1.5 μm Process
1.5 (one and one half, three halves, or sesquialterum) may refer to: *1.5 °C is the preferred limit of global warming signed in the Paris Agreement *''1.5'', an album by Big Data *Superparticular ratio: 3/2 or 1 *Perfect fifth In music theory, a perfect fifth is the Interval (music), musical interval corresponding to a pair of pitch (music), pitches with a frequency ratio of 3:2, or very nearly so. In classical music from Western culture, a fifth is the interval fro ...

Global Warming
In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate variability and change, Climate change in a broader sense also includes previous long-term changes to Earth's climate. The Instrumental temperature record, current rise in global average temperature is more rapid than previous changes, and is Scientific consensus on climate change, primarily caused by humans burning fossil fuels. Fossil fuel use, deforestation, and some Greenhouse gas emissions from agriculture, agricultural and Environmental impact of concrete, industrial practices Greenhouse gas emissions, increase greenhouse gases, notably carbon dioxide and Methane emissions, methane. Greenhouse gases greenhouse effect, absorb some of the heat that the Earth radiates after it warms from sunlight. Larger amounts of these gases Earth's Energy Imbalance, trap more heat in Earth's lower atmosphere, causing glob ...
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Paris Agreement
The Paris Agreement (french: Accord de Paris), often referred to as the Paris Accords or the Paris Climate Accords, is an international treaty on climate change. Adopted in 2015, the agreement covers climate change mitigation, adaptation, and finance. The Paris Agreement was negotiated by 196 parties at the 2015 United Nations Climate Change Conference near Paris, France. As of September 2022, 194 members of the United Nations Framework Convention on Climate Change (UNFCCC) are parties to the agreement. Of the four UNFCCC member states which have not ratified the agreement, the only major emitter is Iran. The United States withdrew from the Agreement in 2020, but rejoined in 2021. The Paris Agreement was opened for signature on 22 April 2016 ( Earth Day) at a ceremony in New York. After the European Union ratified the agreement, sufficient countries had ratified the Agreement responsible for enough of the world's greenhouse gases for the Agreement to enter into force o ...
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Big Data (band)
Big Data is an American electronic music project created by producer Alan Wilkis. Big Data is best known for the single " Dangerous", featuring Joywave, which reached number one on the ''Billboard'' Alternative Songs Alternative Airplay (formerly known as Modern Rock Tracks (1988–2009) and Alternative Songs (2009–2020)) is a music chart in the United States that has appeared in ''Billboard'' magazine since September 10, 1988. It ranks the 40 most-playe ... chart in August 2014, and was certified gold by the RIAA in May 2015. Big Data's first EP, ''1.0'', was released on October 1, 2013, on Wilkis's own Wilcassettes label and features the songs "The Stroke of Return", "Dangerous", "Big Dater", and "Bombs over Brooklyn". In early December 2013, they also released a remix EP, ''1.5'', which included eight remixes of the song "Dangerous", including one by Joywave. Another remix EP, ''1.6'', was released in late September 2014, and included seven remixes of "Dangerous". Big ...
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Superparticular Ratio
In mathematics, a superparticular ratio, also called a superparticular number or epimoric ratio, is the ratio of two consecutive integer numbers. More particularly, the ratio takes the form: :\frac = 1 + \frac where is a positive integer. Thus: Superparticular ratios were written about by Nicomachus in his treatise ''Introduction to Arithmetic''. Although these numbers have applications in modern pure mathematics, the areas of study that most frequently refer to the superparticular ratios by this name are music theory and the history of mathematics. Mathematical properties As Leonhard Euler observed, the superparticular numbers (including also the multiply superparticular ratios, numbers formed by adding an integer other than one to a unit fraction) are exactly the rational numbers whose continued fraction terminates after two terms. The numbers whose continued fraction terminates in one term are the integers, while the remaining numbers, with three or more terms in thei ...
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