The long pendulum
Set the pendulum in motion. Play it, then bring a long pendulum to your personal home.
PLACES TO WANDER
The Glass Atrium
A bright hall of arches, glass, and slow pendulums. Change the angles and watch the light move.
PLAY THE OBJECTS
Something you can change.
The prism lens
Turn it to shift the light. Play it, then bring a prism lens to your personal home.
The light strings
Pluck a string of light. Play it, then bring a light string to your personal home.
THE SCIENCE
A simple pendulum
The small-angle approximation predicts a longer period for a longer pendulum. The simulation integrates the nonlinear equation with damping.
T ≈ 2π√(L/g)OpenStax · Pendulums ↗Inside the world, change the model controls and export its numerical simulation data. The research library separately presents published study results.
Play this experiment ↗Read the research library ↗The Flooded Library
Walk between worn bookshelves. Set a stone into the water and watch the rings reach the light.
Explore the place ↗Roots under a skylightThe Underground Garden
A garden grows under a broken roof. Plant a seed, ring a bell, and follow the water.
Explore the place ↗A roof open to the starsThe Night Observatory
Turn the brass lens, trace an orbit, and find a light that was hidden behind another.
Explore the place ↗Rain outside, warm light withinThe Rain Pavilion
Listen beneath a cedar roof. Redirect the drops and play a quiet rhythm against the water.
Explore the place ↗Stone that answers backThe Resonance Cave
A narrow passage opens into a quiet chamber. Pluck a string and let the cavern answer.
Explore the place ↗A path across open waterThe Tidal Causeway
Follow the stepping stones into the horizon. Each stone holds a different sound.
Explore the place ↗Wind through tall stemsThe Bamboo Grove
Walk through a shifting grove. Touch the hanging pieces and build a small chorus.
Explore the place ↗Your own score
Balance the instruments and record a performance. Music is generated on your device.
A personal home
Keep discoveries, arrange their positions, and export a backup of your collection.
Wander together
Invite one companion to play the objects and explore the same path.