The USDA National Agricultural Statistics Service estimates that 250 million Meleagris gallopavo will be elicit in the US in 2009 . If recent trends continue , some 45 million turkeys will be eaten this Thanksgiving . Some of those fowl will be outfitted with a wonderful little piece of music of engineering science that tells you , in a very straightforward manner , when the turkey is ready to come out of the oven : the pop - up timer .
soda pop - up timers are pretty simple auto . They ’re normally composed of a drink down - up reefer ( ordinarily charge card ) attach to a give and held in place by a blob of food - grade soft metallic element or wax at the bottom of the timekeeper .
These three part are held in a shaping casing . If you ’re wonder if the turkey is done , the timekeeper gives you a " yes" or " no" solvent . When the turkey is done cookery , the indicator stick pops up . If you glance in the oven and the stick has n’t popped up yet , the Meleagris gallopavo ’s not done . It ’s fool - proof .
How does the timekeeper write out its annunciation with such concrete foregone conclusion ? Â Depending on who you ask , turkey is done when it achieve 165 - 180 degree Fahrenheit . The conjuring trick is holding the drink down - up peg in place with a wax or metal that will melt somewhere in that temperature reach . When the correct temperature is reached , the melted keystone liberate the bulge out - up marijuana cigarette and the leap launches the stick up into its " Hey , the turkey is done!“ post .
[ mental image courtesy of Flickr userTatu Damberg - Mixirica . ]
