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  2. Mind machine - Wikipedia

    en.wikipedia.org/wiki/Mind_machine

    A light and sound machine with headphones and strobe light goggles. A mind machine (aka brain machine or light and sound machine) uses pulsing rhythmic sound, flashing light, or a combination of these. Mind machines can induce deep states of relaxation [1] or concentration. [2]

  3. Refraction - Wikipedia

    en.wikipedia.org/wiki/Refraction

    Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction. How much a wave is refracted is determined by the change in wave speed and the initial direction of wave propagation relative to the direction of change in speed.

  4. Reflection (physics) - Wikipedia

    en.wikipedia.org/wiki/Reflection_(physics)

    Reflection of light is either specular (mirror-like) or diffuse (retaining the energy, but losing the image) depending on the nature of the interface.In specular reflection the phase of the reflected waves depends on the choice of the origin of coordinates, but the relative phase between s and p (TE and TM) polarizations is fixed by the properties of the media and of the interface between them.

  5. Sonoluminescence - Wikipedia

    en.wikipedia.org/wiki/Sonoluminescence

    Sonoluminescence is the emission of light from imploding bubbles in a liquid when excited by sound. Sonoluminescence was first discovered in 1934 at the University of Cologne . It occurs when a sound wave of sufficient intensity induces a gaseous cavity within a liquid to collapse quickly, emitting a burst of light.

  6. Fifth grade - Wikipedia

    en.wikipedia.org/wiki/Fifth_grade

    Fifth grade (also 5th Grade or Grade 5) is the fifth or sixth year of formal or compulsory education. In the United States, this is mostly the last grade of primary school, but for some states, it could be the first year of middle school. Primary school generally goes from Kindergarten and ends in fifth or sixth grade. Students in fifth grade ...

  7. Gaetz allegedly flew 2 women to New York, paid them for sex ...

    www.aol.com/gaetz-allegedly-flew-2-women...

    Donald Trump's nominee for attorney general, former Rep. Matt Gaetz, allegedly paid for two women in 2019 to travel to New York to have sex, watch his appearance on Fox News, and attend the ...

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