Richard Gagnon
In a historic maintenance video for the exhibit Black Sand, exhibit developer Richard Gagnon explains how it came to be and how it's taken care of.
Related Exhibits
Bicycle Wheel Gyro
Tilt a spinning bicycle wheel while you’re sitting in a swivel chair and—surprise—you’ll start spinning in circles, too. You can also witness the same phenomenon here by hanging a spinning wheel from its axle.
Where: Crossroads: Getting Started
Black Sand
At this simple but ever-popular exhibit, black sand from nearby beaches make spiky patterns that reveal the invisible magnetic field between the poles of two giant magnets.
Where: Ray and Dagmar Dolby Atrium
Life on the Rocks
All these organisms are adapted to life in California's rocky tidal zone.
Where: Gallery 4: Living Systems
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
Square Wheel
A square wheel can roll smoothly—if the "road" is the right shape.
Where: This exhibit is not currently on view.
