TehBamski@lemmy.world to Asklemmy@lemmy.ml · 1 year agoProfessional Scientists of Lemmy: What is your field of study's, most complex unanswered question?message-squaremessage-square108linkfedilinkarrow-up1233arrow-down12
arrow-up1231arrow-down1message-squareProfessional Scientists of Lemmy: What is your field of study's, most complex unanswered question?TehBamski@lemmy.world to Asklemmy@lemmy.ml · 1 year agomessage-square108linkfedilink
minus-squareDogyote@slrpnk.netlinkfedilinkarrow-up13arrow-down1·1 year agoNo one really knows how osmosis works.
minus-squareChrobin@discuss.tchncs.delinkfedilinkarrow-up6·1 year 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-up8·1 year agoWe don’t know what molecular mechanism creates the pressure.
minus-squareOsrsNeedsF2P@lemmy.mllinkfedilinkarrow-up4·1 year agoIsn’t it just water carrying stuff across a concentration gradient?
minus-squarebradorsomething@ttrpg.networklinkfedilinkarrow-up7·1 year agoGravity is just stuff falling, but there’s complexity there, as well.
minus-squareDogyote@slrpnk.netlinkfedilinkarrow-up2·1 year agoNo? Water can’t carry anything across the membrane.
minus-squareOsrsNeedsF2P@lemmy.mllinkfedilinkarrow-up1·1 year 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-up1·1 year 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.