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  2. Negative energy - Wikipedia

    en.wikipedia.org/wiki/Negative_energy

    Gravitational energy, or gravitational potential energy, is the potential energy a massive object has because it is within a gravitational field. In classical mechanics, two or more masses always have a gravitational potential. Conservation of energy requires that this gravitational field energy is always negative, so that it is zero when the ...

  3. Electrostatic induction - Wikipedia

    en.wikipedia.org/wiki/Electrostatic_induction

    e. Electrostatic induction, also known as "electrostatic influence" or simply "influence" in Europe and Latin America, is a redistribution of electric charge in an object that is caused by the influence of nearby charges. [ 1] In the presence of a charged body, an insulated conductor develops a positive charge on one end and a negative charge ...

  4. Paradox of radiation of charged particles in a gravitational ...

    en.wikipedia.org/wiki/Paradox_of_radiation_of...

    The paradox of a charge in a gravitational field is an apparent physical paradox in the context of general relativity. A charged particle at rest in a gravitational field, such as on the surface of the Earth, must be supported by a force to prevent it from falling. According to the equivalence principle, it should be indistinguishable from a ...

  5. Flash memory - Wikipedia

    en.wikipedia.org/wiki/Flash_memory

    The degradation increases the amount of negative charge in the cell over time due to trapped electrons in the oxide and negates some of the control gate voltage, this over time also makes erasing the cell slower, so to maintain the performance and reliability of the NAND chip, the cell must be retired from use.

  6. Dirac sea - Wikipedia

    en.wikipedia.org/wiki/Dirac_sea

    Electrons are fermions, and obey the exclusion principle, which means that no two electrons can share a single energy state within an atom. Dirac hypothesized that what we think of as the "vacuum" is actually the state in which all the negative-energy states are filled, and none of the positive-energy states. Therefore, if we want to introduce ...

  7. Charge conservation - Wikipedia

    en.wikipedia.org/wiki/Charge_conservation

    In particle physics, charge conservation means that in reactions that create charged particles, equal numbers of positive and negative particles are always created, keeping the net amount of charge unchanged. Similarly, when particles are destroyed, equal numbers of positive and negative charges are destroyed. This property is supported without ...

  8. FDA issues warning to Dollar Tree over its failure to remove ...

    www.aol.com/finance/fda-issues-warning-dollar...

    The FDA sent a letter to Dollar Tree, Inc. in response to the company's failure to promptly remove a recalled product from WanaBana last October.

  9. Energy condition - Wikipedia

    en.wikipedia.org/wiki/Energy_condition

    Energy condition. In relativistic classical field theories of gravitation, particularly general relativity, an energy condition is a generalization of the statement "the energy density of a region of space cannot be negative" in a relativistically phrased mathematical formulation. There are multiple possible alternative ways to express such a ...