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Learn how to light an LED bulb using a lemon battery and break a world record with Professor Orbax and Sweet Pepper Klopek.
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How do you light this using only these
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Try these experiments at home and break a record. ♪��
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Blow your mind without blowing up your mom's kitchen. ♪♪ Hello, I'm Professor Orbecks
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and this is my assistant, Sweet Pepper Klopek. And today, we're going to be doing
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the Guinness World Records Challenge for the fastest time to light an LED bulb
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using only fruit power. To begin, you'll need four pieces of fruit. ♪��
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I guess today we're using lemons. You're also going to need four different nails
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They need to be galvanized because we require the zinc on them
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You're going to need an LED bulb, perhaps the most important part
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as well as four copper coins. ♪♪ To connect everything, we're going to need
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five alligator or crocodile clips. And finally, you're going to need a voltmeter
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to measure the output of the actual bulb. Now, because this is a speed record
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to assemble the battery and light the bulb, for safety's sake, we're going to allow you
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to cut a hole in the lemon first. Make sure to roll the lemon around a little bit
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just so the juice is evenly distributed throughout the lemon. Cut yourself a small slot
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And insert the coin inside the lemon, making sure it's in contact with the juice
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And make sure you get some help if you need supervision. All right, so it's important to clear a workspace
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You'll need to repeat the rolling, the cutting, and the insertion of the coin for each of your four lemons
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Insert the nail as well. Repeat this for each of your lemons
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And then take the crocodile clips to connect them in series. Connect the nail to the coin
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And continue to connect the circuit around in series. And at the end, you'll have one remaining clip
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going from one nail and one coin, which you'll connect to your LED
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So we're about to connect our LED to our fruit battery. But remember, kids, safety first
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And here... we... go! Science
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And now the most important part, the guidelines. When you begin to make your fruit battery
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you need to start by laying your hands flat on the table. After a countdown
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three, two, one... you may assemble the battery. As soon as the LED is lit
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you'll place your hands back down on the table to signal the timer to stop
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And done. In order for the record to count, you'll still need to actually measure the voltage
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across the LED using a voltmeter. Do this by attaching the pokey bits
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to the bulb itself. Make note of the number. You'll need to send that along with your application
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And now for the science. So why does this work? You've just created a battery using lemons
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The penny and the nail act as the terminals to the battery. And the actual electrons flow back and forth
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between the cathode and the anode due to the acidity of the lemon juice
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