Simple one compared to guessing how some made up state of hydrogen would behave in the real world......
Our kettle broke down recently, so for a few days we boiled water in a saucepan on the hob. As any of you who know anything about tea are aware, it is important to pour the water onto the tea leaves at as close to boiling point as possible, but this proved almost impossible using a saucepan, because the hot water would hiss and spit, and spurt quite some distance from where it would tip by gravity alone, and do so in an uncontrolled and pretty unpredictable manner.
What's going on here? Why does the water behave this way when it comes into contact with the cooler metal of the saucepan body above the level at which the water boiled? It's something to do with dissolved gases in the water, I presume.....
Our kettle broke down recently, so for a few days we boiled water in a saucepan on the hob. As any of you who know anything about tea are aware, it is important to pour the water onto the tea leaves at as close to boiling point as possible, but this proved almost impossible using a saucepan, because the hot water would hiss and spit, and spurt quite some distance from where it would tip by gravity alone, and do so in an uncontrolled and pretty unpredictable manner.
What's going on here? Why does the water behave this way when it comes into contact with the cooler metal of the saucepan body above the level at which the water boiled? It's something to do with dissolved gases in the water, I presume.....
via International Skeptics Forum http://ift.tt/2j4RQFW
Aucun commentaire:
Enregistrer un commentaire