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  2. Mach's principle - Wikipedia

    en.wikipedia.org/wiki/Mach's_principle

    Local inertial frames are affected by the cosmic motion and distribution of matter. The universe is spatially closed. The total energy, angular and linear momentum of the universe are zero. Inertial mass is affected by the global distribution of matter. If you take away all matter, there is no more space.

  3. Turbulent diffusion - Wikipedia

    en.wikipedia.org/wiki/Turbulent_diffusion

    Turbulent diffusion is the transport of mass, heat, or momentum within a system due to random and chaotic time dependent motions. [1] It occurs when turbulent fluid systems reach critical conditions in response to shear flow, which results from a combination of steep concentration gradients, density gradients, and high velocities.

  4. Matter creation - Wikipedia

    en.wikipedia.org/wiki/Matter_creation

    Because of momentum conservation laws, the creation of a pair of fermions (matter particles) out of a single photon cannot occur. However, matter creation is allowed by these laws when in the presence of another particle (another boson, or even a fermion) which can share the primary photon's momentum. Thus, matter can be created out of two photons.

  5. Conservation law - Wikipedia

    en.wikipedia.org/wiki/Conservation_law

    With respect to classical physics, conservation laws include conservation of energy, mass (or matter), linear momentum, angular momentum, and electric charge. With respect to particle physics, particles cannot be created or destroyed except in pairs, where one is ordinary and the other is an antiparticle.

  6. Conservation of mass - Wikipedia

    en.wikipedia.org/wiki/Conservation_of_mass

    Many other convection–diffusion equations describe the conservation and flow of mass and matter in a given system. In chemistry, the calculation of the amount of reactant and products in a chemical reaction, or stoichiometry, is founded on the principle of conservation of mass. The principle implies that during a chemical reaction the total ...

  7. Relativistic mechanics - Wikipedia

    en.wikipedia.org/wiki/Relativistic_mechanics

    In some situations, matter may indeed be converted to non-matter forms of energy (see above), but in all these situations, the matter and non-matter forms of energy still retain their original mass. For isolated systems (closed to all mass and energy exchange), mass never disappears in the center of momentum frame, because energy cannot disappear.

  8. 115 Relatable Quotes About Overthinking to Inspire ... - AOL

    www.aol.com/115-relatable-quotes-overthinking...

    "Don’t get too deep, it leads to overthinking, and overthinking leads to problems that don’t even exist in the first place." - Jayson Engay “Thinking has, many a time, made me sad, darling ...

  9. Curved spacetime - Wikipedia

    en.wikipedia.org/wiki/Curved_spacetime

    In special relativity, mass-energy is closely connected to momentum. Just as space and time are different aspects of a more comprehensive entity called spacetime, mass–energy and momentum are merely different aspects of a unified, four-dimensional quantity called four-momentum. In consequence, if mass–energy is a source of gravity, momentum ...