Search results
Results from the WOW.Com Content Network
Nitrogen gas is an industrial gas produced by the fractional distillation of liquid air, or by mechanical means using gaseous air (pressurised reverse osmosis membrane or pressure swing adsorption). Nitrogen gas generators using membranes or pressure swing adsorption (PSA) are typically more cost and energy efficient than bulk-delivered ...
Drifting smoke particles indicate the movement of the surrounding gas.. Gas is one of the four fundamental states of matter.The others are solid, liquid, and plasma. [1] A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide).
In his 1873 thirteen page article 'Molecules', Maxwell states: "we are told that an 'atom' is a material point, invested and surrounded by 'potential forces' and that when 'flying molecules' strike against a solid body in constant succession it causes what is called pressure of air and other gases."
A space-filling model of the diatomic molecule dinitrogen, N 2. Diatomic molecules (from Greek di- 'two') are molecules composed of only two atoms, of the same or different chemical elements.
Nuclear binding energy, the energy required to split a nucleus of an atom. Nuclear potential energy , the potential energy of the particles inside an atomic nucleus. Nuclear reaction , a process in which nuclei or nuclear particles interact, resulting in products different from the initial ones; see also nuclear fission and nuclear fusion .
Lieutenant Desmond Percival Fitzgerald Uniacke (18 December 1895 – 25 March 1933) was a British World War I flying ace credited with thirteen aerial victories. He was captured after engaging in aerial combat with Hermann Göring , commander of Jasta 27 .
In 2021, the lifetime of airborne singlet oxygen at air/solid interfaces was measured to be 550 microseconds. [15] The higher 1 Σ + g state is moderately short lived. In the gas phase, it relaxes primarily to the ground state triplet with a mean lifetime of 11.8 seconds. [10]
Two very similar expressions for δ 15 N are in wide use in hydrology. [2] Both have the form ‰ (‰ = permil or parts per thousand) where s and a are the relative abundances of 15 N in respectively the sample and the atmosphere.