The Sand Terrarium 3D: A Glass Box Lab for Real-World Physics

What the Sand Terrarium Is

The Sand Terrarium 3D is an interactive simulation that allows you to observe physical processes in a virtual lab setting. By pouring sand and water, dropping ice, lighting wood, or releasing lava into a glass terrarium made of 196,608 falling voxels, you can explore the dynamics of these materials under different conditions.

The terrarium is designed with real equations for angle of repose, buoyancy, Fourier conduction, and latent heat. These principles govern how sand settles, water behaves, ice melts, wood burns, and lava hardens.

Why It Happens

The physical phenomena observed in the Sand Terrarium 3D are governed by fundamental laws of physics. For instance, the angle of repose explains why sand forms conical piles when poured, while buoyancy determines whether objects float or sink.

Fourier's law describes heat transfer through conduction, which is crucial for understanding how ice melts and lava hardens. Latent heat plays a key role in phase changes such as water boiling and freezing.

Real-World Applications

The principles demonstrated in the Sand Terrarium 3D have real-world applications in various fields, including geology, materials science, and environmental engineering. For example, understanding the angle of repose is essential for designing stable structures like sand dunes or retaining walls.

Buoyancy considerations are vital in marine engineering, where the design of ships and submarines must account for their ability to float or submerge.

Model Versus Real Notes

While the Sand Terrarium 3D uses real equations to simulate physical processes, it is important to note that some aspects may not be perfectly accurate due to simplifications in the model. For instance, the terrarium does not account for all environmental factors or complex interactions between materials.

Despite these limitations, the simulation provides a valuable educational tool for understanding fundamental physics principles and their real-world implications.

Frequently asked questions

Try it live

Everything above runs in your browser — open Sand Terrarium 3D: Falling Voxels, Elements and Reactions in a Glass Box Lab and change the parameters while it is running. Nothing is installed, nothing is uploaded, the whole model lives in one tab.