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  2. Beat (acoustics) - Wikipedia

    en.wikipedia.org/wiki/Beat_(acoustics)

    The sound appears to pulsate only when heard through both earphones. Time duration of 10 seconds Binaural Beats Base tone 200 Hz, beat frequency from 7 Hz to 12.9 Hz. Time duration of 9 minutes. "Binaural beats were first discovered by physicist Heinrich Wilhelm Dove in 1839.

  3. Alpha wave - Wikipedia

    en.wikipedia.org/wiki/Alpha_wave

    Currently, there are arguments that alpha patterns are a normal part of REM sleep, and for the notion that it indicates a semi-arousal period. It has been suggested that this alpha activity is inversely related to REM sleep pressure. [citation needed] It has long been believed that alpha waves indicate a wakeful period during sleep.

  4. Binaural recording - Wikipedia

    en.wikipedia.org/wiki/Binaural_recording

    Binaural recording is a method of recording sound that uses two microphones, arranged with the intent to create a 3D stereo sound sensation for the listener of actually being in the room with the performers or instruments.

  5. Binaural beats - Wikipedia

    en.wikipedia.org/?title=Binaural_beats&redirect=no

    Beat (acoustics)#Binaural beats To a section : This is a redirect from a topic that does not have its own page to a section of a page on the subject. For redirects to embedded anchors on a page, use {{ R to anchor }} instead .

  6. Franssen effect - Wikipedia

    en.wikipedia.org/wiki/Franssen_effect

    The Franssen effect is an auditory illusion where the listener incorrectly localizes a sound. It was found in 1960 by Nico Valentinus Franssen (1926–1979), a Dutch physicist and inventor.

  7. AZD1305 - Wikipedia

    en.wikipedia.org/wiki/AZD1305

    AZD1305 blockade of the INalate modulates IKr-blockade induced APD instability, repolarization vulnerability, and variability in beat-to-beat APD. [ 4 ] [ 5 ] In vivo , as well as in vitro studies discovered that inhibition of INa and IKr by AZD1305 is much greater in atrial versus ventricular myocytes.

  8. Cymatics - Wikipedia

    en.wikipedia.org/wiki/Cymatics

    Resonance made visible with black seeds on a harpsichord soundboard Cornstarch and water solution under the influence of sine wave vibration A demonstration of sand forming cymatic patterns on a metal plate.

  9. List of chemistry mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_chemistry_mnemonics

    A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.