### science | natural science | physics:

Classic physics
* explains most physical interactions , like why a ball bounces when it drops.
+ Schrödinger's cat: Quantum mechanics :: Basic physics ideas
  * Classic physics explains most physical interactions, like why a ball bounces when it drops. It can also be used to predict physical interactions, like what will happen when you drop a ball. Quantum mechanics provides a way for physicists to explain why these things happen.

Classical physics
* assumes a continuum whereas quantum physics assumes the universe is discrete.
* includes mechanics, heat, sound, electricity, magnetism, and light.
* is based on the proposition that the answer to the question is yes.
* takes no account of radiation.

Crystallography
* can be a complex and time-consuming effort.
* concerns the form and internal structure of crystals.
* is well integrated in the swiss scenery of science and research.
* provides an accurate way to identify potentially therapeutic compounds.

### science | natural science | physics:

Experimental physics
* expands, and is expanded by, engineering and technology.
* focuses mainly on an empirical approach.
* requires careful observation and investigation of physical systems.
* wide field full of possible avenues for exploration.
+ Physics, Advanced knowledge, Approaches in physics
  * The data in some subfields of physics is amenable to experiment. For example, condensed matter physics and nuclear physics benefit from the ability to perform experiments. Experimental physics focuses mainly on an empirical approach. Sometimes experiments are done to explore nature, and in other cases experiments are performed to produce data to compare with the predictions of theories.

Law of physics
* All laws of physics are restrictions of our free wills.
* Laws of physics require that air flow from from higher pressures toward lower ones.

Mathematical physics
* has much in common with mathematical ecology, for instance.
* is the rigorous mathematical study of structures which occur in physics.
* is the study of mathematical systems that stands for physical phenomena
  - nature using advanced mathematics

Modern physics
* considers an electron to be both a particle and a wave.
* consists of relativity and quantum, atomic, nuclear and particle physics.
* has no explanation for particle masses.
* holds that all dynamics are quantum dynamics, even at the cosmological level.
* is the successor to the unnatural physics of Newton.
* refers to the subtle body realm in various ways.
* shows the microcosm as mirror of the macrocosm.

Molecular physics
* examines the structure, properties, and behavior of molecules.
* reduces to atomic physics.

Newtonian physics
* affects every object down to the Atom.
* assumes a direct connection between cause and effect.
* explains the behavior of planets.
* predicts that an oven at a stable constant temperature has infinite energy.

Nuclear physics
* frontier field, with strong links to other branches of physics.
* is built on a theory known as quantum chromodynamics
  - concerned with the properties of the atomic nucleus
  - the study of the properties and interactions of nuclei and their constituents
* subject of theoretical research.
* unleases the bomb and nuclear energy.

Particle physics
* is perhaps the most fundamental of sciences, but astronomy is the oldest.
* lot like mountain climbing.
* relies heavily on lots of data with good statistics.

Plasma physics
* is an important branch of modern science
  - at the root of understanding the ionosphere and magnetosphere
  - one of the larger fields in physics
* is the basis of solar-terrestrial physics
  - study of high-energy subatomic particles that occur naturally in space
* utilizes classical mechanics, electromagnetic theory and statistical physics.