APS Logo Kids
Computer ChipMagnifying GlassCrystalCaliper with AtomQuantum CorralSuperconductivitySTMRandom Walk Random Walk

Small particles floating in water will bump into water molecules. This causes them to move around randomly. Einstein’s explanation of this random motion was convincing evidence that molecules were real.

Random Walk Tile Random Walk Line Art
Random Walk Kid

Artwork Columns:
Matter | Quantum | Relativity | Einstein's Life

Terms of Use | © 2012 American Physical Society