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Air pollution is the contamination of air due to the presence of substances called pollutants in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. [1] It is also the contamination of the indoor or outdoor environment either by chemical, physical, or biological agents ...
Air pressure actually decreases exponentially with altitude, dropping by half every 5.6 km (18,000 ft) or by a factor of 1/e (0.368) every 7.64 km (25,100 ft), (this is called the scale height) -- for altitudes out to around 70 km (43 mi; 230,000 ft). However, the atmosphere is more accurately modeled with a customized equation for each layer ...
The 2018 version of the WHO database contains results of ambient (outdoor) air pollution monitoring from almost 2700 towns and cities in 91 countries. Air quality in the database is represented by the annual mean concentration of particulate matter (PM10 and PM2.5, i.e. particles smaller than 10 or 2.5 micrometers, respectively).
Pocong ( Indonesian pronunciation: [pɔ't͡ʃɔŋ] poh-chong; from Javanese: ꦥꦺꦴꦕꦺꦴꦁ, romanized: pocong, lit. 'wrapped-in-shroud') is a ghost that looked like person who is wrapped in a funeral cloth. [1] In Islamic funeral, a shroud called a " kain kafan " (in Indonesian and Malays) used to wrap the body of the dead person.
The five most abundant greenhouse gases in Earth's atmosphere, listed in decreasing order of average global mole fraction, are: [5] [6] water vapor, carbon dioxide, methane, nitrous oxide, ozone. Other greenhouse gases of concern include chlorofluorocarbons (CFCs and HCFCs ), hydrofluorocarbons (HFCs), perfluorocarbons, SF6, and NF3.
The Ring of Fire (also known as the Pacific Ring of Fire, the Rim of Fire, the Girdle of Fire or the Circum-Pacific belt) [note 1] is a tectonic belt of volcanoes and earthquakes. It is about 40,000 km (25,000 mi) long [1] and up to about 500 km (310 mi) wide, [2] and surrounds most of the Pacific Ocean. The Ring of Fire contains between 750 ...
Godai (五大, lit. "five – great, large, physical, form") are the five elements in Japanese Buddhist thought of earth ( chi ), water ( sui ), fire ( ka ), wind ( fu ), and void ( ku ). Its origins are from the Indian Buddhist concept of Mahābhūta, disseminated and influenced by Chinese traditions [1] before being absorbed, influenced, and ...
In hydraulic engineering, air bubble entrainment is defined as the entrapment of air bubbles and pockets that are advected within the turbulent flow. [1] The entrainment of air packets can be localised or continuous along the air–water interface. Examples of localised aeration include air entrainment by plunging water jet and at hydraulic jump.