Half a croissant, on a plate, with a sign in front of it saying '50c'
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Time compression microwave

Standardize on times for a 650W microwave
 
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Food that has microwave cooking instructions on the label usually list times for a 650W microwave and sometimes times for a higher power microwave, for example 850W. Maybe I'm just unlucky but I never seem to find a microwave that matches the instructions.

My proposed microwave is more powerful than 650W but accepts times for a 650W microwave. It simply ticks through the seconds faster than real time. You enter four minutes, and it counts through them, stopping after maybe 3'30 of real time.

I realise that cooking times are not exactly inversely proportional to power (nor exact at all), but I think this would be better than my current process of thinking "Hmm, this is 900W, I'll knock off 15 seconds from the 850W time". My main goal is to simplify the instructions on packaging. I think manufacturers would go for this as well, as it gives the user a better indication of what they've spent their extra money on ("Wow, that four minutes flew by on my new 1000W microwave!")

Srimech, Mar 10 2009

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       To get the same amount of energy into the food. Then use the equation:   

       ty = your time   

       py = your microwave power   

       tr = recommended time   

       pr = recommended microwave power   

       ty * py = tr * pr   

       ty = tr * pr/py   

       Now this doesn't allow for the rate of heat transfer within the food its self, which will slightly alter the maximized time value.
knowtion, Mar 10 2009
  
      
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