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An exploration of physics by dimensional analysis : telling a lot of fundamental physics and the amplitudes of diverse effects mainly by multiplying quantities. Some sections have been moved to separate pages:

The speed of light and astronomical distances

The energy of nuclear reactions ; The radius of nuclei

Electromagnetism

The gravitational constant

Effects of General Relativity

The parameters of the atomic structure

The compressibility of condensed matter

The speed of the sound in condensed matter

Temperature(to be continued)

Principle of least action (draft)

Conservation laws (stub)

Comments on the Lagrangian
of the electromagnetic field

- The different notions of curvature in geometry
- Cosmology in General Relativity (evolution of the expansion, cosmological constant)
- The Einstein field equation

- Thermodynamics : classical entropy
- Entropy in information theory
- Entropy in statistical physics
- The simplest proof of the ideal gas law
- Links to other sites on entropy

- Articulations between quantum and classical physics (wave/particle duality, conservation of energy)
- Geometric expression of Markov processes
- Quantum states and measurements
- Quantum correlations
- The EPR paradox
- The double-slit experiment
- Quantum entropy (old draft, to be revised later)
- Quantum decoherence
- Interpretations of quantum physics
- Copenhagen
- de Broglie-Bohm interpretation (Bohmian mechanics)
- The Many-worlds interpretation
- Notes on time orientation and the big bang

- Spontaneous collapse theories
- The Mind makes collapse interpretation
- The Mind makes collapse interpretation of the EPR paradox
- What is Free Will
- Idea of an imaging software for PK or transcommunication
- References (links) on consciousness and quantum physics
- A mind/mathematics dualistic foundation of physical reality written for the fqxi essay contest where the discussion clarifies a few points (but see below about fqxi).
- Problems with Stapp's views

Solved physics problems (for now just one thing about gravitation)