Wendy, I suspect that there's more science communication and less
politics over in the small-and-friendly BIG-chat email list (I see that the
emissions spectra of pickled gherkins hooked up to the mains are one
"current" topic). I bet you get some answers there for free straight away,
even if your cross-posting to ASTC-L doesn't come up with the goods.
Ian Russell * [log in to unmask]
Successful learning environments are
more exploratory than explanatory.
* * * www.interactives.co.uk * * *
----- Original Message -----
From: wendy.sadler <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, September 19, 2000 9:00 PM
Subject: Sour taste and floating arms?
> An intriguing subject....!
>
> A couple of questions I need help with to explain some demos...
>
> 1. Why does orange juice taste bitter after you brush your teeth? I read
> that it was because the foaming action of toothpaste blocked the sweet
> receptors on your tongue and so all you could taste was the citric acid.
> However if this is the case, why do mint sweets or chewing gum do the same
> thing when they don't foam?
>
> 2. Can anyone explain why, when you stand in a doorway and press the backs
> of your hands hard against the door frame for 60 seconds or so, then step
> forward and relax, your arms float upwards?
>
> Please help!
>
> Thanks
>
> Wendy Sadler
> Techniquest
>
>
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