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A cathode-ray tube (CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a phosphorescent screen. [2] The images may represent electrical waveforms on an oscilloscope , a frame of video on an analog television set (TV), digital raster graphics on a computer monitor , or ...
Gamma-ray sensors are also used for measuring the fluid levels in water and oil industries. [17] Typically, these use Co-60 or Cs-137 isotopes as the radiation source. In the US, gamma ray detectors are beginning to be used as part of the Container Security Initiative (CSI). These machines are advertised to be able to scan 30 containers per hour.
In the United Kingdom, "Ray of Light" debuted with 76,000 copies and peaked at number two on May 9, 1998, being held off from the number one spot by All Saints's "Under the Bridge / Lady Marmalade", which also debuted the same week with about 31,000 more copies than "Ray of Light.
A generalized first-price auction is a non-truthful auction mechanism for sponsored search (aka position auction). A generalization of both 1st-price and 2nd-price auctions is an auction in which the price is some convex combination of the 1st and 2nd price. [11]
The burqa is worn by women in various countries. Some countries have banned it in government offices, schools, or in public places and streets. There are currently 16 states that have banned the burqa and niqab, both Muslim-majority countries and non-Muslim countries, including Tunisia, [1] Austria, Denmark, France, Belgium, Tajikistan, Uzbekistan, Bulgaria, [2] Cameroon, Chad, the Republic of ...
Events with a duration of less than about two seconds are classified as short gamma-ray bursts. These account for about 30% of gamma-ray bursts, but until 2005, no afterglow had been successfully detected from any short event and little was known about their origins. [67]
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