Why are CLOTHES darker when wet (only for curious)?

Clothes get darker when they're wet because water changes how light behaves on them.

Imagine your favorite shirt is like a sponge, it can soak up things. When it's dry, the light bounces off its surface and reaches your eyes. But when you put it in the wash or splash it with water, the fabric soaks up the water, making it harder for light to bounce back.

Think of it like this: when clothes are wet, they’re like a cloudy window, light can’t go through as easily, and that makes everything look darker. It's similar to how your skin looks darker when you're sweaty or wet, the water mixes with the dirt and makes everything more visible.

Not all clothes get darker when wet, it depends on what they’re made of. Some fabrics, like cotton, are really good at soaking up water, which is why they go dark. Others, like polyester, don’t soak up water as much, so they stay lighter even when wet.

So next time you notice your shirt looking darker after a rainstorm or a splash in the pool, it’s just doing its job, like a sponge or a cloudy window!