But the osmium and uranium alloyed with it are something else.
The telephone relay consists of a microphone C, Fig. 25, formed of the two pieces of osmium iridium alloy.
Otherwise, how would he have guessed that the stuff in the sampling chamber was osmium 187?
osmium 187 was stable, but it wasn't a normally used step toward Mercury 203.
The tantalum filament was quickly followed by osmium and by tungsten in this country.
In South America this metal is found native, associated with platinum and osmium.
osmium tetroxide (OsO4) is a very volatile liquid and is used under the name of osmic acid as a stain for sections in microscopy.
The ore of osmium and iridium can be decomposed, and the former recognized by its fetid odor.
He rode with a long train of bubbs and great sheaves of smelted metal rods—tungsten, osmium, uranium 238.
The native alloy of osmium and iridium does not alloy with gold, however, but falls to the bottom of the molten metal.
metallic element, 1803, coined in Modern Latin by its discoverer, English chemist Smithson Tennant (1761-1815) from Greek osme "smell, scent, odor" good or bad (cognate with Latin odor; see odor). So called for the strong smell of its oxide.
osmium os·mi·um (ŏz'mē-əm)
A hard metallic element, found in small amounts in osmiridium and platinum ores. Atomic number 76; atomic weight 190.2; melting point 3,000°C; boiling point 5,000°C; specific gravity 22.57; valence 3, 4, 6, 8.
A hard, brittle, bluish-white metallic element that is the densest naturally occurring element. It is used to make very hard alloys for fountain pen points, electrical contacts, and instrument pivots. Atomic number 76; atomic weight 190.2; melting point 3,000°C; boiling point 5,000°C; specific gravity 22.57; valence 2, 3, 4, 8. See Periodic Table.