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  2. Skywave - Wikipedia

    en.wikipedia.org/wiki/Skywave

    The ionosphere is a region of the upper atmosphere, from about 80 km (50 miles) to 1000 km (600 miles) in altitude, where neutral air is ionized by solar photons, solar particles, and cosmic rays. When high-frequency signals enter the ionosphere at a low angle they are bent back towards the Earth by the ionized layer. [ 1 ]

  3. Ionosphere - Wikipedia

    en.wikipedia.org/wiki/Ionosphere

    Relationship of the atmosphere and ionosphere. The ionosphere (/ aɪ ˈ ɒ n ə ˌ s f ɪər /) [1] [2] is the ionized part of the upper atmosphere of Earth, from about 48 km (30 mi) to 965 km (600 mi) above sea level, [3] a region that includes the thermosphere and parts of the mesosphere and exosphere. The ionosphere is ionized by solar ...

  4. Glossary of music terminology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_music_terminology

    Meaning respectively "measured song" or "figured song". Originally used by medieval music theorists, it refers to polyphonic song with exactly measured notes and is used in contrast to cantus planus. [3] [4] capo 1. capo (short for capotasto: "nut") : A key-changing device for stringed instruments (e.g. guitars and banjos)

  5. List of musical symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_musical_symbols

    Musical symbols are marks and symbols in musical notation that indicate various aspects of how a piece of music is to be performed. There are symbols to communicate information about many musical elements, including pitch, duration, dynamics, or articulation of musical notes; tempo, metre, form (e.g., whether sections are repeated), and details about specific playing techniques (e.g., which ...

  6. List of Italian musical terms used in English - Wikipedia

    en.wikipedia.org/wiki/List_of_Italian_musical...

    Piece of music, usually for a singer Aria di sorbetto: sorbet air: A short solo performed by a secondary character in the opera Arietta: little air: A short or light aria Arioso: airy A type of solo opera or operetta Ballabile: danceable (song) to be danced to Battaglia: battle: An instrumental or vocal piece suggesting a battle Bergamasca ...

  7. Skip zone - Wikipedia

    en.wikipedia.org/wiki/Skip_zone

    A skip zone is an annular region between the farthest points at which the ground wave can be received and the nearest point at which the refracted sky waves can be received. Within this region, no signal can be received because, due to the conditions of the local ionosphere, the relevant sky waves are not reflected but penetrate the ionosphere.

  8. Why Does the Sun Shine? (The Sun Is a Mass of Incandescent ...

    en.wikipedia.org/wiki/Why_Does_the_Sun_Shine...

    A music video for the song directed by Maciek Albrecht was shown in an episode of the Nickelodeon television series KaBlam!. In the video, a group of students are listening to a scientist talk about the Sun, which makes its way to them and shines its brightest. [5]

  9. Vevo - Wikipedia

    en.wikipedia.org/wiki/Vevo

    Vevo has stated that it does not have specific policies or a list of words that are forbidden. Some explicit videos are provided with intact versions in addition to the edited version. Some explicit videos are provided with intact versions in addition to the edited version.