Monday - July 28, 2008
The “Duh” Invention that only took 35 years to come to market
I think it’s really annoying to heat some soup or some leftovers in the microwave only to find the plate or bowl red hot and the food still lukewarm. I never understood this, as I had always heard that microwaves heated things up by making the water molecules vibrate. Well, it turns out that’s still correct, but what I didn’t pick up on was the ability of the containers to absorb heat. From the food! Now there is a new kind of container about to hit the market that ... hold onto your hats here ... actually gets hot when you microwave it!
Conventional coffee cups are made from ceramic compositions which do not absorb microwaves and hence they do not heat up,” explained Sridhar Komarneni, a professor of clay mineralogy at Pennsylvania State University. “When conventional ceramics are used for heating food, only food heats up and then the hot food heats up the ceramic.”
Komarneni and colleagues in Japan made plates from a mix of 20 percent magnetite and 80 percent of a naturally occurring petalite (LiAlSi4O10) mineral containing lithium, aluminum and silicon oxides. The new ceramic interacts with the microwaves and heats up, and “the microwaves heat up the container and hence the food,” Komarneni told LiveScience. “Rice cooks in about half or less time.”
...
“These ceramic materials not only heat up with microwaves but also retain heat for about 15 minutes and hence the food stays hot in the container,” Komarneni said. “Ceramic plates could be used for pizza delivery as these plates are insulating materials.”
Cooking or heating your food in half the time is sure to save quite a bit of electricity too. Just get in the habit of using potholders again. Given the proper shaped container, microwave popcorn should take about half the time too. Oh boy!
Posted by Drew458
on 07/28/2008 at 01:49 PM
Filed Under: • Amazing Science and Discoveries •
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