TehBamski@lemmy.world to Asklemmy@lemmy.ml · 3 months agoProfessional Scientists of Lemmy: What is your field of study's, most complex unanswered question?message-squaremessage-square110fedilinkarrow-up1231arrow-down12
arrow-up1229arrow-down1message-squareProfessional Scientists of Lemmy: What is your field of study's, most complex unanswered question?TehBamski@lemmy.world to Asklemmy@lemmy.ml · 3 months agomessage-square110fedilink
minus-squareDogyote@slrpnk.netlinkfedilinkarrow-up13arrow-down1·3 months agoNo one really knows how osmosis works.
minus-squareChrobin@discuss.tchncs.delinkfedilinkarrow-up6·3 months agoI had to derive osmotic pressure for my statistical mechanics exam in my bachelor’s. So in what sense don’t we know?
minus-squareDogyote@slrpnk.netlinkfedilinkarrow-up7·3 months agoWe don’t know what molecular mechanism creates the pressure.
minus-squareOsrsNeedsF2P@lemmy.mllinkfedilinkarrow-up4·3 months agoIsn’t it just water carrying stuff across a concentration gradient?
minus-squarebradorsomething@ttrpg.networklinkfedilinkarrow-up7·3 months agoGravity is just stuff falling, but there’s complexity there, as well.
minus-squareDogyote@slrpnk.netlinkfedilinkarrow-up2·3 months agoNo? Water can’t carry anything across the membrane.
minus-squareOsrsNeedsF2P@lemmy.mllinkfedilinkarrow-up1·3 months agoOh. Then how does the stuff get across the membrane? Does the membrane allow stuff to move over a concentration gradient without the water?
minus-squareDogyote@slrpnk.netlinkfedilinkarrow-up1·3 months agoWater can move freely across the membrane, but the stuff that’s dissolved in the water cannot move across the membrane.
No one really knows how osmosis works.
I had to derive osmotic pressure for my statistical mechanics exam in my bachelor’s. So in what sense don’t we know?
We don’t know what molecular mechanism creates the pressure.
Isn’t it just water carrying stuff across a concentration gradient?
Gravity is just stuff falling, but there’s complexity there, as well.
No? Water can’t carry anything across the membrane.
Oh. Then how does the stuff get across the membrane? Does the membrane allow stuff to move over a concentration gradient without the water?
Water can move freely across the membrane, but the stuff that’s dissolved in the water cannot move across the membrane.