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Okay, I want you to go to your fridge, open it up, and pull out a totally normal, bumpy green pickle. Now, imagine taking two electrical wires, jabbing one wire into the left side of the pickle, jabbing the other wire into the right side, and then plugging it directly into the wall outlet.
What do you think happens? Does the pickle explode? Does it cook? Does it catch on fire?
Nope. Instead, the pickle starts buzzing like a giant angry bee, and then the entire vegetable begins to glow so bright it lights up the room. It glows a brilliant, blinding, neon-yellow color, literally acting exactly like a weird, edible lightbulb.
This isn’t a joke. You can actually electrocute a pickle to make it glow in the dark. It is one of the funniest, strangest science experiments ever invented. Let me break down exactly why this ridiculous trick actually works.
It’s All About the Juice
If you tried this trick with a normal cucumber, nothing would happen at all. The electricity wouldn’t have any way to travel through it. So, why does a pickle work?
It all comes down to how a pickle is made. To turn a cucumber into a pickle, you have to soak it in a massive jar of extremely salty brine for weeks. The pickle physically absorbs tons and tons of salt water.
In chemistry, salt is called Sodium Chloride. When you dissolve salt into water, it breaks apart into tiny, electrically charged pieces called ions. These tiny little salt ions are incredible at carrying electricity. They basically act like microscopic metal wires running through the entire pickle.
So, when you plug the pickle into the wall, the electricity shoots through the wires, hits the pickle, and uses the salt water to blast its way from one end of the vegetable to the other. If you want to dive deep into exactly how saltwater conducts electric currents, the brilliant physicists at the Institute of Physics (IOP) have all the math you could ever want.
The Neon Yellow Glow
Okay, so the electricity travels through the pickle. But why does it glow super bright neon-yellow? Why doesn’t it glow blue, or red, or green?
This comes down to the Sodium hiding inside the salt.
When the electricity blasts through the Sodium atoms, it hits the tiny electrons spinning around the outside of the atom. The electricity pumps those electrons full of intense, crazy energy. The electrons jump up, freak out, and then realize they have way too much energy. They have to get rid of it.
How do atoms get rid of excess energy? They shoot it out as pure light!
Every element on the periodic table glows a very specific, unique color when you electrocute it. Copper glows green. Potassium glows purple. Neon glows red. And Sodium? Sodium naturally glows an incredibly bright, intense yellow.
Because the pickle is packed with Sodium salt, the electricity forces the entire pickle to blast out yellow light exactly like a neon sign. You can read more about how scientists use this exact trick to figure out what stars in deep space are made of over at the American Astronomical Society (AAS).
The Stinking Truth
While this looks incredibly cool, there is a major downside: The smell.
When you blast 120 volts of electricity through a salty pickle, the electricity actually starts cooking the vegetable from the inside out. The pickle gets super hot, starts to boil its own juice, and creates thick, horrible-smelling smoke. It smells exactly like burning vinegar and roasted garbage.
Because you are literally playing with deadly 120-volt wall electricity, this is an experiment you absolutely cannot do at home without a professional science teacher. If you touch the pickle or the wires while it is plugged in, the electricity will travel through you instead of the pickle, which is incredibly dangerous!
Teachers usually build a safe, enclosed stand for this and always wear heavy-duty Electrical Safety Gloves. To prove you are serious about lab safety, you might also want a thick pair of Clear Safety Glasses just in case the pickle accidentally pops!
For the serious safety protocols regarding electrical currents in classrooms, always check the Occupational Safety and Health Administration (OSHA).
Quick Glowing Pickle Summary
What you need:
– One large, very salty dill pickle
– A wooden stand with two clean nails hammered into it
– A power cord stripped at one end to expose the copper wires
– A wall outlet with a safety switch
– A professional science teacher! (Do NOT do this alone!)
Step-by-step guide:
1. Make sure your power cord is totally unplugged!
2. Stick the pickle onto the two nails on your wooden stand.
3. Attach one copper wire to the left nail, and the other wire to the right nail.
4. Step far back and turn off the lights in the room.
5. Have your teacher flip the safety switch to turn the electricity on.
6. Watch as the pickle buzzes, steams, and then glows bright neon-yellow like a bizarre, edible lightbulb!
10 Electrified Brain Teasers
Think your brain is fully charged? See if you can light up the answers to these 10 riddles!
1. The Riddle: I am the bumpy green vegetable that lights up like a lightbulb when you plug me into the wall. What am I?
The Answer: A pickle.
2. The Riddle: I am the invisible energy that blasts through the wires and forces the vegetable to glow. What am I?
The Answer: Electricity.
3. The Riddle: I am the specific white kitchen mineral hiding inside the pickle juice that actually carries the electrical current. What am I?
The Answer: Salt.
4. The Riddle: I am the tiny, microscopic piece of the atom that jumps up and shoots out light when it gets hit by electricity. What am I?
The Answer: An electron.
5. The Riddle: I am the incredibly bright, neon color that the Sodium inside the pickle naturally glows. What color am I?
The Answer: Yellow.
6. The Riddle: If you electrocuted a pickle soaked in Copper instead of Sodium, what color would it glow?
The Answer: Green.
7. The Riddle: I am the thick, terrible-smelling gas that starts pouring out of the pickle as it gets cooked from the inside out. What am I?
The Answer: Smoke (or steam).
8. The Riddle: I am the heavy-duty safety gear you absolutely must wear on your hands when messing with live wall voltage. What am I?
The Answer: Electrical gloves.
9. The Riddle: I am the normal, unsalted garden vegetable that a pickle used to be before it took a bath in salty brine. What am I?
The Answer: A cucumber.
10. The Riddle: I am the government agency that writes strict safety rules to stop people from accidentally electrocuting themselves. What am I?
The Answer: OSHA.
The Wrap Up
The Glowing Pickle is probably the most ridiculous-looking science experiment in history, but it teaches an incredibly important lesson.
It proves that electricity doesn’t just travel through metal wires; it can travel through anything that contains charged salt water. It also proves that when atoms get too much energy, they panic and throw that energy away as pure light. To read more about how scientists use this weird atomic light to study elements, bookmark the American Chemical Society (ACS). Now you know why you shouldn’t put vegetables in the toaster!
Cited Sources & Evidence
- Institute of Physics (IOP)
- American Astronomical Society (AAS)
- Occupational Safety and Health Administration (OSHA)
- American Chemical Society (ACS)