| ★ wanayoo — archive 1999 http://www.howstuffworks.com/question48.htm | Nouvelle recherche | Portail wanayoo |
Question of the Day
Question
What makes the pop-up timer work on a turkey?
Answer
Each weekday Marshall Brain answers
questions submitted by the readers of How Stuff Works
in the Question of the Day section of HSW.
You can also view previously answered questions in
the HSW Question Archive.
Here is today's question!
http://teachervision.com/lessonplans/
http://teachervision.com/webcreate/
http://teachervision.com/whatworks/
http://teachervision.com/resources/
Q&A Archive
Asking Questions
A pop-up timer found in a turkey or chicken normally has four parts:
The following picture shows the four pieces:
On the left is a pop-up timer before cooking, and on the right is the same timer after it has popped up.
The soft metal (shown in gray in the diagram) is solid at room temperature and turns to a liquid (melts) at about 175 degrees F (80 degrees C). When the metal turns to a liquid, it frees the end of the red stick that had been trapped in the metal. The spring pops the red stick up and you know the turkey is done.
One little-known fact is that these timers are reusable. If you dip the tip in hot water it will re-melt the metal and you can push the pop-up piece back into the metal. Then let it cool and the pop-up piece will be back in its original position ready to use again!
Sponsored links :
|
|
||||||||||||||||||||||||||||
|
 |
How Stuff Works (http://www.howstuffworks.com) is a production of Howstuffworks.com, Inc. P.O. Box 40492 - Raleigh, NC 27629 See http://www.howstuffworks.com/contact.htm for contact information |
© 1999 Howstuffworks.com, Inc. All rights reserved.
