Naked Science Forum
General Science => General Science => Topic started by: neilep on 08/04/2011 11:38:29
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Dearest Tea-ologists,
As a sheepy I of course luff tea !...though..it's the green stuff and the white stuff I'm into nowadays !..no milk of course !!
We're usually told to always use fresh water because pre-boiled water has lost all it's dissolved oxygen which is essential to the brewing process !
Thing is....when ewe boil the water for the first time anyway...doesn't that also deplete the water of it's oxygen content ?
...and ...I've done taste tests with pre-boiled water and fresh boiled water and I can't taste the difference !!..can ewe ?
so....my question is......Doesn't Freshly Boiled Water Have No Oxygen Anyway When Making Tea ?
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also, please do a taste test yourself and report here if there is a difference !
Ta
Hugs & shmishes
Mwah mwah mwah
Neil
Tea Sheep
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Well, water that's been boiling for any length of time has no oxygen dissolved in it to speak of, but it's all a question of kinetics vs. thermodynamics. That is, although it's not stable for oxygen to be dissolved in boiling water it still takes a little time for all the oxygen to leave.. so water that's been boiled briefly will have more oxygen in it than water kept on the boil or boiled repeatedly.
It's a bit like, say, the difference between having just stepped out of a plane and hitting the ground.. the most stable configuration is having no dissolved oxygen/being at ground level, but it takes a little time to get there.
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It's a bit like, say, the difference between having just stepped out of a plane and hitting the ground.. the most stable configuration is having no dissolved oxygen/being at ground level, but it takes a little time to get there.
I was with you for the first paragraph, Rosy, but then you lost me...
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I'm certainly going to think twice before I have a cup of tea. I had no idea it could be that dangerous. [:o]
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I too am very grateful to Rosy for the first paragraph.....I'm just questioning as to whether I should drink tea when in flight. The consequences for disembarking don't bear thinking about !