As the aluminum is heated, the current tries to flow through it. If the aluminum were a smooth piece, the current could flow very easily and unrestricted. But your chip bag is not smooth, it is pretty crinkly, and gets more so as it heats up.
When the large current flowing through the bag reaches a crack in the foil, it will want to keep flowing, and if there is no foil, the next place it will flow through is the air. Because air is not a good conductor electricity does not flow through air very well , it involves ripping electrons off their atoms, making it very hot and producing a lot of energy. This energy gets released as light, making a spark. Because the hot air heats up so quickly, it expands explosively, making a snapping sound.
Skip to content. Local Headlines. Latest Newscasts. Latest Headlines. Latest Forecasts. Sunrise Open House. Healthier Hawaii. What's Trending. Howard's Business Report. They generally are not recyclable in most cities since they are made of mixed commodities that cannot be separated. Take a bag of potato chips. This shiny material is a metallized polymer layer that is usually coated with aluminum.
Instructions Included Assembled, the bag measures approx. Skip to content Users questions. Cook the bag for ten minutes. Place the tray in the preheated oven and allow to bake for 10 minutes.
Check the bag every 2 minutes to gauge its progress and make sure the bag is not being damaged. After the ten minutes are complete, remove the tray and peel the parchment paper apart to reveal your tiny chip bag. Take care when removing the tray and handling the bag.
Both will be hot after their baking period. The bags will be small and hard, and generally difficult to shape. The bags become easier to bend if they aren't fully shrunk. Method 2. Note that the aluminum lining the inside of most chip bags will cause sparks in the microwave.
If you choose to use the microwave to shrink the bag, watch the bag very carefully. Place the bag in the microwave for 5 seconds. Keep your eyes on the bag at all times. The bag will likely spark, but should not ignite provided it does not "cook" for more than a few seconds. If the bag ignites into flames, turn off the microwave!
Allow the bags to cool. The chip bags will be very hot to the touch. Leave them in the microwave for 3 to 5 minutes before handling them. You may also use oven gloves or tongs to remove the bag if you wish to cool them elsewhere. Don't try shrinking multiple bags at a time in the microwave. This will increase the amount of time required to shrink each bag, which can lead to a greater risk of the bags igniting into flame. Method 3. Punch a hole in the corner to make a keychain.
Use a paper hole puncher to create a small hole in the corner of the bag. Carefully thread a keychain loop through the hole to make a colorful and stylish accessory for your key chain. This also provides some additional heft to the bag.
Scissors or an awl can also be used to create a hole for the keychain loop if you don't have a hole puncher handy. Decorate your backpack or purse.
Secure the shrunken bag to your backpack or purse with a safety pin. They make a great addition to the decorative buttons and pins that are common on backpacks. Lapel pins and studs can also be used to secure the bag to your backpack. They are used for many purposes, like communication, in radars, and are probably best known — in cooking. A microwave oven creates microwave radiation that, when passing through food, creates dielectric heating.
Simply put, dielectric heating is when an electromagnetic field disturbs molecules that start to move. These molecules now push, pull, and collide with each other. These movements and collisions create heat. The amount of temperature created is related to the kinetic energy energy of motion of the atoms or molecules in a material.
So setting the molecules in motion increases the temperature of the material. It is said that Percy L. Spencer discovered microwave heating properties by accident. One day while he was standing next to a radar set, he noticed that the candy bar in his pocket started to melt. That led him to research the phenomena more and eventually to build the first microwave oven. Watch the video at the beginning of the article for a video guide, or continue reading for step-by-step instructions on making the shrinking bag experiment.
To get the bag of chips we all know and love, it needs to be processed in a factory using polymers and other materials. Polymers that are used to produce chips bags have a tendency to be disorganized and clumped together. But they can be heated and stretched to make the needed shape for the bags we all know today. And that process of manufacturing bags makes polymers stretched out and locks them in that position.
This is done to make the bag lighter and easier for transportation and general use.
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