The sci-fi master Arthur C. Clarke once wrote a sentence: "Any advanced enough technology is the same as magic." But he was wrong. The difference between the two is very simple - magic is false, but technology is really useful . For example, people who claim to have "telescope" say they can see something far away, but they have never succeeded in testing. In fact, the clairvoyance is simple: it is television. Give another example. There has been a very popular fake video on the Internet recently: A person charges the iPhone by inserting the USB cable into the onion. How do I determine if it is false? First of all, this requires joints made of two different metals; secondly, an onion alone cannot get enough voltage. However, if the operation is correct, you can still use this method to charge the iPhone. Inserting copper strips and zinc strips into the potatoes can make ordinary vegetable batteries that can generate about 0.5 volts. Zinc produces electrons in the oxidation process, vegetables act as electrolytes, and copper forms complete circuits for the entire device. Stacking several layers of vegetables, zinc and copper in turn will connect the vegetable cells in series and increase their total voltage. At the beginning, I also used onions as raw materials. After peeling a big push onion and tears, I decided to switch to apples. I dug out the apple bars with a fruit nucleus and cut them into small rounds with a cheese slicer. As for the copper sheets and the zinc sheets, it is convenient to grind the copper on one side of the copper-plated zinc coins. After about 150 such apple slices and coins were made, I arranged them into 6 sets of parallel batteries according to the sequence of apple slices - zinc flakes - copper flakes. In this way, they can generate enough power to charge an iPhone, but it can only last for about 1 second (a slice made of large zinc and full apples can generate more power and last longer). If you make a battery from 200 apple slices and coins, the voltage will be higher, and I can use it to create a visible and lethal spark. In other words, as long as the method is correct, you can use an apple to kill yourself. Led Linear Light,Flexible Led Strip Lights,Wall Decor Led Linear Lights,Led Linear Light For Floor Top Lighting International (HK) Co., Limited , https://www.topled-group.com