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                                                                           Hello everybody. Now we are going to make concentrated sulfuric acid from battery acid. Also you can use other types of sulfuric acid. However concentrated sulfuric acid is extremely dangerous. So you must be careful when working with it.                                    In this experiment I used battery acid. It has 29% to 32% of sulfuric acid. It means, if we get 50ml of batt...

Hello everybody! I made my white color LED bulb into a bi-color LED bulb. To see how I made it, click the link bellow. http://www.instructables.com/id/White-LED-Bulb-Into-a-Bi-color-LED-Bulb/

Hi everybody. Since last month I tried make a large salt crystal. But I couldn't. However I could make small salt crystals.