Search results
Results From The WOW.Com Content Network
Luminous efficacy of radiation measures the fraction of electromagnetic power which is useful for lighting. It is obtained by dividing the luminous flux by the radiant flux. [4] Light wavelengths outside the visible spectrum reduce luminous efficacy, because they contribute to the radiant flux, while the luminous flux of such light is zero ...
In Australia, the lowest grade of gasoline (RON 91) was dyed a light shade of red/orange, but is now the same color as the medium grade (RON 95) and high octane (RON 98), which are dyed yellow. [54] In the U.S., aviation gasoline ( avgas ) is dyed to identify its octane rating and to distinguish it from kerosene-based jet fuel, which is left ...
Despite high levels of government investment, the global economy decreased by 3.4% in 2020 in the midst of the COVID-19 pandemic, [7] an improvement from the World Bank's initial prediction of a 5.2 percent decrease. [8] Cities account for 80% of global GDP, thus they faced the brunt of this decline.
According to a 2007 analysis, Detroit officials note about 65 to 70 percent of homicides in the city were drug related, [203] with the rate of unsolved murders roughly 70%. [166] Although the rate of violent crime dropped 11% in 2008, [204] violent crime in Detroit has not declined as much as the national average from 2007 to 2011. [205]
In 2005, the district-run schools scored an average of 37.4% on math and 35.5% on reading. The city's schools reached their peak scores in 2011 with 59.0% on math and 52.3% on reading. In 2014, the scores dropped significantly to 45.2% on math and 42.0% on reading. [157]
[293] [note 1] [294] In 2020, 58 percent of U.S. voters lived in landslide counties, [295] a decline from 61 percent in 2016. [296] Trump became the 11th incumbent in the country's history, and the first since 1992, to lose a bid for a second term. Biden's 51.3% of the popular vote was the highest for a challenger to an incumbent president ...
Aerial Bridge ca. 1920, as a ferry bridge before conversion to a vertical-lift bridge Duluth Ore Docks and freighters circa 1900–1915. For the first half of the 20th century, Duluth was an industrial port boom town dominated by its several grain elevators, a cement plant, a nail mill, wire mills, and the Duluth Works plant. Handling and ...
The third economic downturn was the depression of the late 1830s to 1843, following the Panic of 1837, when the money supply in the United States contracted by about 34 percent with prices falling by 33 percent. The magnitude of this contraction is matched only by the Great Depression.