system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does wi-fi travel through walls and doors?
gpt
Because it travels in waves, just like sound for example. And, just like sound, solid objects will weaken it's intensity (just like walls and doors). If you were to put a 10 foot thick lead wall in between you and your router, you probably wouldn't receive any signal, but drywall is not as dense, so the waves can travel more freely through the material.