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New Data on the Sun's Atmosphere

30.10.2014

With the help of IRIS (Interface Region Imaging Spectrograph), scientists have learned that the Sun's corona heats up much more than the surface, causing a constant outflow of particles called the solar wind.
myscienceacademy.org October 23, 12205

The new information will help researchers better understand how a star transfers energy through the atmosphere, as well as monitor dynamic solar activity that can affect technological infrastructure in space and on Earth.

The device revealed zones with a temperature of 93 thousand degrees Celsius lower in the solar atmosphere than ever observed. Scientists have named them "solar thermal bombs" in reference to the amount of energy they release in such a short amount of time. Identifying such sources of unexpected heat could contribute to a better understanding of how the entire solar atmosphere heats up.

IRIS has also detected numerous mini-tornado-like structures. They move at a speed of almost 20 kilometers per second and are scattered throughout the chromosphere - the outer shell of the Sun. These tornadoes provide the energy transfer mechanism to power the corona, and the plasma fountains that shoot out of the coronal holes are obviously the source of the solar wind.

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MusicCast mobile applications for Android and iOS OC allow you to stream music from compatible sources, whether it's a home NAS, PC, Internet radio, to any speaker system, if it includes MusicCast components. New devices are just such components: if the Yamaha WXC-50 can be connected to any amplifier with RCA inputs or optical and coaxial S / PDIF, then the Yamaha WXA-50 is connected directly to the speaker system (there are two pairs of terminals).

New items are enclosed in a metal case and use the ESS Saber DAC, as in the receivers of the Aventage family, digital volume control (48 bit). The level of harmonic distortion in the Yamaha WXC-50 does not exceed 0,003%, the signal-to-noise ratio is 112 dB. In addition to Wi-Fi support, the signal can be received via Ethernet, analog input, USB port and optical S / PDIF, there is an output for an active subwoofer.

The Yamaha WXA-50 amplifier develops up to 70 watts per channel (with two channels, in the range of 20-20000 Hz, THD 0,06% and 6 ohm load) and 55 watts (at 8 ohm load). The signal-to-noise ratio is declared at 110 dB, the set of inputs is the same as the previous model. New items will be on sale by August at a price of $500 for the Yamaha WXA-50 and $350 for the WXC-50.

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