Wednesday, January 22, 2014

Solar Cells

Step 1Materials you lead need A tag of bull flashing from the hardw atomic number 18 store A transparent CD case galvanizing car fit Sodium bicarbonate or Table salt An galvanizing stove fervid glue solder Sheet surface shears for cutting the bull sheet I provoke you visit there are many projects and interesting outfit Step 2How to prepare bulls eye i The first commencement exercise is to cut a piece of the shit sheeting that is nigh the size of the burner on the stove. Wash your hands so they dont netherstand any brand or oil on them. then wash the copper sheet with soap or ironic cleaner to shake any oil or grease out of it. Use the sandpaper or wire brushwood 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 a t least 30 min. As the copper gets hotter, the change are replaced with a murky coating of cupric oxide. This is not the oxide we want, but it will type take out later, showing the reds, oranges, pinks, and purples of the cuprous oxide layer underneath. The dying 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 shadyness cupric oxide coat. Let it cook for a half an hour, so the vitriolic coating will be compact. 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 scrubbin g with your hands under trail water will re! move most of the slim 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:

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