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  2. Stimulated emission - Wikipedia

    en.wikipedia.org/wiki/Stimulated_emission

    Stimulated emission was a theoretical discovery by Albert Einstein within the framework of the old quantum theory, wherein the emission is described in terms of photons that are the quanta of the EM field. [5] [6] Stimulated emission can also occur in classical models, without reference to photons or quantum-mechanics.

  3. Einstein coefficients - Wikipedia

    en.wikipedia.org/wiki/Einstein_coefficients

    Schematic diagram of atomic stimulated emission. Stimulated emission (also known as induced emission) is the process by which an electron is induced to jump from a higher energy level to a lower one by the presence of electromagnetic radiation at (or near) the frequency of the transition. From the thermodynamic viewpoint, this process must be ...

  4. STED microscopy - Wikipedia

    en.wikipedia.org/wiki/STED_microscopy

    Stimulated emission depletion (STED) microscopy is one of the techniques that make up super-resolution microscopy. It creates super-resolution images by the selective deactivation of fluorophores , minimizing the area of illumination at the focal point, and thus enhancing the achievable resolution for a given system. [ 1 ]

  5. Laser - Wikipedia

    en.wikipedia.org/wiki/Laser

    Instead, the release of a photon is triggered by the nearby passage of another photon. This is called stimulated emission. For this process to work, the passing photon must be similar in energy, and thus wavelength, to the one that could be released by the atom or molecule, and the atom or molecule must be in the suitable excited state. [25]: 580

  6. Sound amplification by stimulated emission of radiation

    en.wikipedia.org/wiki/Sound_amplification_by...

    The transformation of the electric potential energy in a vibrational mode of the lattice is remarkably facilitated by the electronic confinement in a double-barrier structure. On this basis, physicists were searching for materials in which stimulated emission rather than spontaneous emission, is the dominant decay process.

  7. What Is Low Testosterone & What Causes It? - AOL

    www.aol.com/low-testosterone-causes-125700734.html

    The process goes like this: The hypothalamus produces and releases gonadotropin-releasing hormone (GnRH). GnRH nudges the pituitary gland to produce luteinizing hormone (LH) and follicle ...

  8. Population inversion - Wikipedia

    en.wikipedia.org/wiki/Population_inversion

    The rate at which stimulated emission occurs is proportional to the number of atoms N 2 in the excited state, and the radiation density of the light. The base probability of a photon causing stimulated emission in a single excited atom was shown by Albert Einstein to be exactly equal to the probability of a photon being absorbed by an atom in ...

  9. How Much THC And CBD Does Your Body Absorb From ... - AOL

    www.aol.com/news/much-thc-cbd-does-body...

    The effectiveness of THC and CBD depends on the method you use to consume them, your body’s make up, and physiological processes. Bioavailability can be influenced by your body’s make up ...