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- scanning tunneling microscopeA scanning tunneling microscope (STM) is a type of electron microscope. It is much more powerful than an ordinary microscope(...) Read More
- Schrodinger's Cat Experiment[This article is under construction.] The Schrodinger Cat(...) Read More
- singularity“Singularity” has a physics definition and a mathematical definition. Both definitions are given here. They fit together(...) Read More
- Sommerfeld's ConstantSee alpha, α. Read More
- spinSpin is a property of subatomic and atomic particles. While spin was originally thought of as a particle twirling on its(...) Read More
- static systemSee dynamic system. Read More
- Stern-Gerlach device(Also called a “Stern-Gerlach machine.”) The Stern-Gerlach (SG) device detects the “quantum spin” of atoms and subatomic(...) Read More
- superpositionClick for quantum superposition or click for superposition of classical waves. Read More
- superposition, classical wavesThis article is about superpositions of waves as understood In classical physics. See superposition, quantum mechanics for(...) Read More
- superposition, quantumThe term "superposition" is used in both classical physics and quantum physics. In this article, "superposition" is(...) Read More
- systemIn science, the term "system" takes the place of the common English words "thing" or "entity." Scientists use the term(...) Read More