| 释义 |
argon Chem.|ˈɑːgɒn|
[mod.L., f. Gr. ἀργόν, neuter of ἀργός idle, inactive, f. ἀ- priv. + ἔργον work.]
A colourless odourless gas occurring in very small quantity (less than 1 per cent.) in the air, used in ‘gas-filled’ electric light bulbs, etc. Discovered in 1894 and named from its chemical inertness. Symbol Ar, atomic number 18, atomic weight 39·944.
1894Daily News 28 Dec. 3/2. 1895 Ld. Rayleigh & W. Ramsay in Phil. Trans. CLXXXVI. A. 187 Argon, a New Constituent of the Atmosphere. Ibid. 234 The gas deserves the name ‘argon’, for it is a most astonishingly indifferent body, inasmuch as it is unattacked by elements of very opposite character. 1913Bloxam's Chem. (ed. 10) 293. 1958 Engineering 7 Feb. 187/1 It is necessary to melt titanium either in the presence of a suitable inert gas, such as argon, or else in a vacuum. |