Solar Cells

Step 1Materials you leave alone need A rag week of tomentum flashing from the hardw atomic number 18 store A transparent CD case galvanizing car equip Sodium bicarbonate or Table salt An galvanizing stove intent glue solder Sheet coat shears for cutting the bull sheet I imply you visit http://scitoys.com there are many projects and interesting kit Step 2How to prepare bulls eye i The first get-go is to cut a piece of the slovenly person sheeting that is well-nigh the size of the burner on the stove. Wash your hands so they dont make any turd or oil on them. wherefore wash the strapper sheet with soap or juiceless cleaner to shake any oil or grease out of it. Use the sandpaper or wire cleanse to well clean the copper sheeting, so that any sulfide or other light corrosion is removed. Next, place the cleaned and dry out copper sheet on the burner and turn the burner to its highest setting. Step 3Cooking the copper i cook the copper for at least 30 min. As the copper gets hotter, the change are replaced with a bareened coating of cupric oxide. This is not the oxide we want, but it will minute take out later, showing the reds, oranges, pinks, and purples of the cuprous oxide layer infraneath. The give way bits of color disappear as the burner starts to sting red. When the burner is glowing red-hot, the sheet of copper will be surface with a calamitous cupric oxide coat. Let it cook for a half an hour, so the filthy coating will be dim. This is important, since a thick coating will flake off nicely, while a thin coat will cheque stuck to the copper. After the half hour of cooking, turn off the burner. come forth the hot copper on the burner to cool slowly. If you cool it too quickly, the black oxide will stay stuck to the copper. Step 4Prepare the cooked copper i When the copper has cooled to mode temperature (this takes about 20 minutes), most of the black oxide will be gone. A light scrubbing with your hands under tra! il water will remove most of the elegant bits. stand pat the temptation to remove all of the black spots...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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