The Magnet Mystery

Oz found the magnets on a Tuesday, sitting in a little tin box at the bottom of Grandpa's junk drawer.

They were beautiful — two smooth, shiny bars, one painted red and one painted blue, each about as long as a crayon. The moment Oz picked them up, something wonderful happened.

CLACK!

The magnets leaped out of his hands and snapped together, just like that, as if they'd been waiting their whole lives to meet.

"Whoa!" Oz whispered.

He pulled them apart — which took a surprising amount of tugging — and held them out again. CLACK! Together again. Like magic. Like the magnets were hungry for each other.

Oz raced downstairs to show his mom.

"Look, look, look!" he said, holding them out on both palms. The magnets jumped together. CLACK!

"Oh, those are Grandpa's old magnets," Mom said, smiling. "He used to play with those for hours."

Oz carried them everywhere that morning. He stuck them to the refrigerator. He stuck them to the mailbox. He stuck them to his bike. He stuck them to the leg of the kitchen table and then forgot about them, and Mom stubbed her toe on one and said a word that Oz pretended not to hear.

He discovered that the magnets could pick up paper clips, and then he discovered that a long chain of paper clips could hang from one magnet like a silver beard, and then he discovered that if you swung the paper clip beard around too fast, paper clips would fly everywhere and land in the macaroni and cheese.

But the very best thing was the way the two magnets snapped together. CLACK! Every single time. Oz never got tired of it.

Then, after lunch, something strange happened.

Oz held the red magnet in his left hand and the blue magnet in his right hand, just like before. He brought them closer together, waiting for the happy CLACK!

But instead — the blue magnet pushed away.

Oz felt it in his fingers. A firm, stubborn, invisible push. Like the blue magnet was saying, "Nope. Not right now."

Oz frowned. He tried again, pressing the magnets toward each other. The closer he pushed, the harder they pushed back. It was the weirdest thing. Like trying to squeeze two pillows together underwater. Like the air between them had turned solid and grumpy.

"Hey!" Oz said. "Stop it! You were friends this morning!"

The magnets didn't care. They pushed and pushed and pushed. When Oz set them on the kitchen table and slid one toward the other, the second magnet scooted away all by itself, like a little animal running from a bath.

Oz's stomach felt funny. Had he broken them? Had he used up all the sticking? Was the magic gone?

He tried again. Push. Push. Push. The magnets refused.

Oz put them back in the tin box, closed the lid, and sat on his bed feeling rotten.

After a while, his older sister, Maya, poked her head in.

"Why do you look like someone cancelled your birthday?" she asked.

"Grandpa's magnets are broken," Oz said. "They used to stick together and now they just push apart. I think I ruined them."

Maya sat down next to him. "Can I see?"

Oz opened the tin box and handed her the magnets. Maya held them up and brought them together.

CLACK!

They snapped together instantly.

"Seems fine to me," Maya said.

"WHAT?" Oz grabbed them back. He pulled them apart and tried again.

Push. Push. Push. Apart.

"See?" Oz said. "Broken! Wait — how did you —"

He stared at the magnets. Then he stared at Maya. Then he stared at the magnets again.

"Do it again," Oz said, handing them back. "Slowly."

Maya held them out. Slowly, slowly, she brought the two ends together. CLACK! Together.

"Now give them to me — just like that — don't turn them."

Maya handed them over carefully. Oz pulled them apart and brought the same ends together again. CLACK!

"HA!" Oz shouted. Then he flipped the blue one around and tried again.

Push.

Oz's eyes went wide. He flipped it back.

CLACK!

Flipped it around.

Push.

Back again.

CLACK!

"Oh. Oh oh oh oh oh," Oz said. "Maya, it's the ENDS!"

"What do you mean?"

Oz was practically bouncing. "This morning, I was holding them one way, and they stuck. After lunch, I must've picked up the blue one the other way around! It's not broken — it matters which END you use!"

He tested it again and again. One way: pull together. The other way: push apart. Same magnets. Same Oz. Different direction.

"Each end is different!" Oz said. He flipped and clacked and pushed and flipped and clacked. "This end likes that end. But THIS end and THAT end? No way. They want nothing to do with each other."

Maya grinned. "I think those are called —"

"Wait," Oz said. "I want to figure it out."

He grabbed a piece of paper and a marker. He drew the red magnet and the blue magnet. He put a star on the ends that pulled together and an X on the ends that pushed apart.

He stared at his drawing.

"The star ends like each other," he muttered. "The X ends like each other. But a star end and an X end? They fight."

Then he paused.

"No, wait." He tested again. Star end of the red magnet near the X end of the blue magnet: CLACK! Star end of red near star end of blue...

Push.

Oz scribbled out his notes and started over.

"Okay. Okay okay okay. The SAME ends push apart. The DIFFERENT ends pull together."

He looked up at Maya with the biggest eyes.

"That's the rule! If both ends match, they push. If they're different, they stick!"

Maya ruffled his hair. "Pretty cool, detective."

Oz spent the rest of the afternoon testing his rule. He tried it on the kitchen table, on the floor, in the bathtub (no water, Mom said), on top of his head, under a blanket, and once while standing on one foot just to make sure standing on one foot didn't change anything. It didn't.

The rule always worked.

Same ends: push apart.

Different ends: pull together.

Every. Single. Time.

At dinner, Oz made the magnets race across the table by pushing one with the other without even touching it — the invisible force shoving the front magnet along like a tiny bulldozer.

"I didn't break them," Oz announced to everyone. "I just didn't understand them yet."

Grandpa, who was visiting for dinner, winked at him. "Took me about a week to figure that out when I was your age. How long did it take you?"

"One afternoon," Oz said proudly. "And I only panicked a little."

"That's my boy," Grandpa said.

That night, Oz put the magnets back in their tin box. But before he closed the lid, he held them up one more time. He brought the different ends together.

CLACK.

He smiled.

Then he flipped one around and felt that strange, stubborn, invisible push — the magnets pressing against nothing, holding each other away.

That was the part Oz liked best, actually. Not the sticking. The mystery push. The invisible force you could feel but couldn't see. The way something could look exactly the same but behave completely differently, just because of which way it was facing.

Oz closed the tin box, set it on his nightstand, and fell asleep wondering what other secrets were hiding in Grandpa's junk drawer.