes boiling water to froth when food (pasta, potatoes, etc.) is put in?	1
What size group is required for the "horde mentality" to take effect?	1
Assuming a perfectly symmetrical bell curve, is the mean value equal to the average, and if so, are there the same amount of data points above the average as below it?	1
What causes an engine to have a “power band”, and why is it different for every engine?	1
During periods of physical exertion, like exercise, does urine production increase due to the increased blood flow around the body (and therefore through the kidneys)?	1
How exactly is the ideal engine size/performance determined for any given vehicle as it relates to fuel efficiency?	1
Would it be beneficial (in terms of lowered pollution) to deliberately design engines that run hotter than they otherwise might? If so, what might be the downsides to this?	1
When they say "In a vacuum, all objects fall at the same rate regardless of mass", does that mean the exact same rate, or simply similar enough that we can't visually see the difference?	1