What is the theoretical longest (vertical) straw you could possibly drink from? It's one where the pressure at the top of the straw is 0. If P = atmospheric pressure and ϱ the density of water h=P/(ϱ•g) h=101kPa/(9.81•1000) = 10.3 m [read more: buff.ly/3aMdjyd]
@Rainmaker1973 I think pratically mechanical properties of straw too count, It might collapse due to suction/vacuume.
@Rainmaker1973 College roommates and I did this in 1965 with Tygon tubing. I think we reached ~2/3 atmosphere.
@Rainmaker1973 Pbbly one can drink vegetable oil with a longer straw!!😄
@Rainmaker1973 One has to be careful here: if you are assuming water at room temperature, you should also consider that at the zero-pressure interface it would instantly vaporize.
@Rainmaker1973 I’ll use this very useful info at my next social event! 😁