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Old 12-22-2009, 05:44 PM #1
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Interesting crap you've inadvertently learned...

What are some interesting things that you've learned in class that make you go hmm?

In my psych class we learned that a toddler cannot make simple comparisons if one is deformed...i.e, fill a tall skinny glass with milk, and fill a much shorter but fatter glass with milk, and even if its completely obvious that the shorter glass has more milk, the toddler would still pick the tall one just because the milk level is higher. Another example would be taking 5 pennies, and lining them up, then taking another 5 pennies, and lining them up as well, but spaced out. If you ask a young child which has more, they will pick the spaced out group, just because it looks bigger.

See: http://webspace.ship.edu/cgboer/piaget.html (search conservation)

In my unix class, I've learned how scarily easy it is to bring an unprotected computer to it's knees.
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Old 12-22-2009, 05:51 PM #2
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i learn alot of stuff when im studying, but thats because i have the history channel going when im studying.
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Old 12-22-2009, 06:28 PM #3
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Adding salt to boiling water when cooking pasta doesn't make the water boil measurably hotter.

It seems like most people already knew this, yet it took Physical Chemistry for me to find out.
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Old 12-22-2009, 07:18 PM #4
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Old 12-22-2009, 07:49 PM #5
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Originally Posted by MVPaintballer View Post
Adding salt to boiling water when cooking pasta doesn't make the water boil measurably hotter.

It seems like most people already knew this, yet it took Physical Chemistry for me to find out.
lowers the boiling point. more stuff in the solution = water is less dense comparatively = lower boiling point. probably takes a hell of a lot of salt to actually do anything, though. learned that recently as well.

also, EVERYTHING you wanted to not learn and write off as being magic is either quantum mechanics or calc. E = mc^2? taylor series expansion (1st 2 terms, anyway). area of a triangle? definite integral. why the sky is blue? quantum.
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Old 12-22-2009, 07:51 PM #6
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also, EVERYTHING you wanted to not learn and write off as being magic is either quantum mechanics or calc. E = mc^2? taylor series expansion (1st 2 terms, anyway). area of a triangle? definite integral. why the sky is blue? quantum.
true that.
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Old 12-22-2009, 08:26 PM #7
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lowers the boiling point. more stuff in the solution = water is less dense comparatively = lower boiling point. probably takes a hell of a lot of salt to actually do anything, though. learned that recently as well.

Heh, well, whoever taught you that is wrong. Other than positive azeotropic mixtures (such as 96% EtOH / H2O) (volatile), I'm fairly certain that any solute will elevate the boiling point. I'm not quite sure how density has anything to do with it.

http://en.wikipedia.org/wiki/Boiling_point_elevation

Salt will absolutely raise the boiling point.

The opposite is true with freezing point (you can lower a freezing point).
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Old 12-22-2009, 09:03 PM #8
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**** me, i was backwards. i was wondering why that seemed weird when i was typing it...
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Old 12-23-2009, 12:18 PM #9
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-People who have had an amputation can still feel pain in their missing limbs. It's a phenomenon known as "phantom pain"
-How we see relies heavily on steriochemistry of the organic molecule rodopsin
-Calculus can be used to find a person's heart rate and blood pressure
-How to take 1667 one dollar bills and turn it into 50 mg of cocaine(I'll actually be trying this over the summer)
-How to make Trinitrotoluene
-How to make a homemade nuclear bomb
-Why carbon monoxide is poisonous


The list goes on and on
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Old 12-23-2009, 12:28 PM #10
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squirrels aren't afraid of people on campus
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Old 12-23-2009, 01:25 PM #11
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Older traffic light sensors induce eddy currents in vehicles to sense when traffic is present. Modern lights, though, use optical sensing for traffic.
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Old 12-23-2009, 01:37 PM #12
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The best way to blow up a bridge, from the placement of the charges, to how to make the charges, how to shape them.
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Old 12-23-2009, 03:05 PM #13
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the majority of the alcohol absorbed into your bloodstream when drinking is absorbed through your small intestine.
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Old 12-23-2009, 05:18 PM #14
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the majority of the alcohol absorbed into your bloodstream when drinking is absorbed through your small intestine.
I was always under the impression your mouth absorbed a good deal of it as well. But what you said doesnt surprise me.
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Old 12-23-2009, 05:27 PM #15
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why people in Eurasia conquered everything and why Africa probably wont succeed for a very long time. Just dependent on the native crops and animals
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Old 12-23-2009, 11:19 PM #16
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and why Africa probably wont succeed for a very long time. Just dependent on the native crops and animals
I learned that it is the imperialistic nations that caused Africa to turn out the way it is because the people didn't learn how to develop on their own. The colonists built all of this infrastructure and stopped maintaining it or took it when they exhausted the resources and left. They set up boarders which forced rival tribes to try and coexist, and now we have genocide.

Oh, another really interesting thing i learned is that Brown university was established with proceeds from slave trade. The Brown family were some of the most prosperous slave traders in the country. Kind of weird because they brought the slaves into the country via Providence, which is north of the mason dixon line. My friend used to be a cop at the rhode island school of design, and in one of their buildings (a building formerly owned by Brown) had shackles attached to the basement walls for detaining slaves.
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Old 12-23-2009, 11:23 PM #17
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well mostly why they didnt succeed in the past is due to crops and such. But presently yeah i would agree that has a lot to do with it.
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Old 12-23-2009, 11:28 PM #18
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Old 12-23-2009, 11:35 PM #19
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squirrels aren't afraid of people on campus
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Old 12-23-2009, 11:42 PM #20
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Thats because all of ours are drunk
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Old 12-24-2009, 07:23 AM #21
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squirrels aren't afraid of people on campus
DOOD! You to?!?

i thought that was only my campus!
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