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2. Background radiation - Wikipedia

   en.wikipedia.org/wiki/Background_radiation

   Displayed background gamma radiation level is 9.8 μR/h (0.82 mSv/a) This is very close to the world average background radiation of 0.87 mSv/a from cosmic and terrestrial sources. Cloud chambers used by early researchers first detected cosmic rays and other background radiation. They can be used to visualize the background radiation

3. Background music - Wikipedia

   en.wikipedia.org/wiki/Background_music

   Background music (British English: piped music) is a mode of musical performance in which the music is not intended to be a primary focus of potential listeners, but its content, character, and volume level are deliberately chosen to affect behavioral and emotional responses in humans such as concentration, relaxation, distraction, and excitement.

4. Stand Up.BG - Wikipedia

   en.wikipedia.org/wiki/Stand_Up.BG

   Stand Up.BG or Stand Up Bulgaria [1] (Bulgarian: Изправи се.БГ, romanized: Izpravi se.BG) is a Bulgarian non-governmental organization and political party which was founded by Maya Manolova on December 6, 2019.

5. Shein - Wikipedia

   en.wikipedia.org/wiki/Shein

   Shein, originally named ZZKKO, was founded in China in 2008 by entrepreneur and search engine optimization (SEO) marketing specialist Chris Xu (Xu Yangtian). [11] [5] [12] Information on Xu's educational and career background remains elusive as of 2022, with sources conflicting on details of his biography.

6. Cosmic background radiation - Wikipedia

   en.wikipedia.org/wiki/Cosmic_background_radiation

   Cosmic background radiation is electromagnetic radiation that fills all space. The origin of this radiation depends on the region of the spectrum that is observed. One component is the cosmic microwave background .

7. X-ray background - Wikipedia

   en.wikipedia.org/wiki/X-ray_background

   The galactic X-ray background is produced largely by emission from hot gas in the Local Bubble within 100 parsecs of the Sun. Deep surveys with X-ray telescopes, such as the Chandra X-ray Observatory , have demonstrated that around 80% of the cosmic X-ray background is due to resolved extra-galactic X-ray sources, the bulk of which are ...

8. Josh Hawley - Wikipedia

   en.wikipedia.org/wiki/Josh_Hawley

   Joshua David Hawley (born December 31, 1979) is an American politician and lawyer serving as the senior United States senator from Missouri, a seat he has held since 2019.A member of the Republican Party, Hawley served as the 42nd attorney general of Missouri from 2017 to 2019, before defeating two-term incumbent Democratic senator Claire McCaskill in the 2018 election.

9. Single Scope Background Investigation - Wikipedia

   en.wikipedia.org/wiki/Single_Scope_Background...

   A Single Scope Background Investigation (SSBI), now called a Tier 5 (T5) [1] investigation, is a type of United States security clearance investigation. [2] It involves investigators or agents interviewing past employers, coworkers and other individuals associated with the subject of the SSBI.