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So, the resulting output of a tube consists of a continuous Bremsstrahlung spectrum falling off to zero at the tube voltage, plus several spikes at the characteristic lines. The voltages used in diagnostic X-ray tubes range from roughly 20 kV to 150 kV and thus the highest energies of the X-ray photons range from roughly 20 keV to 150 keV.
A factory produces items using three machines—A, B, and C—which account for 20%, 30%, and 50% of its output respectively. Of the items produced by machine A, 5% are defective; similarly, 3% of machine B's items and 1% of machine C's are defective.
Oxfam found that in 2023 the wealthiest 10% of people were responsible for 50% of global emissions, while the bottom 50% were responsible for just 8%. Production of emissions is another way to look at responsibility: under that approach, the top 21 fossil fuel companies would owe cumulative climate reparations of $5.4 trillion over the period ...
The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; the pattern of position detection was found and determined by applying the least-used ratio (1:1:3:1:1) in black ...
Larry Ellison. Lawrence Joseph Ellison (born August 17, 1944) is an American businessman and entrepreneur who cofounded software company Oracle Corporation. He was Oracle's chief executive officer from 1977 to 2014 and is now its chief technology officer and executive chairman.
Mark Cuban (born July 31, 1958) is an American businessman, film producer, investor, and television personality. He is the former principal owner and current minority owner of the Dallas Mavericks of the National Basketball Association (NBA), co-owner of 2929 Entertainment, and one of the main "sharks" on the ABC reality television series Shark Tank.