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  2. Asymptotic safety in quantum gravity - Wikipedia

    en.wikipedia.org/wiki/Asymptotic_safety_in...

    An asymptotically safe theory is thus the more predictive the smaller is the dimensionality of the corresponding UV critical surface. For instance, if the UV critical surface has the finite dimension n {\displaystyle n} it is sufficient to perform only n {\displaystyle n} measurements in order to uniquely identify Nature's RG trajectory.

  3. Newton's law of universal gravitation - Wikipedia

    en.wikipedia.org/wiki/Newton's_law_of_universal...

    where F is the gravitational force acting between two objects, m 1 and m 2 are the masses of the objects, r is the distance between the centers of their masses, and G is the gravitational constant. The first test of Newton's law of gravitation between masses in the laboratory was the Cavendish experiment conducted by the British scientist Henry ...

  4. SAFE AIR - Wikipedia

    en.wikipedia.org/wiki/SAFE_AIR

    SAFE AIR (Simulation of Air pollution From Emissions Above Inhomogeneous Regions) is an advanced atmospheric pollution dispersion model for calculating concentrations of atmospheric pollutants emitted both continuously or intermittently from point, line, volume and area sources. It adopts an integrated Gaussian puff modeling system.

  5. Fermat's principle - Wikipedia

    en.wikipedia.org/wiki/Fermat's_principle

    Fig. 1: Fermat's principle in the case of refraction of light at a flat surface between (say) air and water. Given an object-point A in the air, and an observation point B in the water, the refraction point P is that which minimizes the time taken by the light to travel the path APB.

  6. Air permeability specific surface - Wikipedia

    en.wikipedia.org/wiki/Air_permeability_specific...

    Measurement consists of packing the powder into a cylindrical "bed" having a known porosity (i.e. volume of air-space between particles divided by total bed volume). A pressure drop is set up along the length of the bed cylinder. The resulting flow-rate of air through the bed yields the specific surface by the Kozeny–Carman equation: [1]

  7. Lorentz force - Wikipedia

    en.wikipedia.org/wiki/Lorentz_force

    Lorentz force F on a charged particle (of charge q) in motion (instantaneous velocity v). The E field and B field vary in space and time. The force F acting on a particle of electric charge q with instantaneous velocity v , due to an external electric field E and magnetic field B , is given by ( SI definition of quantities [ 1 ] ): [ 12 ]

  8. AOL Mail for Verizon Customers - AOL Help

    help.aol.com/products/aol-mail-verizon

    AOL Mail welcomes Verizon customers to our safe and delightful email experience!

  9. Phlogiston theory - Wikipedia

    en.wikipedia.org/wiki/Phlogiston_theory

    The alchemist and physician J. J. Becher proposed the phlogiston theory.. The phlogiston theory, a superseded scientific theory, postulated the existence of a fire-like element dubbed phlogiston (/ f l ɒ ˈ dʒ ɪ s t ən, f l oʊ-,-ɒ n /) [1] [2] contained within combustible bodies and released during combustion.