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Halocarbon compounds are chemical compounds in which one or more carbon atoms are linked by covalent bonds with one or more halogen atoms (fluorine, chlorine, bromine or iodine – group 17) resulting in the formation of organofluorine compounds, organochlorine compounds, organobromine compounds, and organoiodine compounds.
The ideal gas model has been explored in both the Newtonian dynamics (as in "kinetic theory") and in quantum mechanics (as a "gas in a box"). The ideal gas model has also been used to model the behavior of electrons in a metal (in the Drude model and the free electron model), and it is one of the most important models in statistical mechanics.
A sky lantern. A precursor of the hot air balloon was the sky lantern (simplified Chinese: 孔明灯; traditional Chinese: 孔明燈). Zhuge Liang of the Shu Han kingdom, during the Three Kingdoms era (220–280 CE), used these airborne lanterns for military signaling. [3]
Mohammad Shams Aalam Shaikh (born 17 July 1986) is an Indian Para swimmer. He is currently ranked number 1 by the World Para Swimming (WPS) in men's 100 m butterfly (S5 category) and men's 50 m breaststroke (SB4 category) as on 2 February 2024. [1] On 10 November 2024, he set a world record for longest open water swimming. [2] [3]