Explain · Like I'm five version
Quantum Physics in terms of Lego
Is quantum physics just playing with tiny, wobbly Lego bricks that move when you look at them?
Everything in the whole wide world is built out of tiny, invisible building blocks called particles. Think of these like little Lego bricks that are too small to ever see. In the big world, a Lego brick stays exactly where you put it on your bedroom floor. But in the tiny world of quantum physics, these little bricks are very shy. They do not like to sit still in one spot. Instead, they act like they are in lots of different places all at the same time.
When you try to peek at where your little particle brick is hiding, it gets very nervous. As soon as you point your finger to say "There it is," the particle stops being in many places and quickly picks just one. It is just like if your Lego tower was invisible and wiggled about, but snapped into a solid shape the very second your mum walked into the room. It only stays still because you are watching it, which makes playing with your toys very tricky indeed.
Some of these tiny bricks are best friends and always want to stay close. If you take one brick to the kitchen and leave its friend in your toy box, they stay linked together forever. If you spin the one in the kitchen, the one in the toy box spins too, even though there is no string between them. It is like magic, but it is just how the smallest bricks in the universe like to share their secrets.
Where the analogy breaks downLego bricks are solid things that do not disappear when you stop looking at them.
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