Series
How It Works Inside
How does a vending machine spot a fake coin? Where do escalator steps disappear to? We open up the things you touch every day with cutaways and 3D diagrams.
3 episodes YouTube playlist
Episodes
-
How Do Vending Machines Catch Fake Coins?
Inside the machine, three checkpoints — shape, material, and a final match against real coins and notes — send fakes straight back.
-
Where Do Escalator Steps Go?
The step that vanishes at the top flips upside down, travels back beneath the floor, and comes out again at the bottom.
-
How Does a Refrigerator Make Things Cold?
The refrigerant carries heat out of the fridge interior and releases it into the room — that is why the back feels warm.
Also searched ashow it workscutawayeveryday science