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  2. Nuclear transmutation - Wikipedia

    en.wikipedia.org/wiki/Nuclear_transmutation

    The term transmutation dates back to alchemy.Alchemists pursued the philosopher's stone, capable of chrysopoeia – the transformation of base metals into gold. [3] While alchemists often understood chrysopoeia as a metaphor for a mystical or religious process, some practitioners adopted a literal interpretation and tried to make gold through physical experimentation.

  3. History of atomic theory - Wikipedia

    en.wikipedia.org/wiki/History_of_atomic_theory

    The current theoretical model of the atom involves a dense nucleus surrounded by a probabilistic "cloud" of electrons. Atomic theory is the scientific theory that matter is composed of particles called atoms. The definition of the word "atom" has changed over the years in response to scientific discoveries.

  4. Proton-to-electron mass ratio - Wikipedia

    en.wikipedia.org/wiki/Proton-to-electron_mass_ratio

    Astrophysicists have tried to find evidence that μ has changed over the history of the universe. (The same question has also been asked of the fine-structure constant.) One interesting cause of such change would be change over time in the strength of the strong force.

  5. Rotating-wave approximation - Wikipedia

    en.wikipedia.org/wiki/Rotating-wave_approximation

    Suppose the atom experiences an external classical electric field of frequency , given by = +; e.g., a plane wave propagating in space. Then under the dipole approximation the interaction Hamiltonian between the atom and the electric field can be expressed as

  6. Download, install, or uninstall AOL Desktop Gold - AOL Help

    help.aol.com/articles/aol-desktop-downloading...

    Learn how to download and install or uninstall the Desktop Gold software and if your computer meets the system requirements. AOL APP. News / Email / Weather / Video ...

  7. History of the periodic table - Wikipedia

    en.wikipedia.org/wiki/History_of_the_periodic_table

    This is an accepted version of this page This is the latest accepted revision, reviewed on 17 November 2024. Development of the table of chemical elements The American chemist Glenn T. Seaborg —after whom the element seaborgium is named—standing in front of a periodic table, May 19, 1950 Part of a series on the Periodic table Periodic table forms 18-column 32-column Alternative and ...

  8. Colorado star Travis Hunter 'for sure' heading to NFL in 2025

    www.aol.com/sports/colorado-star-travis-hunter...

    Hunter has surpassed the numbers he put up over nine games in his first season at the top level of college football. Hunter arrived at Colorado ahead of the 2023 season from Jackson State when ...

  9. CDC warns of deadly drug 100 times more potent than ... - AOL

    www.aol.com/cdc-warns-deadly-drug-100-093050260.html

    Fentanyl has made headlines for driving overdose deaths, but the Centers for Disease Control and Prevention (CDC) is warning of the rise of an even deadlier drug.. Last year, nearly 70% of all U.S ...