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1 day ago · The prevailing model of atomic structure before Rutherford's experiments was devised by J. J. Thomson. [1]: 123 Thomson had discovered the electron through his work on cathode rays [2] and proposed that they existed within atoms, and an electric current is electrons hopping from one atom to an adjacent one in a series.
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1 day ago · The van der Waals equation, named for its originator, the Dutch physicist Johannes Diderik van der Waals, is an equation of state that extends the ideal gas law to include the non-zero size of gas molecules and the interactions between them (both of which depend on the specific substance). As a result the equation is able to model the liquid ...
1 day ago · The noble gases (historically the inert gases, sometimes referred to as aerogens[ 1 ]) are the members of group 18 of the periodic table: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn) and, in some cases, oganesson (Og). Under standard conditions, the first six of these elements are odorless, colorless, monatomic gases ...
1 day ago · Agni (fire) is a part of major rites-of-passage rituals such as weddings and cremation in Indian religions.. Sanskrit अग्नि continues one of two core terms for fire reconstructed to Proto-Indo-European, *h₁n̥gʷnis, other reflexes of which include Albanian: *Enj-i (), the reconstructed name of the fire god in the Albanian pagan mythology, which continues to be used in the Albanian ...
1 day ago · Ultracold neutrons are produced by inelastic scattering of cold neutrons in substances with a low neutron absorption cross section at a temperature of a few kelvins, such as solid deuterium [135] or superfluid helium. [136] An alternative production method is the mechanical deceleration of cold neutrons exploiting the Doppler shift. [137] [138]
