Hi Alessio,
Am 03.02.2011 07:58, schrieb Alessio Bernardelli:
> Interesting question! I only ever used it to mess around with
> pressure demos!
Well, there you have your project for a school class or a citizen
scientist: compare the development of the coffee aroma for coffee stored
in that vacuum thing, in the fridge, in a closed container and in an
open box, with and without opening them regularly.
You can learn a lot about methodology. For example, how do you judge the
aroma? You'll need some double-blind setup where different people taste
the results in order to reduce subjective factors. This can lead to
discussing how medical tests have to be designed in order to be meaningful.
Can be a wonderful project to encourage critical scientific thinking!
Of course, encouraging people to test advertising claims systematically
isn't something you'll get a lot of sponsoring for from BIS or industry.
People may get funny ideas about other kinds of advertising :-)
> On 2 Feb 2011, at 22:52, Stephan Matthiesen<[log in to unmask]> wrote:
>> Interesting - does this thing actually work and preserve the aroma
>> of coffee? It looks interesting, but I would have thought that
>> every time you create a vacuum, you'll lose volatile aromatic
>> substances, so it doesn't work that well if you want to take out
>> some coffee regularly. Has anybody tried that systematically?
Cheers
Stephan
--
Stephan Matthiesen
http://www.stephan-matthiesen.de
Neu auf www.science-texts.de: Wülstig - das Januarmuster
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