Man... wake up...if you had the same water heated in a straight sided tube instead of up a tiny straw you wouldn't even be able to see the expansion ....it's trickery same as those graphs that zoom on a small percentage instead of showing the whole!
"If you had the same water heated in a staright sided tube instead of up a tiny straw"? A straw is a straight-sided tube. Listen to yerself for Chrissake.