# Experiments We review briefly a number of physical experiments that have profound implications for human [freedom](https://www.informationphilosopher.com/freedom/), [values](https://www.informationphilosopher.com/value/), and [communication of ideas](https://www.informationphilosopher.com/knowledge/). We also suggest some simple psychological experiments that could shed light on the workings of [the Cogito](https://www.informationphilosopher.com/freedom/cogito/) model of the mind and [the Sum](https://www.informationphilosopher.com/knowledge/sum/) model of knowledge creation and communication. Quantum Indeterminacy and Nonlocality - [Two-Slit Experiment](https://www.informationphilosopher.com/solutions/experiments/two-slit_experiment/) - [Einstein Podolsky Rosen](https://www.informationphilosopher.com/solutions/experiments/EPR/) - [Bell's Theorem](https://www.informationphilosopher.com/solutions/experiments/bells_theorem/) - [Heisenberg "Cut"](https://www.informationphilosopher.com/problems/heisenberg_cut) - [Heisenberg's Microscope](https://www.informationphilosopher.com/solutions/experiments/heisenberg_microscope/) - [Decoherence](https://www.informationphilosopher.com/knowledge/decoherence.html) - [Nonlocality](https://www.informationphilosopher.com/freedom/nonlocality.html) - [Nonseparability](https://www.informationphilosopher.com/problems/nonseparability) Entropy and Information - [Ergodic Hypothesis](https://www.informationphilosopher.com/solutions/experiments/ergodic_hypothesis) - [Maxwell's Demon](https://www.informationphilosopher.com/solutions/scientists/maxwell/#demon/) - Szilard's Engine - Brillouin's Flashlight - Gibbs Paradox - Perfume Bottle - Dark Night Sky Measurement - [Collapse of the Wave Function](https://www.informationphilosopher.com/solutions/experiments/wave-function_collapse) - [Schrödinger's Cat](https://www.informationphilosopher.com/solutions/experiments/schrodingerscat) - [Wigner's Friend](https://www.informationphilosopher.com/solutions/experiments/wigners_friend) - [Dirac Three Polarizers](https://www.informationphilosopher.com/solutions/experiments/dirac_3-polarizers) - [Stern-Gerlach Experiment](https://www.informationphilosopher.com/solutions/experiments/stern-gerlach) - [The Geiger Counter](https://www.informationphilosopher.com/solutions/experiments/geiger_counter) - [The Photoelectric Effect](https://www.informationphilosopher.com/solutions/experiments/photoelectric_effect) Perception - Gestalt - Phi - the illusion of continuity - Cocktail Party Effect - Eavesdropping Ideas - Visual field suggestions - [Libet's Time Delay](https://www.informationphilosopher.com/solutions/scientists/libet/) Eight experimental observations, with philosophical significance, that you can make yourself - Andromeda galaxy - path integral single photons, older than humanity, yet now! - Brownian motion - you can see random fluctuations, small departures from equailibrium - Cosmic rays - you can see a source of genetic mutations - Geiger counter - you can hear unpredictable events - Ice crystals - large scale information structures - Masking eye saccades - Oil/water membranes - symmetric cell progenitor - Soap/water/air bubbles - symmetric order creation from liquid - Spectral lines - shows atoms do not wear out, their energies do not run down - Stars and planets - spherical structural symmetry - Dark sky - implies universe expansion and/or limited age > creation