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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 ]
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 ...
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)
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 ...
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 ...
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.
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]
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