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  2. Dispersion (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Dispersion_(chemistry)

    Dispersion is a process by which (in the case of solid dispersing in a liquid) agglomerated particles are separated from each other, and a new interface between the inner surface of the liquid dispersion medium and the surface of the dispersed particles is generated. This process is facilitated by molecular diffusion and convection. [4]

  3. List of unsolved problems in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    This is a list of unsolved problems in chemistry. Problems in chemistry are considered unsolved when an expert in the field considers it unsolved or when several experts in the field disagree about a solution to a problem.

  4. Dispersion (materials science) - Wikipedia

    en.wikipedia.org/wiki/Dispersion_(materials_science)

    In materials science, dispersion is the fraction of atoms of a material exposed to the surface. In general, D = N S / N , where D is the dispersion, N S is the number of surface atoms and N T is the total number of atoms of the material. [ 1 ]

  5. Dispersity - Wikipedia

    en.wikipedia.org/wiki/Dispersity

    A uniform polymer (often referred to as a monodisperse polymer) is composed of molecules of the same mass. [5] Nearly all natural polymers are uniform. [6] Synthetic near-uniform polymer chains can be made by processes such as anionic polymerization, a method using an anionic catalyst to produce chains that are similar in length.

  6. Dispersion (optics) - Wikipedia

    en.wikipedia.org/wiki/Dispersion_(optics)

    Dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency. [1] Sometimes the term chromatic dispersion is used to refer to optics specifically, as opposed to wave propagation in general. A medium having this common property may be termed a dispersive medium.

  7. What did Hunter Biden do? Here are the convictions that led ...

    www.aol.com/did-hunter-biden-convictions-led...

    What does it mean to be pardoned by the president? Under Article II, Section 2 of the Constitution , the president "shall have Power to grant Reprieves and Pardons for Offences against the United ...

  8. Dispersion stabilized molecules - Wikipedia

    en.wikipedia.org/wiki/Dispersion_stabilized...

    However, in larger molecules dispersion effects can become significant. Dispersion forces in molecular chemistry are most apparent in molecules with large, bulky functional groups. [1] Dispersion stabilization is often signified by atomic contacts below their van der Waals radii in a molecule's crystal structure.

  9. Muscle cramps are a pain. These expert-approved tips ... - AOL

    www.aol.com/muscle-cramps-pain-expert-approved...

    Muscle cramps could also potentially stem from a nerve problem (such as nerve compression), exercising in the heat, a lack of stretching, muscle fatigue, body stress, medication side effects or ...