Physics & Chemistry Entities The Wolfram Knowledgebase contains many entity types related to physics and chemistry. In Version 12, coverage ranges from elementary particles to macroscopic physical systems, as well as formulas and physical constants, among others. Tight integration of built-in physical and chemical data with the Wolfram Language unit system and computational power facilitates modeling natural phenomena using an efficient workflow for cross-disciplinary science. Physical domains include particles, isotopes, minerals, among others. Chemical entity types include elements, chemicals and proteins. Abstract data and formulas related to physical systems and constants. Observational physics data covering lasers and instrumentation. Over 300,000 chemical and physical entities. Directly usable in a computational way. Related Examples Visualize Particle Energy Spectra and Properties » Explore Isotopes and Binding Energies » Experimentally Derive the Periodic Table » Learn How Melting and Boiling Points of Chemicals Vary » Query for Properties of Minerals » Study a Variety of Famous Gems » Discover the Structural Complexity of Proteins » Exploring Symmetries of Crystal Systems » Obtain Laser Wavelengths and Types » Create a Periodic Table of Spectral Lines » Compare Color Sets and Color Spaces » Observe Helium Transitions within the Visible Spectrum »