Proof of full COVID-19 vaccination is now required for all visitors ages 12+. Plan your visit
Cloud Chamber
Look down into the chamber and you’ll see an ongoing cascade of thin white trails appearing and disappearing. These are cosmic ray tracks, created by high-energy subatomic particles from space.
Where: Crossroads: Getting Started
Fluorescent Tube
Powder inside a fluorescent tube makes invisible light visible.
Where: This exhibit is not currently on view.
Liquid Litmus
See the chemical reactions taking place in an electrolytic cell, as electricity flowing through a tank of salt water and pH-indicating dye creates zones of acidic (yellow) and basic (blue) solutions.
Where: Crossroads: Getting Started
