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  2. Energy - Wikipedia

    en.wikipedia.org/wiki/Energy

    Examples of large transformations between rest energy (of matter) and other forms of energy (e.g., kinetic energy into particles with rest mass) are found in nuclear physics and particle physics. Often, however, the complete conversion of matter (such as atoms) to non-matter (such as photons) is forbidden by conservation laws .

  3. List of states of matter - Wikipedia

    en.wikipedia.org/wiki/List_of_states_of_matter

    Time crystals: A state of matter where an object can have movement even at its lowest energy state. Hidden states of matter: Phases that are unattainable or do not exist in thermal equilibrium, but can be induced e.g. by photoexcitation. Microphase separation: Constituent units forming diverse phases while also keeping united.

  4. List of electrical phenomena - Wikipedia

    en.wikipedia.org/wiki/List_of_electrical_phenomena

    Capacitive coupling — Transfer of energy within an electrical network or between distant networks by means of displacement current. Contact electrification — The phenomenon of electrification by contact. When two objects were touched together, sometimes the objects became spontaneously charged (οne negative charge, one positive charge).

  5. Physics - Wikipedia

    en.wikipedia.org/wiki/Physics

    For example, atomic and nuclear physics study matter on the smallest scale at which chemical elements can be identified. The physics of elementary particles is on an even smaller scale since it is concerned with the most basic units of matter; this branch of physics is also known as high-energy physics because of the extremely high energies ...

  6. Sources of electrical energy - Wikipedia

    en.wikipedia.org/wiki/Sources_of_electrical_energy

    Light: Energy produced by light being absorbed by photoelectric cells, or solar power. Chemical: Energy produced by chemical reaction in a voltaic cell, such as an electric battery. Pressure: Energy produced by compressing or decompressing specific crystals. Magnetism: Energy produced in a conductor that cuts or is cut by magnetic lines of ...

  7. Plasma (physics) - Wikipedia

    en.wikipedia.org/wiki/Plasma_(physics)

    The spontaneous formation of interesting spatial features on a wide range of length scales is one manifestation of plasma complexity. The features are interesting, for example, because they are very sharp, spatially intermittent (the distance between features is much larger than the features themselves), or have a fractal form. Many of these ...

  8. Category:Matter - Wikipedia

    en.wikipedia.org/wiki/Category:Matter

    Matter and energy are considered interchangeable in modern physics. ... Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; ...

  9. Third grade - Wikipedia

    en.wikipedia.org/wiki/Third_grade

    In science, third grade students are taught basic physics and chemistry. Weather and climate are also sometimes taught. The concept of atoms and molecules are common, the states of matter, and energy, along with basic chemical elements such as oxygen, hydrogen, gold, zinc, and iron. Nutrition is also sometimes taught in third grade along with ...

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