cear Posted May 22, 2012 Share Posted May 22, 2012 Every seven-ten years all of your cells have been replaced. (Apart from the neurons in the cerebral cortex that is, they either survive your complete lifetime or just die off afaik.) Link to comment Share on other sites More sharing options...
Guest Gary C Posted May 22, 2012 Share Posted May 22, 2012 Every seven-ten years all of your cells have been replaced. (Apart from the neurons in the cerebral cortex that is, they either survive your complete lifetime or just die off afaik.) This is another one of my favourite scientific ideas/things. I feel safe knowing that every ~7 years I'm technically a completely different human. I guess this process slows down with age, though, right? Link to comment Share on other sites More sharing options...
cear Posted May 22, 2012 Share Posted May 22, 2012 Partly, for example your body fat cell replacement rate pretty much stagnates but your heart cell rate on the other hand slows down indeed. I don't know the numbers though. :) Link to comment Share on other sites More sharing options...
plstik Posted May 22, 2012 Share Posted May 22, 2012 Every seven-ten years all of your cells have been replaced. (Apart from the neurons in the cerebral cortex that is, they either survive your complete lifetime or just die off afaik.) This is another one of my favourite scientific ideas/things. I feel safe knowing that every ~7 years I'm technically a completely different human. I guess this process slows down with age, though, right? It´s also chilling if you try to put that into numbers: there are according to wa 10^14 cells in a human body (bacteria not included). And seven years are 220´752´000 seconds. So we roughly loose 452´997 cells per second. Link to comment Share on other sites More sharing options...
Freak of the week Posted May 22, 2012 Share Posted May 22, 2012 The story about the building of the Carthage says that that the queen Dido, the first queen of the Carthage, could have defined the area for the building as great as can be great the area that can be bounded by a skin of one bull. The queen has cut the bull's skin into small bands and then she has laid them on the ground next to each other, defining a circle with them. In mathematical literature this problem is called general isoperimetric problem, and it's task is to find the closed curve which has defined, fixed circumference, and which bounds the greatest possible area. The solution of this problem, which is a circle, was already known in Ancient Greece. This problem can also be solved more rigorously using a variational principle. Link to comment Share on other sites More sharing options...
Guest Gary C Posted May 22, 2012 Share Posted May 22, 2012 Not a clue. Link to comment Share on other sites More sharing options...
o00o Posted May 22, 2012 Share Posted May 22, 2012 this is a skull of a child developing adult teeth. Link to comment Share on other sites More sharing options...
lumpenprol Posted May 22, 2012 Share Posted May 22, 2012 holy shit Link to comment Share on other sites More sharing options...
zkreso Posted May 22, 2012 Share Posted May 22, 2012 That's making me really queasy for some reason. Link to comment Share on other sites More sharing options...
roasty Posted May 22, 2012 Author Share Posted May 22, 2012 when a caterpillar turns into a butterfly, its body turns into a sac of fluid and is reformed from scratch. despite this, they can remember things they learned as caterpillars. Not sure I believe the last bit, how could you tell? Still bloody amazing though, butterflies/caterpillars. http://www.scienceda...80304200858.htm The Georgetown researchers found that tobacco hornworm caterpillars could be trained to avoid particular odors delivered in association with a mild shock. When adult moths emerged from the pupae of trained caterpillars, they also avoided the odors, showing that they retained their larval memory. Life is so amazing sometimes, it makes me want to punch myself in the face Link to comment Share on other sites More sharing options...
gmanyo Posted May 22, 2012 Share Posted May 22, 2012 That skull is fucking disgusting, and I'm not even sure why. Link to comment Share on other sites More sharing options...
chim Posted May 22, 2012 Share Posted May 22, 2012 All of this is happening in your mind. Link to comment Share on other sites More sharing options...
gmanyo Posted May 22, 2012 Share Posted May 22, 2012 You live in the past (about 80 nanoseconds, I think) because your body takes time to process the sensory information it gets. Link to comment Share on other sites More sharing options...
o00o Posted May 22, 2012 Share Posted May 22, 2012 That skull is fucking disgusting, and I'm not even sure why. I think its weird to see teeth growing so deep inside the skull / close to the eyes even so its totally normal Link to comment Share on other sites More sharing options...
roasty Posted May 22, 2012 Author Share Posted May 22, 2012 For a brief period of time, you were the youngest person in the world Link to comment Share on other sites More sharing options...
cruising for burgers Posted May 22, 2012 Share Posted May 22, 2012 That skull is fucking disgusting, and I'm not even sure why. I think its weird to see teeth growing so deep inside the skull / close to the eyes even so its totally normal Link to comment Share on other sites More sharing options...
o00o Posted May 22, 2012 Share Posted May 22, 2012 That skull is fucking disgusting, and I'm not even sure why. I think its weird to see teeth growing so deep inside the skull / close to the eyes even so its totally normal thats not completely normal Link to comment Share on other sites More sharing options...
gmanyo Posted May 22, 2012 Share Posted May 22, 2012 I think it's because of the pockmarked pattern. I've seen multiple things like that that are gross, and know someone who can't look at anything pockmarked. edit: Lol, I was actually thinking of that specific NSFW image that was removed. Makes me want to puke. Shopped doe. Link to comment Share on other sites More sharing options...
azatoth Posted May 22, 2012 Share Posted May 22, 2012 This sentence is false. Adolf Hitler was Time Magazine's 'Man of the Year' in 1938 And G.W.Bush was 2004's lol They sure know how to pick 'em Explains why you were the person of the year in 2006. lol [youtubehd]OPY98eB4w-8[/youtubehd] Pseudoscientific bullshit. Avoid at all cost. Link to comment Share on other sites More sharing options...
Herr Jan Posted May 22, 2012 Share Posted May 22, 2012 Just read this: "A kick in the balls is above 9000 del (units) of pain, which is similar to giving birth to 161 kids and breaking up to 3210 bones at a time." (Probably internet nonsense, I mean, it´s over 9000?!) Link to comment Share on other sites More sharing options...
azatoth Posted May 22, 2012 Share Posted May 22, 2012 Just read this: "A kick in the balls is above 9000 del (units) of pain, which is similar to giving birth to 161 kids and breaking up to 3210 bones at a time." (Probably internet nonsense, I mean, it´s over 9000?!) Sounds like nonsense, how could you quantify something as subjective as pain? Link to comment Share on other sites More sharing options...
gmanyo Posted May 22, 2012 Share Posted May 22, 2012 Nerve response? Science? Guessing? Link to comment Share on other sites More sharing options...
sergeantk Posted May 22, 2012 Share Posted May 22, 2012 Just read this: "A kick in the balls is above 9000 del (units) of pain, which is similar to giving birth to 161 kids and breaking up to 3210 bones at a time." (Probably internet nonsense, I mean, it´s over 9000?!) Sounds like nonsense, how could you quantify something as subjective as pain? neural response. But really it varies greatly from person to person Link to comment Share on other sites More sharing options...
gmanyo Posted May 22, 2012 Share Posted May 22, 2012 This sentence is false.Pseudoscientific bullshit. Avoid at all cost. So I haven't watched this whole thing (made it halfway, got bored), but it seems alright. Just theories based on quantum experiments. Link to comment Share on other sites More sharing options...
azatoth Posted May 22, 2012 Share Posted May 22, 2012 This sentence is false.Pseudoscientific bullshit. Avoid at all cost. So I haven't watched this whole thing (made it halfway, got bored), but it seems alright. Just theories based on quantum experiments. But it's bad theories, based on misunderstandings of quantum theory. Quantum mysticism. Link to comment Share on other sites More sharing options...
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