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The mirror is carefully polarized to allow an image to transfer through the mirror, such that when the TV is off, the device looks like a mirror. [2] [3] Placement of a mirror TV is important to ensure both good mirror reflection and television picture quality. A space with high levels of lighting is optimal for reflection when the TV looks ...
Despite their relative rarity, the damage caused by EF5 tornadoes represents a disproportionate hazard to life and limb; since 1950 in the United States, only 59 tornadoes (0.1% of all reports) have been designated F5 or EF5, and yet these have been responsible for more than 1300 deaths and 14,000 injuries (21.5 and 13.6%, respectively).
There is a large difference in frame rate between film (24.0 frames per second) and NTSC (approximately 29.97 frames per second). Unlike the two other most common video formats , PAL and SECAM , this difference cannot be overcome by a simple speed-up , because the required 25% speed-up would be clearly noticeable.
An EF5 rating on the new scale requires a higher standard of construction in houses than does an F5 rating on the old scale. So, the complete destruction and sweeping away of a typical American frame home, which would likely be rated F5 on the Fujita scale, would probably be rated EF4 or lower. [51]
One-way glass (4) used in a teleprompter. A one-way mirror is typically used as an apparently normal mirror in a brightly lit room, with a much darker room on the other side. People on the brightly lit side see their own reflection—it looks like a normal mirror. People on the dark side see through it—it looks like a transparent window. The ...
The Fujita scale was applied retroactively to tornadoes reported between 1950 and the adoption of the scale in the National Oceanic and Atmospheric Administration (NOAA) National Tornado Database. Fujita rated tornadoes from 1916 to 1992 [ 4 ] [ 5 ] and Tom Grazulis of The Tornado Project retroactively rated all known significant tornadoes (F2 ...
F4 tornadoes were estimated to have had maximum winds between 207 mph (333 km/h) and 260 mph (420 km/h) and are considered violent tornadoes, along with F5 tornadoes. [ 3 ] [ nb 1 ] Following two particularly devastating tornadoes in 1997 and 1999, engineers questioned the reliability of the Fujita scale.
Nigeria also has the largest terrestrial television network in Africa which is the Nigerian Television Authority (with over 96 stations scattered around the country). [2] As of 2010, 40% of Nigerian population had television in their homes.